|
1
<br /> 1
<br /> Fage
<br />' Once the c,jidlzer reeches 14UCj- F. , the daps r L,ell lsolc-tion Val .z
<br /> begins to open which brings in contaminated ,yir/vapor ml %tore fres,
<br /> the wells tc, the Pr ehea41 eg— o', luizer . If the temperature drC,ps
<br /> below the ,_perazcirire--=et., temperature level , the well isolattic=n
<br /> valve will close and the c _,mbuF5tion chamber will be pLtrgad with
<br /> fresh air throLtgh the d1lUtiOn port .
<br />' The oxidizer burns the vapors as fu_1 in the combustion process at
<br /> the District required temperature, wits, a de=igned vapor residence
<br /> time of 1 se,_,_,nd. The c,4 id 1 z e r I a fuel supply will be a
<br />' ,_CiMb1nation of s1:121 gas vepc,rs e„ tracted through the e` traction
<br /> process and a Supplemental fuel , either naturcl gas or propane.
<br /> Air flowing to the corribusts1=,n chamber passes an orifice plate which
<br />' measures differential pros:-ure. From this the total airflow st a,ny
<br /> one time is calculated and is recorded on the ov idizer ' s strip
<br /> ,_hart recorder for written records. The e,• idiser utilizes a 104
<br /> 11VTA Eclipse burner with an Eclipse NhFS Type pilot . The pilot is
<br /> supplled at all times with a separate ambient air b1c,wer to give
<br /> combLtStion a prE_Eper fuel 'Lc, air ratic,.
<br /> All air flow is monitored for 7. LEL prior to entering the oyidizer
<br /> and the l_,,el 1s maintairetd at a prc_-sc_t level by a contr,i,ller .
<br /> This controllEr mc,duliEktes the dilution port to allow an ai,=,_urate
<br /> I flow of fresh air to maintain `% LEL. of incoming % «pons. 0:;. is also
<br /> MOnit,_,red and r t=___,r dc.d . If thw Om level dr,_,pt� below a pre-set
<br /> point , the s„ -ztEm will _Ic=-e the well isolation val ,.ie .pith the
<br /> I vapors ccimirg from the ,..Eells, and .peo the dslution P---,rt to pLtr we
<br /> the system until the C,ze 1E.al returns tE_, a safe condition.
<br /> WhEn the amount of = 11 Q'cs 5«J DOCS veE_ ,-ecISES tc, Et Point where the
<br /> operation of thio o , idi..er is no longer cost effective at operating
<br /> temperature of 1 , 4,.+i_r- F, an optional catal;tis module can be
<br /> inserted in the of idizer ' s c,=Mbu tion Stzct . This allows Tor Vie
<br /> operating temperature of rhe co,idizer to be decreased from 1 , 400-
<br /> F” to 700- E, thereby ode,=ressing the use of supplemental fuel .
<br /> DperatlOn under this permit will be limited to =rr days within a,ny
<br /> 12 month period, and rrjay not be operated within 1 , 00C) feet of a
<br /> S,_hool ( },-1.- ) under this Perri-,it .
<br /> The concentration of gasoline hydrocarbons in the air stream
<br /> collection system will be m,=,nitC,red at the outlet of the combustion
<br /> exhaust stack with an organic vapor analyzer , or other District
<br /> appro,4ed revise. Feadings will be taxi en at the start up of the
<br /> equipment operation and at regular intervals during the period If
<br /> . operation. The otygEn content at the o, idizer ' s e ,hauSt will be
<br /> measured and recorded at IL-aist once evEry seven operating days.
<br /> IThe FII~EC A T System is a COMF LETELY CLOSED SYSTEM. The only
<br /> emission point is the ,_,_ErrEbusti,iEn ,_har;Eber ' s e ,,hnust Stacl . Sarr,ple
<br /> ports on the e, hcUSt StZ%Ct are E ept closed e,, ,_Ept during s.)mp11rEq.
<br />
|