Water Well Journal
Issue link: http://read.dmtmag.com/i/705618
hypochlorite solution applied during placement of the pack is recommended as a means of disinfection. Water tanks and hoses are also sus- ceptible to fouling. All too often, water or spent fluids remain in the tanks and hoses following completion of work. They return to the shop and sit there, stagnant, until the next time they are needed. Tanks should be flushed, evalu- ated for damage or repairs, disinfected, and allowed to air-dry. Hoses should be flushed of fluids, evaluated for damage or repairs, disinfected, completely drained, and allowed to air-dry. Potable Water You've probably noticed I've used the term "potable water." Potable water, also known as drinking water, is water deemed safe for consumption, including drinking and food preparation. Typi- cally, potable water is referred to as treated water or tap water. Use of potable water in preparation of disinfec- tion solutions or for the washing and cleaning of well components and equip- ment is strongly recommended. The use of treated water allows the disinfection solution of choice to blend better, reduces adverse reactions, and re- mains viable for use against the targeted debris. In using dirty water, oftentimes the chlorine is neutralized during mix- ing, before the first application. Remember, the typical job site is not a sterile environment and we are cer- tainly not working in operating room conditions. However, we need to reduce potential contamination and place ourselves above reproach. With this in mind, these recommendations were developed to help reduce the potential claims of contamination. Technically, we are discussing risk aversion, but in reality we are talking about increasing the professionalism of the industry. By educating ourselves and our customers of the risks and chal- lenges in water well construction, as well as the importance of development and proactive maintenance, we become the leader in the discussion—the groundwater professional. Michael J. Schnieders, PG, PH-GW, is the president and principal hydro- geologist at Water Systems Engineering Inc. in Ottawa, Kansas. He has an extensive background in groundwater geochemistry, geomicrobiology, and water resource investigation and manage- ment. He specializes in the diagnosis and treatment of fouled wells and potable water systems. He can be reached at mschnieders @h2osystems.com. DACUM Codes To help meet your professional needs, this article covers skills and competen- cies found in DACUM charts for drillers and pump installers. DO refers to the drilling chart and PI represents the pumps chart. The letter and number immediately following is the skill on the chart covered by the article. This article covers: DOD-5, DOD-6, DOD-7, DOE-1, DOE-10 More information on DACUM and the charts are available at www.NGWA.org. WWJ Twitter @WaterWellJournl WWJ August 2016 21 TI-5D TITAN DRILLING UNITS 0 '$*+$&"($+. 0/))$!)/)$%!) (!)+$&"!$"#+* 0 &+!")+! !#&$% '+).%! 0))$!)'))$%!)',&+! ')+#&+#,*-!0,%* 0*%!*+.%')$& ,*+)$!*&!+0+.%')$& ,*+)$!*&!+ For more information call: 918 - 266 -7301, or visit taylorindustries.net MEETS CALIFORNIA ANNUAL PURPLE PERMIT REQUIREMENTS