LUCC Meeting Minutes September 5, 2019
Welcome – President Roman Hernandez called the meeting to order and welcomed all attendees.
Self-Introductions – 20 people were present.
Meeting Minutes –Meeting minutes were approved at the opening of the meeting.
Treasurers Report – Naomi Shirtcliff: We reimbursed Roman for travel to the OUCC meeting.
Publicity & Education- Jim Franklin: We are ready to mail out the invitation letters to new prospective Members, asking for them to join us for a lunch meeting. Roman brought pocket guides from 811 that highlight the recent dig law changes.
Damage Report- Jason Williams: Not Present.
Web Page- Amy Abramson: Web page is up to date. When I went to upload last month’s meeting minutes I realized the previous month’s had not saved so they have now been reposted.
OUCC Standards Review – Rocky Stewart: Operators Requesting Design Locates. 952-001-0080 Locators “must” provide locates to the same standards as a typical 48 hour locate. It seems to be a common practice that locators put forth less effort on design locates because the perceived risk to damage is less, given no excavation will take place. However, for the requestor they are just as important, if not more, as a dig ticket because critical design decisions are made based on the locate results. Design errors and revisions can be as financially costly as a damage.
Old Business: We did not end up sponsoring the golf tournament for JC High School. We just didn’t have enough time to put it together. Maybe next year. We need more information gathered to put together a sponsorship for the Timbers Youth Soccer team. The next quarterly OUCC meeting has been canceled. The next meeting will be in Wilsonville in December. Mark Maguire, EWEB Safety, following up in regards to the proposal sent to OUCC back in February for the revision to the standards manual in regards to using Hydro Vac excavation for the purpose of cleaning out water meter and valve boxes. OUCC has agreed that clarification is needed for these scenarios. They are working on new language and expect to have it ready by the end of the year.
New Business: Mark Maguire announced he will be retiring from EWEB at the end of the month. In response to Rocky’s standards review topic, it was mentioned that CTL has not been marking service drops on pre-survey design locates, which has caused issues when it comes time for construction. Lane County has a lawsuit for a coldmix patch “graveling out” in the middle of a crosswalk, causing a tripping hazard. Williams Pipeline is holding a Blood drive Tuesday September 10th, 9am-3pm at their Game Farm Rd location. You can receive a free Pint of beer from Hop Valley Brewing and enter a raffle for an overnight stay from Shilo Inn. There will also be various other raffles and prizes.
Program: Chris Irvin, EWEB Water Senior Engineer – “Risk Management of Aging Water Infrastructure”
EWEB often gets asked the question “How come EWEB didn’t replace that water main before it failed?” The answer is a little complicated. EWEB has over 800 miles of water pipe in the ground. It would cost an estimated 1.5 billion dollars to replace all of it. The majority of the pipe was installed in the 1960’s during the city’s big expansion boom. Approximately ½ of the pipe is made of cast iron material, another 1/3 is ductile iron. We document all of our known leaks, and found that the “leaks over time” average is better than the national average. We also document the types of leaks, in regards to pipe size, material, age and cause of leak. Smaller pipes tend to leak more often but larger pipes are more dramatic and can cause more damage. Our old pipe replacement program was based on a reactive approach to known issues. But this can be tricky because pipe can visually look good but still fail. Age is also not a guaranteed measure. Condition assessments are also done when possible, we recently deployed a smartball technology into our large transmission main that inspected the whole line for possible weak points. Service life analysis have been done by various people, most of our pipe has been give an 80 year useful life span. Studies have also been done to determine if certain materials and year of manufacturing provide shorter useful life span averages. EWEB now uses multiple factors to analyze if a pipe should be replaced, such as risk, cost, and public impact. The Risk Model for example, may determine that a small seep on a 2” water main located on a dead end residential road is lower risk than a small seep on a 12” main located under a major roadway. The low risk leaks will eventually be address but at a lower priority. Risk = Probability of failure X Consequence. The risk factors that are considered are: previous leak counts per mile, material type, diameter, consequences if it fails, road type, location in town, customer density, and pressure zones. Each factor receives a score based risk rating. The ratings are then populated into our GIS modeling. This allows our water engineers to have a quick “first look” to determine priority of critical replacement locations.
Meeting Adjourned- 1:00 pm
Next Meeting Topic: Stephanie Scafa, City of Eugene Public Works – “Preparations for the 2021 Games”