HomeMy WebLinkAbout2013-11-19 Planning Board Supplemental Materials (10) SCI I ivan Engineering Group, LLC
Civil Engineers S Land Development ConSUIMMS
Watershed Special Permit Application
120 Campion Road, North Andover
To: North Andover Planning Board
From: Jack Sullivan, P.E.
Date: October 7, 2013
Subj ect: 120 Campion Road-Written Support for Proj ect
Planning Board Members-
The fol lowi ng written summary is prepared on behalf of the owner/applicant, Scott Sigman, in support of
constructi ng a garage extension, a roofed f rout entry, and a smal I driveway extension. This lot was created
prior to 1990(created in 1982). The applicant i s f i I i ng with the North Andover Conservation Commission
concurrently since a portion of the above referenced work fat I s wi thi n 100 feet of a bordering vegetated
wetland. AII the work is outside of400 feet to Lake Cochichewick. Since a portion oftheworkfalIswithin
the 100 foot"Non-Disturbance" watershed boundary a special permit is being sought from the North Andover
PI anni ng Board.
The fol I owi ng items as outlined in the Watershed Special Permit requirements are listed below (responses to
requi red i tems are i n i tal i c);
1. Encouragi ng the most appropri ate use of I and
Thi s si to i s zoned resi denti al and the proposed si to devel opment i tems I i sted above are appropr i ate for
this parcel. The garage extension is located over a previously disturbed area. There i s onl y a slight
i ncrease i n the driveway area to access the additional garage bay.
2. Preventing overcrowding of land
The proposed garage extension is 14' x 24.33' which is mi ni mat. The proposed garage extension
conforms to zoni ng requi rements and i s I ocated at the furthest poi nt possi bl a on thi s property from the
Lake
3. Conservi ng the val ue of I and and bui I di ngs.
The proposed si to devel opment wi I I enhance surroundi ng bui I di ng and I and val ues, whi I e bei ng
aestheti cal I y pl easi ng (see architectural plans for elevation renderi ngs).
4. Lessening congestion of traffic
Thi s proj ect wi I I not i ncrease traffi c congesti on si nce thi s i s a si ngl a fami I y dwel I i ng wi th I i mi ted
trips per day. The number of residents within the household has not changed, therefore the number of
vehicle tr i ps wi th the garage extension wi I I not change with this project.
5. Preventing undue concentration of popul ati on
Thi s proj ect is consistent with surrounding property uses and as such will not have a measurable
impact on population.
22 Mount Vernon Road - Boxford, Massachusetts 01921 - (978) 352-7871-Phone - 978 352-7871 - Fax
6. Providing adequate light and air
There wi I I be no adverse i mpact to current background ai r and I i ght I evel s.
7. Reduci ng the hazards f rom f i re and other danger.
There wi I I be no i ncrease i n hazard I evel s from fi re or other dangers. The proposed structure wi I I be
easi I y accessi bl e to fi re fi ghti ng equi pment and wi I I meet Bui I di ng Code requi rements i n provi di ng
smoke detectors.
8. Assi sti ng i n the economi cad provi si ons of transportati on, water, sewerage, school s, parks, and other publ i c
faci I i ti es.
This project will not impact the above noted public facilities and/or utilities. There will not be a
negati ve i mpact to the economi cs of any pubd i c uti I i ty.
9. Control I i ng the use of bodi es of water, i ncl udi ng watercourses:
Thi s proj ect does not di rectl y abut the Lake and wi I I not have a negati ve i mpact on present uses of the
Lake or tri butari es thereto.
10. Reduci ng the probabi I i ty of I osses resul ti ng f rom f I oods.
Thi s property i s not I ocated wi thi n a desi gnated F I ood PI ai n as shown as the I atest F I RM maps. The
proposed construction will utilize drainage mitigation to col I ect & recharge stormwater runoff back to
the groundwater tabl e. There wi I I be no i ncrease of stormwater runoff from thi s site. There wi I I be no
i ncrease i n fl oodi ng probabi I i ty due to the devel opment of the property.
11. Reserving and increasing the ameni ti es of the Town
This project will increase the amenities of the Town through an improvement to the property and
additional tax revenue due to the new construction assessment.
The PI anni ng Board, i n revi ewi ng thi s appl i cati on, wi I I note that al I threshol d requi rements for granti ng the
Special Permit are met and/or exceeded.
Further written documentati on i s provi ded bed ow (responses to requi red i tems are i n i tad i cs)
1. Written certification by a Registered Professional Engineer, or other scientist educated in and possessing
extensive experience in the science of hydrology and hydrogeodogy, stating that there will not be any
significant degradation of the quad i ty or quantity or water in or enteri ng Lake Cochi chewi ck.
1) No pesticides, fungicides, chemicals, or non-organi c ferti d i zers wi I I be used in lawn care or
maintenance. Presently, there are no I imitations on the type or quantity of ferti I i zers.
2) Siltation controls are proposed at the limit of work during construction and until the site i s fi nal
stabilized by landscaped means to protect the lake and surrounding properties from any potential
runoff impacts.
3) Stormwater mitigation has been provided to account for all impervious areas. Runoff associated with
the i ncreased i mpervi ous surface wi I I be conveyed to a drywel I system to promote groundwater
recharge.
4) The exi sti ng dwel I i ng i s connected to the muni ci pal sewer system; therefore there wi I I be no potenti al
increase in nitrogen I evel s over the existing background I evel s at the property.
5) Thi s si to does not di rectl y abut the I ake. Additi oval I y, natural wooded buffers wi I I be retai ned wi thi n
25 feet of al I wed and resource areas.
6) Careful I y pl anni ng went i nto the garage extensi on to I i mi t si to gradi ng changes and to match the
existing topography. By limiting the grading changes onsite, existing drainage watercourses wi I I
conti nue to function as i n the undeveloped state.
22 Mount Vernon Road - Boxford, Massachusetts 01921 - (978) 352-7871-Phone - 978 352-7871 - Fax
2. Proof that there i s no reasonabl a a1 ternati ve I ocati on outsi de the N on-D i sturbance and/or N on-D i scharge
Buffer Zones, whichever is applicable, for any discharge, structure, or activity, associated with the proposed
use to occur.
Sl nce the exi sti ng 2 car garage i s I ocated al most enti rel y wi thi n the Non-D i sturbance zone and the
addi ti oval garage bay bei ng added i s attached there i s very I i ttl e fl exi bi I i ty i n I ocati ng the thi rd bay
outside the Non-Disturbance Zone. It should be noted that a majority of the garage expansion is
outsi de the Non-D i sturbance Zone
3. Evi deuce of approval by M ass DEP of any i ndustri a1 waste water treatment or disposal system or any waste
water treatment of system 15,000 GPD capacity.
Thi s i tem does not appl y to thi s si te.
4. Evi deuce that a1 I on-si to operati ons i ncl udi ng, but not I i m i ted to, constructi on, water water di sposal,
ferti I i zer appl i cati ons, and septi c systems wi I I not create concentrati ons of N i trogen i n groundwater, greater
than the federal I i mit at the downgradi ent property boundary.
The exi sti ng dwel I i ng i s connected to the muni ci pal sewer system and the deed restri cti on onl y
al I owi ng organi c or sl ow-rel ease nitrogen, phosphorus free produce for ferti I i zer use wi I I i nsure that
background ni trogen I evel s i n the groundwater tabl a wi I I not be i ncreased.
5. Proj ecti ons of downgradi ent concentrati ons of ni trogen, phosphorus, and other rel event chemi cal s at
property boundaries and other I ocati ons deemed pertinent by the SPCA.
There wi I I be no downgradi ent concentrati on of the above referenced chemi cal s as outl i ned i n the
response to I tem 4 above.
I f you shoul d have any questi ons or requi re additi onal i nformati on pl ease feel f ree to contact me.
Very Truly Yours,
Jack Sullivan, P.E.
Attachments(as noted)
Cc: Scott Sigman, Owner
22 Mount Vernon Road - Boxford, Massachusetts 01921 - (978) 352-7871-Phone - 978 352-7871 - Fax