HomeMy WebLinkAbout- Correspondence - 1 PENNI LANE 4/25/2019 North Andover Health Department
Community and Economic Development division
April 24, 2019
James M. Kavanaugh,P.E.
14 Shady Hill Drive
North Reading, MA 01864
Re: 1 Penni Lane (Map 107.D,Lot 0057)
Dear Mr. Kavanaugh:
The proposed wastewater system design plan for the above site dated March 26, 2019 and
received on April 5, 2019 has been reviewed. Unfortunately,the plan cannot be approved until.
the following items are corrected. The specific section in Title 5: 310 CMR 15.000 (310 CMR),
or North Andover(NA)regulation that is not met by this design follows each item where
applicable.
Sheet 1 of 1:
1. On LOCUS PLAN add the nearest existing street(310 CMR 15.220 (4)(t.)).
2. On SOIL ABSORPTION SYSTEM PLAN, SECTION A-A, identify the material after
the note: 9"MIN. (310 CMR 15.255 (3)) and add the words: BACKFILL SHALL BE
PLACED IN LIFTS AND COMPACTED TO PREVENT SETTLING (310 CMR 15.240
(9))•
3. Under Design, change the wording: "Design Flow: 4 Bedrooms @ 440 gpd=440 gpd"to
read: Design Flow: 4 Bedrooms @ 110 gpd/bedroom=440 gpd
4. On PLAN VIEW, add legal boundary information(bearings) of the facility(310 CMR
220 (4)(a.)).
5. On PLAN VIEW, depict the distances from all tanks and soil absorption system areas to
catch basins,property lines, dwellings or other structures (NA 3.21.).
6. On PLAN VIEW, adjust the orientation of the north arrow to match the northerly
direction of the site plan(310 CMR 220 (4)(g.).
7. On PLAN VIEW, clarify how the new building sewer pipe is to be attached to the
existing sewer pipe, or, add a note to the building sewer: Building sewer shall be laid on a
continuous grade and as nearly as possible in a straight line (310 CMR 15.222 (7)).
8. On PLAN VIEW,provide cleanout(s) accessible at the surface of the ground at all
changes in direction or a change in grade of the sewers (310 CMR 15.222 (8)).
Page 1 of 3
North Andover Health Department, Town Hall, 120 Main Street,
North Andover, MA 01.845 Phone: 978.688,9540 Fax: 978.688.9542
9. On 1500 Gal. Septic Tank Design detail, at the end of the words: "...TO PREVENT
UNAUTHORIZED...", add the word: 'ACCESS' (3 10 CMR 15.228 (2)).
10. On 1500 Gal. Septic Tank Design detail, add the words: INLET AND OUTLET TEES
SHALL BE ON THE CENTER LINE OF THE SEPTIC TANK LOCATED DIRECTLY
UNDER THE CLEANOUT MANHOLE (3 10 CMR 15.227 (1)).
11. Provide buoyancy calculations with designs for counterweights for all septic system
components to be placed at or below ground-water table (3 10 CMR 221 (8)).
12. On Distribution Box(6 Hole) detail, at the end of the note: 4"PVC VELOCITY
REDUCING TEE, add the words: MIN. I"ABOVE THE OUTLET INVERT
ELEVATION(3 10 CMR 232 (3)(a)).
13. On Distribution Box (6 Hole) detail, adjust the location of the words; 8"MIN. SUMP"to
graphically align with its dimensional arrows.
14. On Distribution Box(6 Hole) detail, clarify and depict what is being specified for the
velocity reducing tee.
15. On Distribution Box(6 Hole) detail, add the note: INLET TEE SHALL EXTEND I"
ABOVE THE OUTLET INVERT ELEVATION(3 10 CMR 15.232 (3)(a)).
16. Under PUMP SPECIFICATIONS, include the pump performance curves (3 10 CMR 220
(4)(r)).
17. Under PUMP DESIGN, confirm the pump provided can provide flow needed against the
calculated head(3 10 CMR 220 (4)(r)).
18. Under PUMP DESIGN, confirm the volume number: 25 gal. flowback.
19. On 1000 Gal. Pump Chamber Design detail, make the size of crushed stone base similar
to 1500 Gal. Septic Tank Design detail.
20. On PROFILE, adjust graphic locations of letters C,D, E, F and G to match SCHEDULE
OF PIPE INVERTS table.
21. On PROFILE, adjust the graphic locations of the bottom of the septic tank and pump
chamber.
22. On PROFILE, adjust the graphic location of E.S.H.W.T. =93.32 to match vertical scale.
23. On PROFILE and/or on SOIL ABSORPTION SYSTEM PLAN detail, label size of pipe
used for VENT W/FILTER(3 10 CMR 15.241 (a)).
24. On PLAN VIEW and PROFILE, finished grades above elevation 98 do not coincide.
Adjust to make them consistent.
25. On this sheet, add specifications and a detail of the proposed inspection port(3 10 CMR
15.240 (13)).
26. On SOIL ABSORPTION SYSTEM PLAN, add specifications after the words: 4" SCH.
40 PERF. PVC PIPE (3 10 CMR 15.251 (8)).
27. On DEP Form 11: TP-4,Page 5 of 7, in the column: Depth(in.), change the words 8-14
to read: 18-120.
28. On SOIL ABSORPTION SYSTEM PLAN, add a note with leader arrow showing ends of
distribution lines are connected together by un-perforated pipe of the same materials
specified(31.0 CMR 15.251(9)).
29. Under Notes 1 L, last sentence, add the words: INSPECTED AND before the words:
CLEANED PER MAN. SPECS (3 10 CMR 15.227(7)).
Page 2 of 3
North Andover Health Depart meat, Town Ila]], 120 Maim Street,
North Andover, MA 01845 Phone: 978.688.9540 Fax: 978.688.9542
In addition to the above review comments, the following clarifications are suggested to be added
onto the drawings and in the submittal:
1. On LOCUS PLAN, add a north arrow.
2. In Notes, consider adding the following item: ABANDONMENT OF THE EXISTING
SEPTIC SYSTEM SHALL CONFORM TO 310 CMR 15.354. (3 10 CMR 15.354 (a., b.
& c.)).
3. On SOIL ABSORPTION SYSTEM PLAN detail, identify symbol and location of
distribution box and adjust location of leader arrow from the note.
4. Provide the current MA DEP issued Approval Letter for the effluent filter(NA 3.3).
Please feel free to contact the office or Mill River Consulting at 978-282-0014 with any
questions you may have. We look forward to working with you to obtain a wastewater treatment
and dispersal system which will be in compliance with all regulations and assure protection of
public health and the environment of North Andover.
Sincerely,
Brian J. LaGrasse, CENT
Director of Public Health
cc: Francis Boyle
File
Page 3 of 3
North Andover Health Department, Town Hall, 120 Main Street,
North Andover, MA 01845 Phone: 978.688.9540 Fax: 978,688.9542