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8/13/2019 PE APP Atlantic

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D:\Burn\Projects\2479.07\DOCS\SEPTICQUESTIONS\Septicanalysis.docx

460YarmouthRoad,HyannisMA-SepticSystemAnalysisAccordingtotheTitle5InspectiondatedJuly13&14,2006byBortolottiConstruction,therearetwoonsitesepticsystems,oneforthefrontbuildingandonefortherearbuilding. Botharereportedtobeconstructedwith1,000gallonseptictanks,adistributionbox,andOrangebergpipelaidina6deepstonebeddinginafieldconfigurationasfollows:

FrontBuilding:54LFx3ftwidex6in.deepwithasinglepipe. (162sfofleachingarea) RearBuilding:16ftwidex35ftlongx6in.deepwiththreepipes.(560sfofleachingarea)

ExistingSepticSystemLoading

ThesiteismappedasaCarverLoamyCoarseSand(259A,seeattached),whichisasoilwithrapidpermeability. Thesystemsappeartohavebeenbuildbeforethe1978Title5CodesoananalysisofthesystemsunderthecurrentTitle5codeandthe1978Title5Codeisprovidedbelow:AssumingClassIsoilswitha2minuteperinchpercolationrate

FrontBuildingo 1978Code: 1gpd/sfx162sf=162gpdo 2006Code: 0.74gpd/sfx162sf=119gpd

RearBuildingo 1978Code: 1gpd/sfx560sf=560gpdo 2006Code: 0.74gpd/sfx560sf=414gpd

ExistingSewageGenerationEstimate

BasedontheexistingbuildingasbuiltplansentitledBuildingFootprintPlanof460YarmouthRoad,HyannisMassachusetts,02601anddatedMarch6,2008,thefollowingestimateofexistingsewagedischargefordesignpurposesisprovidedbelow:

FrontBuildingo 12ServiceBays@150gpd/bay=1,800gpd(450gpdmin.)o 3,840sfofRetail@50gpd/1000sf=192gpd(200gpdmin.)

RearBuildingo 7ServiceBays@150gpd/bay=1,050gpd(450min.)o 3,473sfofretail@50gpd/1000sf=174gpd(200gpdmin.)

Thereissomedoublecountingintheaboveanalysis(someoftheretailareaisinusebypeopleusingtheservicebayareas),thenumberswouldbereducedbyanapproximatingwhatportionofeachbuildingsbusinessisretail(automobileandpartssales),andwhatportionisserviceoriented. MostDealershipsareservicedriven,thatisthemajorityofthebusinessistheServiceandPartsdepartment.Letsassumethebusinessis60%PartsandServiceand40%SalessowereducetheRetailnumbersto40%ofthedesignflow(assumingtheminimumdesignflowisnotimposed):

2009For this project, I was asked to analyze the existing septic system and proposedupgrades to an Auto Sales facility and make a recommendation on the system.


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FrontBuilding: 1,800gpd(Bays)+192gpdx40%(Retail)=1,877gpd RearBuilding: 1,050gpd(Bays)+174gpdx40%(Retail)=1,120gpd

ProposedSewageGenerationEstimate

Architecturalplanstoscalearerequiredtodeterminetheretailareasandcompletethisanaylsis. Thefollowingestimateofproposedsewagedischargefordesignpurposesisprovidedbelow:

FrontBuildingo 12ServiceBays@150gpd/bay=1,800gpd(450gpdmin.)o xxxsfofRetail@50gpd/1000sf=xxxgpd(200gpdmin.)

RearBuildingo 6ServiceBays@150gpd/bay=900gpd(450min.)o xxxsfofretail@50gpd/1000sf=xxxgpd(200gpdmin.)

Analysis

Itappears

that

there

will

be

no

increase

in

proposed

flows

over

the

existing

use.

However,

it

should

be

notedthattheexistingflowsaregreaterthanthedesignestimateasshownbelow:

FrontBuildingo 162gpd(1978)systemsize,1,877gpddesignflowo 119gpd(2006)systemsize,1,877gpddesignflow

RearBuildingo 560gpd(1978)systemsize,1,120gpddesignflowo 414gpd(2006)systemsize,1,120gpddesignflow

DependingonhowtheBoardofHealthAgentdecidestolookatthis,asystemupgradecouldberequested. TheBoardofHealthhasnotgottenbacktomesowearentsurewhatheislookingfor. Itsoundedlikeheaskedthecontractortohaveanengineerestimatetheexistingsepticsystemdesignforexistingflowsandcomparewiththeproposeddesignflow. IftheBoardofHealthislookingforananalysisorestimateofwhattheexistingsystemcanhandle,therecouldbeissues.FromaTitle5Perspective(IfNewConstructionStandardsareImposed)

InaJune22,2006ZoningReviewletter,AtlanticDesignEngineers(ADE)indicatedthesitelieswithintheWellheadProtectionOverlayDistrict(WP)andGroundwaterProtectionOverlayDistrict(GP)forHyannisaswellasamappedDEPZoneII. Assuch,underTitle5forNewConstruction,thesiteislimitedto440gpdper40,000sf(nitrogenloadingrate)withouttheuseofInnovative/Alternative(I/A)technologies.Also,anyflows2,000gpdandaboverequireanI/Atechnologyregardlessofthe440gpdper40,000sfloadingratelimit. Thesiteis180,178sf,resultinginanallowableflowof1,981gpdfornewconstruction. ItwasalsoindicatedinthesameletterthatwashingofvehiclesisnotallowedwithoutsomeadditionalprovisionsrequiringapprovalbybothMassDEPandtheTown.Ifweassumetheproposeddesignflowsareequaltotheexistingestimatesandourassumptionsarecorrect,thetotalflowforthesiteis1,877gpd(FrontBuilding)+1,120gpd(RearBuilding)=2,997gpd


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totalflow. Asmentionedabove,thetotalallowableflowforthesiteis1,981gpdfornewconstruction.Also,anyflows2,000gpdandoverarerequiredtouseanI/Asystemanddonotgetadditionalnitrogenloadingcredit. Inordertodesignthissystemwiththeassumedflows,agroundwaterdischargepermitwouldlikelyberequired,ortheprojectwouldhavetobedownsized. TheuseofwaterflowmeterdatacouldbeusedtoproveaMaximumDailyFlowlowerthanthe1,981gpdloadinglimitiftheBoardofHealthworkswiththeclient.FromaTitle5Perspective(IfRepairStandardsareImposed)

Thenitrogenloadingrateisonlyimposedonnewconstruction. ShouldtheBoardofHealthrequireasystemupgradebutdoesntconsideritnewconstruction,theloadingrateissuegoesaway. Thisisthemostlikelyscenario. However,withthesitebeinginsideTownwaterprotectionoverlaydistricts,itisalsolikelytheBoardofHealthwouldrequireanadvancednitrogenremovingsysteminstalledunderaGeneralPermitApproval(localapproval,notMassDEP). Basedontheassumedflows,asystemcouldbesizedapproximatelyasfollows:

2,997gpd(bothbuildings).74gpd/sf=4,050sf Using6deepfield,an81ftx50ftwouldberequired.Withventing,thismaybeallowedunder

pavementsurfaces. Existing1,000septictankswouldbereplacedwithasingle10,000gallontank(3xdailyflow) Apumpchamberwithduplexpumpsandcontrolswouldberequiredtopressuredosethefield

sinceitisover2,000gpd. AnI/AsystemsuchasAdvantex,MicroFast,Bioclere,etc.wouldlikelyberequired. Depending

onthechoiceofsystem,thismaybeabovegradeorbelowgrade.


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Isuggested

movingthe

proposedseptic

locationdueto

utilitylinesfound

intheproposed

location.


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DESIGN ENGINEERS, LLC. ENGINEERS & ENVIRONMENTAL SCIENTISTS

D:\Burn\Projects\2477.04\DOCS\Field report 11-11-09.doc

Page 1 of 1FIELD INSPECTION REPORT

TO: Rich Tabaczynski DATE:11/11/09 JOB NO:2477.04

CC: Bruce Durkee, George McCarron PROJECT NAME: Parking Lot Expansion

PRESENT AT SITE: LOCATION: 251 Locke Drive Marlborough

Scott Schluter ADE CONTRACTOR:

Excavator Operator OWNER:

Compactor Operator WEATHER: overcast TEMP: 40s

The following was noted:

Preparation for final excavations ongoing in area of retaining wall and parking lot expansion in the front of the site.

Excavation and compaction for the eastern corner of the site was ongoing. The foundation base for the retaining wall in this

corner was also underway. Additional fill for the rear parking lot expansion was in place. Pipes and fittings for the front

detention area were onsite. Earth was being removed from the front area of the site and being placed in the eastern corner

of the site and then it was being compacted. It should be noted that in the eastern corner of the site where the bottom of the

retaining wall will be, there was standing water. The contractor said he found soft ground and over excavated to compact

backfill this area and water came into the excavation overnight.

Follow up activities required:

Additional fieldwork was requested as follows:

Layout the new parking islands.

Layout retaining wall bottom location and elevations where we can get to.

Check benchmark at rear of site on generator pad, appears to be a few feet off.

Inspection By:

Scott Schluter November 11, 2009

Date

2009

My work on this project involved construction inspections andassisting the contractor with some field modifications to thedrainage systems and parking layout.


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This is one of

the field

modifications tothe drainagesystem.


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PineValleyMobileHomeParkSepticSystemReviewbyScottSchluter Groundwaterelevationisindicatedat959.50thoughitappearstobe958.2makingthemound

~1.3feethigherthanitmayneedtobe.

Thedesignisfor33mobilehomes,only28areshowntoconnect. Thelateralsizechosenis11/2,designcoulduse11/4. Pods14areendmanifolddesign,whilepod5iscentermanifold. Canbedone,butcouldbe

rezonedto5centermanifoldzones.

Themanifoldsizeisoff,theyarelongerthanthemaximumlengthforthedesigneddiameter,4diameterisneededforwhatisshown.

Thedosingpumpswouldoperatehigherthanindicated. Design:[email protected]:[email protected]

Thenumberofpumpscouldbereducedto2byusingactuatorvalves. Nogroundwatermoundingcalculations? Thedosevolumeis380.6gallons. One6manholehasthevolumeinthedesign,whatisthe

purposeof

the

second

manhole.

In

fact,

it

alters

the

dose

volume

to

twice

the

design.

DotheInfiltratorsstilluseloadingforTitle5systemsfordesign? Design:0.74gpd/sf. Allowed:3gpd/sf(notsureonthis,Infiltratorpeoplecouldanswer).

Istheimperviousbarrierneeded? Youcangradeelevation965.5(topofchambersasdesigned)at15fromthesystemthen3:1downtoexistinggrade.

Theequalizationtankisoversized. Design:15,000gallonspumpand10,000gallonseptic.Allowed:5,000gallons.

ThesetbackdistancesappeartobebasedonTitle5. GWDPregulationshavesomedifferentsetbackdistances. Bigonesarepublicwatersupplysetbackswhicharenotmetinthedesign.

Minoronescanbeadjustedliketheseptictankcanbemoved5feettomeetpropertyline

setbacks.

Allpipeswithin10feetofanybuildingaresubjecttotheMassStatePlumbingCodewhichrequiresinstallationbyalicensedplumber. Afewplacesitcannotbeavoided,oneSMHcanbe

movedslightlytomeetthe10setback.

Moregradinginformationisneededovertheleachingarea. Itdoesnotappeartomeetcoverandminimumsloperequirementsandthereisntenoughinformationforthecontractorto

constructiteasily.

Theprofileinthedosingareadoesntappeartowork,theinvertsneedtoberevised. Also,Title5requiresseptictankoutletstobe1abovegroundwaterelevation;thisisnotmetatthe

10,000gallon

tank.

Moredetailisneededontheprofile,rimsandinvertsandsomeofwhatisdrawndoesnotmatchthedesign.

Imperviousbarrierdesignisoff. Thebarriershouldgofromtopofchamberto12belowexistinggrade.

2009I was given a set of plans and comment letter from MassDEP for a groundwaterdischarge permit for a mobile home park. I was asked to review the plans,calculations and the comment letter. These are my notes from my review.


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Theoverdig areaappearstobeoff. Coarsesandwasthematerialpercolated. Thisisapproximately4down. Anythingabovethismaterialshouldberemovedunlesstheupper

materialisalso2mpi. MassDEPmayallowthedesignasshown,isthereabackstory?

Needa10,000gallontankdetail. Needacombinedsewertrenchdetail(FMandgravityinthesametrench). Theinteriorbottomsofthepumpchambersshouldbeslopedtowardsthepumps. (Thismay

serveasantifloatationweight.) Shouldnotethatantifloatationwillonlyworkwhenthetanks

arebackfilledforthosethatutilizesoilascounterweight.

Needavalvepitdetail. Isthereaweephole? Whyisaportablepumpconnectionrequired? Noemergencyprovisions? Canbesimplifiedif

required.

Iftwopumpchambersarestillrequired,thereshouldbeasump. Connectingpipecanbebelowthepumpoffelevation.

Nolegendontheplans.

Are

the

utility

poles

private?

If

not,

are

we

allowed

to

mount

control

panels

on

them?

Itappearsthereneedstobesomedrainageprovisionsneartheexistingpostofficebuilding.Swale?


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PineValleyMobileHomeParkSepticSystemRevisionsbyScottSchluter Thepressuredosedsystemlateralssizeswerereducedfrom11/2to11/4. Leachingzoneswereredesignedtocentermanifoldfed. Thedosingpumpsystemwasredesignedfromaquintuplexsystemtoaduplexsystemusing

electronicactuated

valves

to

direct

flows

to

the

appropriate

leaching

area

zone.

As

aresult

of

theleachingarearevisions,smallerpumpswereselected.

Theleachingareamoundgradingwasrevisedtoeliminatetheneedforanimperviousbarrier. Someofthegravitysewerlineswereshiftedtoprovide10separationfromexistingmobile

homesasrequiredbytheMassStatePlumbingCode.

Moredetailwasaddedtothesystemprofiletomakeitclearerforconstruction. Additionalmaterialremovalisproposed. TheAandBsoilhorizonsshouldberemovedto

provideadequatepercolationthroughthesubsoil.

Someadditionaldetailswereaddedforclarity. Including,butnotlimitedto:o Sewerconnectiono Valvevaulto Actuatorvalveso Combinedtrench

Variousdetailswererevisedtoclarifyconstruction. Notesanddetailsindicatingthattheinteriorbottomsofthepumpchambersshouldbesloped

towardsthepumpswereadded.

Additionalnotesthattheantifloatationwillonlyworkwhenthetanksarebackfilledforthosethatutilizesoilascounterweightwasadded.

Additionalnoteswereaddedexplainingtheoperationofthesystem.

Upon review, these were the revisions I made to the design

based on my review and the MassDEP comment letter.


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FIRSTA

VENUE

DUBLINROAD

POD

5

POD

4

POD

3

POD

1

POD

2

ss

owste

revisedplans.

Mostofthe

changeswereto

thegrading,

layout,andpump

configuration.


11/15

PlantListForClusterandScatteredPlantings

(2-3gallonplantings)

ScientificName

C

ommonName

Vacciniuma

ngustifolium

LowbushBlueberry

Vacciniumc

orymbosum

Hig

hbushBlueberry

Cornusflorida

Flo

weringDogwood

Ilexopaca

AmericanHolly

Kalmialatifolia

M

ountainLaurel

Viburnumc

assinoides

WitherodViburnum

VariousSpecies

Ferns

Vacciniums

p.

Huckleberry

Ilexverticillata

Winterberry

Clethraalnifolia

Sw

eetPepperBush

Buddleiadavidii

ButterflyBush

Spiraealatifolia

Broad-L

eavedMeadowsweet

2009

IsubmittedthisplanforaNotice

ofIntentforthisresid

entialproject.

Itinvolvedvistapruin

gand

landscapemitigation

inthebuffer

areatooffsetproposed

improvementstothe

decksonthe

rearofthehouse.


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D:\Burn\Projects\2651.00\DOC\2651-city visit memo-10-27-09.docx

Atlantic Design

MemoTo: Rich Tabaczynski

From: Scott Schluter

CC:

Date: 9/4/2012

Re: 2651-Simonds

On October 27, 2009, I visited the City of Fitchburg Conservation Commission (Michael OHara), theBoard of Health (Steve Curry), the Engineering Department (Gary Bevilacqua), the Water Department(Dave Berger), and the Assessors office. I also visited the project site. Below is a summary of theinformation that I obtained.

Conservation Commission

I obtained the Wetlands Protection Ordinance Rules and Regulations. There were no recent plans available for this site. There was a fuel leak Michael remembered and he produced a report by Golder Associates

Semi Annual Monitoring Forge Shop Release MassDEP RTN 2-13597 #155-404 for a Tier1C W023657.

Michael suggested I go to the Board of Health to see if there was a site assignment for thislocus. Meetings are last Tuesday of the month. Submissions are due 2 weeks prior, this includes the

Town department review. Michael thought that the 125 permanent easement on the Nashua River may be an Army

Corps of Engineers easement from when the Bemis Road bridge and dam was washed out.

Board of Health

There is a site assignment for the locus. In the file there is an Actiivity and Use Limitation filed November 2007. Recorded Book 7005

and Page 250 and Book 7005 and Page 257.

Engineering Department

Gary gave me several plans showing utilities around the site. Infiltration is very important to them for drainage prior to connecting to city drainage. Sewer fees are based on water consumption so if there are losses due to processes they may

want to install a meter instead. Gary is tracking down the information on the 30-foot wide easement over the sewer and drain. Unitel is the contact point for gas and electric utilities.

2009This project involved the site design and permitting for a

Bio Fuel facility in Fitchburg within an existingmanufacturing facility parking lot. This is a researchmemorandum after I visited various City departments.


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D:\Burn\Projects\2651.00\DOC\2651-city visit memo-10-27-09.docx

Tom Szocik would have any plans for the access road. Tom was out sick Tuesday. Gary indicated there were no sewer or drain issues in the area. There is a CSO located near the proposed cul-de-sac, CSO 033. The structures to the north

of the property are not a CSO, just close manholes.

Water Department

Dave gave me several plans showing utilities around the site as well as on the site. Fire and domestic services must be separate. Dave gave me a water service fee schedule-

they are VERY HIGH and vary by line size, make sure the appropriate size is chosen! It is important to understand that the property owner will be billed, not a leasor. Dave mentioned a potential desire to loop the water from the proposed access road through

the site up to Intervale Road. He asked if we had any offsite improvement plans. I indicated we didnt then he mentioned a

desire to see a portion of the watermain near Intervale be replaced. Pressure in the area is 95 PSI, if we need to do a hydrant test it is $100, they operate the

hydrants, we perform the test.

Assessors Office

I picked up a request for information form for Abbuter Notification. We do the notifications City does the advertising, the fee is included in the overall fee.

After the City visits, I met with Ken Myer and Charles Reitz of Simonds International. I then did a sitewalk and took pictures. The following is a summary of what I learned.

Ken Myers and Charles Reitz

We can talk with David Witman of Simonds about the Activity and Use Limitation as well as theutility and railroad easements. He can also assist us in the landfill cap area plans.

The landfill cap is a cover of debris from the factory, mostly metal objects. The BioMass plant will get water from one of the onsite wells, mostly likely the one in the

northeastern corner of the site. I took a picture of this well and we have it located on our plans. Discharge from the plant would go through the existing Simonds discharge to the Nashua

River, requiring a modification to their current permit. Simonds will be leasing to the BioMass plant for 20 years, they will buy their electricity from the

plant. Currently they are partners in the project but may not be eventually. There may be an issue with the airport. Gale Associates is working on a proposal to expand

the airport with a new runway that may interfere with constructing smoke stacks in our area.Dan Curley of the Economic Development Commission may be able to answer our questionsabout this impact, it sounds like the airport is being directed to modify their plans since it wouldalso affect the proposed lots off the access drive.

Ken indicated that the driveway would be gravel. Ken indicated that the portion of the site containing the landfill cap will be given to the City of

Fitchburg.

Photos

Photos can be found at "X:\2501 - 3000\2651.00\Photos\10-27-09"


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PRODUCEDBYANAUTODESKEDUCATIONALPRODUCT

PRODUCED

BY

AN

AU

TODESK

EDUCATIONALPRODUCT

PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT

PRODUCED

BY

AN

AUTODESK

EDUC

ATIONALPRODUCT

s

ste

ayoutpan

orteproe

ct.

hadtofitthevariousBioFuelPlan

t

appurtenancesandsafeand

maneuverablevehiclepathswithin

the

confinesoftheleasedarea


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PRODUCED

BY

AN

AU

TODESK

EDUCATIONALPRODUCT

PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT

PRODUCED

BY

AN

AUTODESK

EDUC

ATIONALPRODUCT

Inadditiontovehiclepathsandfa

cility

components,

thenumerousrequired

utilitieshadtobelaidout.Ihadtoavoid

themanyexistingutilitiesalready

onsite

includingsomelargeCityutilities.

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