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r <br />g^ave1. ,. under cEr,+'ln- <br />c� Effective sand size 0.3 to N5 mri:: d. Grc:vel i;°ader aed p. -wood <br />as per Section 7802. e, i.;= :,,:; freaboard above sand <br />f- Si ht glass on waste discharge line. h hgr t•i c release valve; at <br />higlr point of filters ,mho Adequate facilities with dosage control <br />for adding coagulating chemicals ahead of filcero <br />:i- Filter piping valved for seperate filter backwashing sad fil'•r...:<>!a <br />2. SEC. 7803 Diatomaceous L;arth Filter <br />�f a. :Filter rate - two (2) gpm/sq. ft.., maximm of two and ono hal 1` <br />gp: /sq. ft, if eontinotte feeding of filter sic). mnteriay pro -vi i•:::'. fo" , <br />ba Nook 2,000 eqo ft. or more and "Heavily used pools roust have continous <br />feeding of filter aid material at a minimum rate of Ool pound:•/sq. ft. <br />of filter area over a 2h hour period,, Individual skim -filter units <br />not allowed on pools 29000 sqo ft. or mored <br />c. Materials adequate to withstand normal useo <br />da Provision for convenient filter oleaningo <br />eo Pressure-type units pump must deliver full required pressure :nt 60 <br />feet head loss and sixty percent (W,,�) or more of such capacit,; Qt <br />70 feet head losso <br />3o SEC. 7801x-OrM FILTERS (Sufficient factual data shall be submitted to <br />tate Health Department for approval or disepNu-a <br />M. SEC. MAIMING POOL - CAPACITY GALS, <br />1. Maximum depth at deep points, 18" at side walls, 12". <br />2v sinter recirculated at two-hour or less turnover rsteo S -IC.. 7$3L< <br />3. Chlorine residual of at least CA ppm at all t•Sn.as when in use. <br />SEC. 78,12. <br />4, PWn drain for dischssrging pool watar provided. <br />-5), 7797 -WATER SUPPLY <br />1. No direct connection of water systom wlth pool water°o (Ib nose r_illi_ng o <br />direct malx--up rutless protected by vacuum breaker). <br />2. Convenient hose bibs equipped to D.B.7s to enable hosim,, down of prol arta, <br />SEC. 7M. <br />3. �:ater system me -or permtit or from source approved by the rionI h De;:urt;ren;. <br />If water sutr1:1„+1 fzum 1rell9 sanitnry construction n urt- meet Health U.apsrti.renc <br />.approval. <br />li, Guarded jet angle d:rirlan.v fountains provided at all poo3rf except :aierF <br />provided in adjacent living quarters. SEC, 7798. <br />SLC. E.S. -- 9l61 <br />