Document GmDELMn17dZp3q9yLYDxO7B4V

Study Says Pipe Failures Cause for Concern: Break Rates for Almo - South Jersey. News,... Page 1 o f 3 SEAR M O M I MEWS WEATHER S B E S M O W S RADIO PODCASTS ABOUT T4S&y * Hiring s&ies i i ycm m n % %&&&<TV, ^m> ami Digits s'& rim tig w want *&& a * >*? s'il; Stsi Y & &$: Study Says Pipe Failures Cause for Concern: Break Rates for Almost Half of U.S. Water Mains Up More Than 40% in Six Years Information contained on this page is provided by an independent third-party content provider. Frankly and this Site make no warranties or representations in connection therewith, if you are affiliated with this page and would tike it removed SOURCE Utah S tate U niversity LOGAN, Utah, March 6, 201.8 /PRNewsw 0 at tat University's (USU) Buried Structures laboratory has pw&hs - e' - i <1comprehensive study on break rates of the most commonly used w eirf ' > materials titled, "Water Main Break Rates in the USA and Canada: A ,. rt ' t swe Study." The Burled Structures laboratory has a large scale u u u i ' > tv for pipes and underground structures. USU is also home to the Lite.! Wu R * arch laboratory (UWRL), which has been a world leader in enviro tr >i ' rth and water policy for over 50 years, UtVRL is the oldest university . are research feciiity in the U.S. UtahState University D c ' 'U t > > -o -a . . Buried Pipe Design and author of a 2012 USU * * r na> b't , r." j't i - - tsieted a new pipe materials survey in which over 3po i u ire t<up , rec" ><{. ig approximately 200,000 miles of installed w j * r t i j ' i t 20* 4 <n -t - able to get respondents from 48 states in the U s - r * < I f <\u i< - r Canada, representing a 49% increase tn survey ' 'O' 4 0 ' " i " * i< i pipe compared to the 2012 study, increasing its s*'*!-tic^ *, c ry u te tire re ,, ,, pvided data serve a population of over 52 mi peop<- rcprew", r. ' . r, 0f t ^e total population of the U.S. and C 'i'' ' I u c n . \'d ' 803 pipe failures that needed repairs which is a s r i t(<.i s ' I, r e u . < v 'his is one of the largest surveys conducted on Wotei - 1 > r 'd'c " , e , I, give an accurate representation of water pipe c- , i r e u c p t i u i r r i t i* vnerica. The report can assist ih revising pipe s, i n< 1-i > p < h e i ; past. http://www.snjjday.com/story/3765777]/studysays-pipe-failures-cause-for-concem'break". . 3/ 7/2018 Sierra Club v. EPA 18cv3472 NDCA Tier 5 ED 002061 00098101-00001 Study Says Pipe Failures Cause for Concern: Break Rates for Almo - South Jersey, News,,.. Page 2 of 3 Water main break rates are an important calculation to assess pipe performance and durability, and are the most critical metric used in water infrastructure asset management as well as pipe repair and replacement decision-making. "This report provides greater insight into the drivers of the aging water infrastructure crisis and offers data which utilities can use to benchmark pipe material performance. It will be a valuable asset management planning tool for water util Ides," says Dr. Foikman. Overall, break rates have Increased 27% in the past six years. Utilities should be concerned that break rates for cast Iron (Cl) and asbestos cement (AC) pipes, which together represent almost haif of the installed water mains in North America, have increased 46% and 43%, respectively, since 2012. Together, Cl and AC pipes are mostly responsible for the spike in pipe failures. Cl and AC pipes are no longer manufactured and are now reaching the end of their expected lives. The study also discusses how water main failure rates for Cii and AC pipes could increase exponentially over time. "One could envision a rapid increase in break rates In the near future for cast iron and asbestos cement pipes. Utilities across the country would need to rapidly accelerate their pipe replacement schedules to avoid potentially serious economic and social impacts, if a break rate doubles the economic impact is significant: one would need to double the number of personnel repairing failures along with supplies and materials whlie ioss of treated water increases. Societal impacts would be devastating if the break rates reached exponential levels," says Dr. Foikman. A critical new finding is that smaller municipal utilities have twice the water main break rates as larger utilities- "With iess revenues and resources, smaller municipalities will need to use the most cost-effective and durable pipe materials available to address pipe renewal and rehabilitation requirements, larger municipal utilities, however, are not fanng much better, since the rate at which they are replacing the pipes that ere now beyond their useful ilves is inadequate," says Foikman. According to the survey, an average of 0.8% of installed pipe is replaced each year across the country. This equates to a 125-year national pipe replacement schedule. Pipe replacement rates should be between 1% and 1.6%, equivalent to 100-year and 60-year replacement schedules, respectively. In general pipe replacement rates need to increase. A reconfirmed major finding is that polyvinyl chloride (PVC) p<pe has the lowest overall break rate when compared to cast iron, ductile iron, concrete, steel and asbestos cement pipes. PVC was also the pipe material with the lowest break rate in USU's 2012 study. Corrosion can be a major cause of water main breaks with 75% of ail utilities reporting corrosive soil conditions. This study has shown that cast iron pipe in a high corrosion soi I has over 20 times the break rate than one in a low corrosion environment. Similarly, ductile iron pipe in a high corrosion soi! has over 10 times the break rate than one in a low corrosion soil. Other national benchmark findings include: * Nationwide, one mile of installed water main serves 308 people; 85% of water pipes are less than 12 inches in diameter; The percentage of water mains over 50 years old has increased from 22% to 28% in the past six years; * Pipe material usage varies significantly over geographic regions, suggesting pipe selection and use is based on historical preference versus comparative cost analysis or environmental conditions; * Since 2012 the percentage of installed water mains which are beyond their useful lives has doubled from 8% to 16%; * Cast Iron (Cl) pipes represent the largest pipe material inventory and 82% of all Cl pipes are over 50 years old; * Construction-related failures were equivalent for both PVC and ductile iron pipes, pointing to the need to improve construction practices for underground infrastructure regarding installation, location services and inspection; Conservation benchmarks include a national drop in average supply pressure to 69 psi (from 77 psi in 2012), which is well below the maximum operating pressure of water mains, extending pipe life as well as reducing leaks and break; * Average daily gallons per day per person is 37, which suggests successful water conservation efforts across the country; * Estimated average water less due to leakage is 10%, showing that pressure reduction, leak detection and pipe replacement have contributed to reducing water ioss in water distribution systems. To view the report, including the fuM set of key findings and its methodology, click http://www.snjtoday.coin/stoiy/37657771/study-says>pipe''failurescause~for-concem-break-... 3/7/2018 Sierra Club v. EPA 18cv3472 NDCA Tier 5 ED 002061 00098101-00002 Study Says Pipe Failures Cause for Concern: Break Rates for Almo - South Jersey. News. Page 3 of 3 This nv'ip it to the continuing efforts of the EPA`s Aging Wate >1 ; * - <t \'i\' < ' Virginia Tech's Sustainable Water Infra:" jctt < y r <<j<t i. - f ogram, the U.S. Conference of Mayors' W'ate < ,, <.< <. " 't s'jf'nenf and water infrastructure condition asses <f >" t - <` f f A i t i ,-i ` Mter Works Association (AWWA) and Arrter -< v . - " f ' I f - * VSCE), Or. f i > v n n , e , t ,, < -v ' ' 3/ engineer, a member of the American Ware- y - i, o,<,^ a ' i t, a member of the Transportation Research Board < c >>tu <> %<</ i. -> . <itvcture Interaction. He has oversight of USU's tuned structures Laooracory. CONTACT: Justin Finnegan 646-756-37.51 or ifinneaanfaathifteomrn.corn View origin! content with mttitiraedia :http://www.iynewswire.com/newssasgslssuflKasaacgteg^Mass^^ gsui>m a m sth ja s g ciiw ^ @2017 PR Ndivswii-e. AH Rights Reserved. MMI MEWS WEATH1B S E ilS SHOWS fiADJO S M QQMJ-J. A:: c o tte rs S5 C<t0 yfi$01 3000 00 V f FrersKiv te Q fiifi S ttl iic -jtw s y Ai: ;*%:::> :: O' -iC-fv >ri"j:TWi::0 :': cn mo- site r-:W g-w privacy PpP w , Perms t>f Service A S .C M m htp://www.snjtoday.com/story/37657771/study-says-pipe-failures-cause-for-concem"break-... 3/7/2018 Sierra Club v. EPA 18cv3472 NDCA Tier 5 ED 002061 00098101-00003 Sierra Club v. EPA 18cv3472 NDCA Tier 5 ED 002061 00098101-00004