HomeMy WebLinkAbout1986-09-16 Septic System Repair GuidelinesS I [E; ADDRESS ^4// '3 _RAYs•oC __R o_ _ CITY OF ORONO
ON-SITE SEWAGE TRFATi SENT - RLPA I RS OR ADD I T I ONS TO EXISTING SYSTEMS
THE FOLLOWING GUIDELINES SHOULD HELP YOU ..4 PEPAIRING YOURFAILING SEPTIC
SYSTEM:
1.
Sy. -tem is 'ac.C.uty becau5c:
Poor soil conditions
aToo much water use for size of system
a Nigh water table.
Sludge getting into drainfield - tanks need repair/replacement
Other
Lai to
or a combination of the above factors. It is not always possible
to determine the exact zause of system failure, but those listed are
common factors.
2. TanU - City Code %cqu61es 2 .t_:nk-6 in a rovnaL nesid.Jtti.at g4ay.cty-blow system:
1-1000 gat£en, 1-750 gaiton pteca5t concrete tanks .ul aeniee. These ane mi.,tur"m
sizes - you may v. -Wt to .uistaU tanyea tanh.s. IS you have only i .tank, i 42
vonmaf,£y Ptequined to add a second u;:en .tcpa-i-inq a 6ai.Cbtg ayatem. 16 you have
2 ,tanks but they arc substantially utde."ized (500-600 ga toms, bon inatmnce),
it is ncconrnended t;x-t .they be hep&ced. 16 you% ncpaiu w; U ltequiAe a Sump,
it shouid be ptaccd in a thitd tank (500-1000 aatton hccommended).
? System will likely require replacement/adco tior, of 1 or more
tanks:
3. A nate about pumps: Pumps and pump contAot5 have Out 06 necea.6ity become beaten
dcsi.gned and monc databte in the Last 6ecv yeate. Ilea -..Ly one scptic sust:m .in
4ou.t .instat£ed in O.tono makes u5c of a-,.unp, duc to site cendition.,. A pump iray
be needed: - c. -hen baseme,tt 6£oo•t dtaina oot Lowlc st seteea tine atc br-tow the area
to be taed as r'wia t6ietd. - .in att mound ayst►:ms, c.4tich ate used tchcte high kmty,
tabte o,t sto.wty peitcotati.ng 5oits ate Sound.
There ane essentiafty .too typee o6 humps ueed .in septic syst,:ms appt' ati.ons:
I. E6Stuent pumps - pump onto tiqu.ids, nohma.t£y used a6tet the sccc,id septic
tank, oA 6o4 taundty .in the bascment; and
2. G.zinde,t at-sotids-handtij►g puirps, used bort basement to.ctets and sometZmes
in6ta.Ued ,in an outside Lump, Which pump Savage up to septic talks on
high ground.
PuJnp 6aituA Is in the past have bzcrc due mc-stty to au:.i tch 6a tu.tc5 (cmAoai.o►t
04 wM'Lbig out) and etcctz.ic connection contos ia►t. Both o6 these p,tobtems
have becit educed by use 06 coa.tosion-Ae.sirstent Stoat tcci tchcs and connection
boxes. white purr+ 6ad-uwtea arc Ices comme►t than in .the past, a high imte.t
aWm cort,ing appwtimatety $15-$100 is notmat y 4cqui4ed t4te.t a pump i -s ciscd.
It's [relC crortll the JAice i i.t savVs ►(Ou a coe-t.£►r basement c£eanup.
Repairs to system will likely require a pump, including a pump tank
and alarm system.
rase 1 o6 3
;, p�.ei►r;lrfcf - Yrut d,ainrief! cs tt:r erm; ►tent n{ cmut +r; lie systc•rr the eo►tt..aeto,
!tits feast cepitlof ove-I. t:o "unlet hung lea? consttuctC4 :t i.s, it is
uo brefu't th,:rt tyle coif it is 1.1.:ccd i.►t. Fol exampte, ct 1500 squab.• boot dtain-
6ieCd in hravy ctay with high tetter table sutvinq one .zcs.dence marl not teopth as
tec£t as a 400 square 6vot d4ain6ietd in sandrl toct rt tei tit rto aateA .tabte lAobtem.
The scat is vatiabte (thulk.5 to .the gtacZ ,$) ano tnay b;. comptetety di "e:cn.t
►t £oca.t:.ons fess that 100 6ec,t apart. to
The ti►pe o6 %e,,xU is on keptacement, o6 yowl dita6:6.ietd tog.icat y shoutd be based
on the cA-atit ty o6 yowl txvt.ticuean snit type. To do this, it is p.►tude►tt to
have pelteotati.on .tests and soit bo,%ings taken. The "pe,%c" .test is a measwie
06 ;tow but traten wilt move tAtough the so.it. BOAi.ngs Witt indicate the depth
to tvateA table oh seasonatly satuAate.d conditions (indicated by mottled ud and
gray cotou in the soil] and shoutd di.acoven tory ha&dpan oh cfny tayeu tallith
tt:itf impede tva.tcA movement.
® Soil borings/perc tests are required.
❑ Soil borings/perc tests are recorrmended.
❑ Soils borings/perc_ tests have been done previously or are not needed.
Based o►: t1w. ;.utdi,tgs, the peAson doing your testing shoutd design a system boa.
you? pattica&% turten uzeage (based nonnta£to on 150 gat ons put. bed-wom pen day)
,td 6or, yowt pattir_a . site. I.t is not u,tusuat to Sind that you may need a
mowtd-ty;:e system, since tic majotity e6 CRono's 6o,itz wee clayey and have
;:cached saturated cotes ti:Wiin a hew 6ect o6 the swt6ace dwtiutg pa't,t 06 the year.
7hGtch styi terns .irs.ta.tted in these soi,Ls in the past 06ten expe&i.enecd scasonat
6ai.tau. 1locvevcA, in mary places tte►tches stiff can be used cdie)te eonditioms
wte suitabte.
t:Wur:a.tly, the CiiN Inspector tviU rceoame►:d it -hat fie 6ects a•te the Mbt,irzwl
acceptable ncpail:s based on his btetetedge o5 .the site- a►,d situation. IlutveveA,
tltetc is no guarantee that tie %ecernmanded u iU be adequate. Fo.,t
Vii,s treason, a design based on soft testi►:g and you: patticttta t site a,td
testa usage .i..s abnost aLvays r.eco"cndcd.
dumber of Bedrooms in Hcme 1 2 3 4 5 6 7 8 (circle)
❑ Recommended type of drainfield
❑ Standard Trench; square feet minimum
❑ Shallow Trench; square feet mininum
❑ MoundiDimensions:
❑ Othcr
a( 110 Recommendation on system type; you should have soil testing done and have
a system designed by a site evaluator, site conditions are too marginal or
unknown to make a reasonable recor::nendation without testing.
5. 16 the 6aitu4e 06 yowl system is crutsinA It s LIL'ace discharge that is a potcat at
otu.ieance to youh nei.ghbons, you wilt no4r=Urr be •ierjuiAed to have yowl tanks
ptu»ped as 06tert as nc.ccAsalrf to c.timina.te this rUscltan!le, tsart yours system is
hepaited.
rage 7o63