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<br />c;onttol procedures outlined in the ADS Fielcf Safety Manual. However, tMse guideiines <br />wilt not o't-erride local or state traffic control Nyulat1ons. <br /> <br />B. ACW MonitOring <br /> <br />Two (2) temporary flow meters and one (1)' rainfall gaUQe wiI be InstlJlAd and <br />malntainedby ADS for a 56 day period. The data Will be ev-cduate ioffow. Infirtmtlon, <br />and in.sltu capacity. <br /> <br />F!nw Monttortna ECluiDmenj <br /> <br />Gravtty flow rMten; wiD consist of the ADS. m"m~procc3aOr co..tl~ ~Oclty/cJepUI <br />flow meters. Tt~ measurement of V8focIy is achieved using a cigftaJ Doppler veloetlt <br />$eOsor. the most ar.eurate velocity devic;e available, The meuurement of depth is <br />achieved by multiple uttrasonie depth sensors which have a retokItfon to the nearest <br />0.01 foot. <br /> <br />Rajn"'~t Event MonItor!",., <br /> <br />Field per~-c;nnei will InStall approximatety one (1) continuous. ~rding rain gauge <br />capable of mvtlsuring to an accuracy of 0.01 In~,. RainfaI data will be recorded <br />every 1 G minutes. DiStil. from the rain gauges. VriO be used to analyze each ctom1 event <br />and establl$h the hourly inWnsity of ralnfaD and stonn event duration. <br /> <br />Row Meraitorina PeTioq <br /> <br />Wet weather e~rrt.s will be captured lu establistt the rela1lonst:Up between peak intlow <br />and rainfaJllntensity. M such. 1he temporal)' monitoring program Will continue for 3 <br />period of not I~ss thiUI ~ days in order to establish dfscre1e dry and wet wea1her <br />effects. The flow mOfdtClrln~ period may be extended at 1he City's request at the rate <br />provided on Attachment D. <br /> <br />Sitelnvestc:arion:; <br /> <br />Internal inVS$f.:gat!on::; wHI be conduded at each st:!lected monitoring location to <br />determine if the 10000000n is suitable- for ftQw tTlQnilunng. Site Investl~tfons wm <br />determine y.,'here sansors nood to be placed to assure Ule best peSSl~fe flow <br />Quantitication and sensor survivaL Internal investigations will include the Investig::nion <br />of one or more manhoi&i to find hydrc1L:UC conditions amenable to depth and velocity <br />measurements. Im/es:Jga.tion of the manhole upstream and downstream of the <br />Salactr.n monlt:)ring site S oft.n required to m~(O sure the best hydrcwflC cuwJlUons are <br />avaUablp.. F.ach lnvestigation is a confmed sp::lcc manr.ole entry arid crews wiU look for <br />unusual Sift l1eposlts. turbulent or aplashing flow, backwater concfrtions, or other <br />oondftlons fh~t ~irl influence the flow measurement. <br /> <br />Instalialion. ODeratloo ~nc1 M~Inte~ance <br /> <br />G:lrl':': 11..<:\("..c.wr:aC!'~OlO..ooc <br /> <br />6 <br /> <br />Ma!d\Z3. '~I <br />