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Bob VoronyEak: November 19, 1992 A depth Of at least 9 i.r•tcche"�ss of clear, rocj< :l 1/4 inch diarr,eter to 2 1/2 inches in diame::ter, shall be, placed on the siand layer prier to installing the distribution pipe. Pressure Distribution F"ffluerttTs�hal.lWl�eTdis.tributted over the filter material by a 1 1/2 inch diameter perforated pipe t..tnder prt�sssat,Are�„ P,L' ,rfc.iration hol.e�,s sshal.l. be 1/4 inch in diame-ter drilled in as straight l.:ir7e. along tile length of the pipe. i4ole, spacing shta:l.l. be SE inches. holes shall I:ae c:}r•i•lled straight into the: pipe and not at an angle. A sharp drill shall be' uS_set.l and any burrs in the inside or ot-sts:sidc: of the pipe shall be rt-rrecived. The perforated piper laterals shall be installed level with the perfcara-tionss downward. 'The perforated pipe laterals shall be c-onnectet_i to a 2 :irte.ht diauieteyr manifold pipe artc:l shall have their ends capped. 'They laterals:; ':shall be s }:?r c. E—d no fuarther than dso in,=hers on center and no ft..trther than 2.0 inches from the edge of the fiIter rficate•ri4.1 hie ntanifolc;l pipe shall. lae 170nneCte*d to the Supply pipe franT, the- pump. Then manifold shall be sloped toward the pump for complete drain bact� Of of flc.rent. PutrrEp and collection Tank: A�I.►LAmpWshall bey�ussed Tto deliver eaf f:l a.tent to the mound. The I;3t.tml:.► shall be cast ircin or bronze fitted with sstCainles s steel. screws Or c:onstruc•ted of rather s:sound, durable and corrosion -resistant niat-ttrialsa. Locatic-n of pl, mp tank and seh:►ti.} tank Cat) be OptionKal dWL- tC; the use of ra presst,.trized mound. An alarm device ssshal.l be installed to warm of pump failt..tre. The dosing chamber will be sized fi:nr a minimurrr of 2 days of restricted Use dc.re t0 arrrount Of daily use. Pt_trrip Discharge -Fhearpurrip�discharge >=:K-ap�:lrity i s based mtin the perforation spar::ing and perforatie-n diameter. Thiss system has i.nd:i.vidual lateral lengths of 40 -feet; laterals:; will Imes 2 inch plastic: pil:je with 1/4 inch perforations spaced 36---i aches al --)art.. This size will rc:cic.ti.re B [:GPM per 100 s~,t:lt-tare feet Of l�eci. area., A 32 GPM minimum pt-trrip discharge c apac:ity is recaL.tirLd. The Inutmp discharge. head shall be �jt least 5 feet greater than the head re tjt.tired to overcome the pipe friction l.os-; and they elevatican difference between the pt-trrip and till perforated laterals i-af tile pressure distribr..ttion system, which is; miniffIL ) of (sews pump sheet') 2 2- foot head..