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HomeMy WebLinkAboutDDW-2025-007379V»oLl£i?efl, BEAR mVER HEALTH DEPARTMENT 655 East 1300 North • Logan, Utah 84321 Phone: 752-3730 "'Cental Pto^* September 2, 19 9 3 Brian House ^ Willard Bay South Marina Water System 900 West 650 North Willard, UT 84340 Re: Sanitary Survey Dear Mx. House: A"".. C't ^^P 08 1393 Enclosed is a copy of the report of survey summarizing the results of the sanitary survey conducted September 1; 1993 on the_Willard Bay South Marina Water System.- I would like to thank you and Noel Larsen for taking the time to show me the system. Please x.aview the report and take the necessary steps to complete the items listed in the Conclusions and Recommendation portion of this report. If I can be of further assistance, of if you have any questions, please contact our office. Sincerely, t/i.iv ^/f Giant W. Koford, M.S. R.S. Division of Environmental Health cc: David F. Hansen, M.S. Division of Drinking Water 817 West 950 South Brigham City, Utah 84302 Phone; 734-0845 125 South First West Tremonton, Utah 84337 Phone:257-3318 Courthouse Randolph, Utah 84064 Phone: 793-2445 REPORT OF SURVEY Bear River Health Department Division of Environmental Health WILLARD BAY SOUTH MARINA WATER SYSTEM On Wednesday, September 1, 1993, a sanitary survey of the culinary water system was conducted by Brian House and Noel Larsen of the Willard Bay South Marina Water System and Grant Koford of Bear River Health Department. The following report describes the physical features of the system and makes conclusions and recommendations regarding deficiencies noted during the survey. General Description Willard Bay South Marina obtains its water from a well located at the Willard Bay South Marina State Park. Chlorination is provided at this same site. There are five spigots and two restroom facilities connected to the system. Well SL Storage Facilities The South Marina well was reported to be approximately 1200 ft. deep with grouting to 100 ft. The well has a natural artisan flow, however, a submersible pump is used that has a capacity of 100 gpm. This well pumps into a wet well {approx. 500 0 gallon) located underneath the pump house. The usual operating season for the well is between April 15 and October 1 each year. During this time period a significant amount of sand is drawn out of the well (approximately 2 ft. of sand has to be shoveled out of the wet well every spring) . It is recommended that a "desander" (bag type filter) be installed next to the well head and serviced on a regular basis to keep sand from collecting in the wet well. At the time of this survey the well was spouting water out of the well head and the entire pump room floor was covered in approximately i inch of water. The well was apparently serviced last year and was not properly sealed when replaced. This leaking seal not only provides for a direct line of contamination into the well but the manhole for the wet well is located inside the pump house and only has a 2 inch raised lip. This lip must be extended to at least 4 inches and the shoebox lid must be equipped with a soft rubber gasket seal. This manhole is another potential route for contamination into the culinary water. Such potential for contamination is in direct violation of the State of Utah Public Drinking Water Regulations and must be corrected within 6 0 days. A follow-up inspection will be conducted at that time. Failure to correct this issue may result in a closure order until corrections are made. Also of concern is the overflow line from the wet well. At the time of this survey the lawn area to the south of the pump house had standing water that was surfacing from the drain line and from runoff out of the pump house. The drain line appears to be covered and plugged. Such lines must be operable, have a 12 to 24 inch freefall at the end, and be screened with a #4 non corrodible mesh screen. The drainage ditch was also full of riparian type vegetation that needs to be removed for effective drainage. This line must also be repaired and operable within 6 0 days and confirmed with a follow-up inspection. From the wet well a Johnson 2 hp pump pumps water into 1000 gallon hydropneumatic tank where the water is pressurized and put into the system. Distribution piping from this pump and tank include a backflow valve and an air relief valve that needs to have a #14 non corrodible mesh screen installed. This pump turns on when pressure in the tank reaches 46 lbs. and off at 52 lbs. A second 7.5 hp Hollow Shaft pump pumps water from the wet well into the irrigation system that serves rain bird sprinklers. The discharge piping from the irrigation-pump has a check valve and an air relief valve that needs a #14 mesh screen installed. A reduced pressure backflow yalve must be installed on this line as required in Chapter 10 of the Utah Plumbing Code. Chlorination Facilities Chlorination is provided at the pump house. A 150 lb. chlorine cylinder with a 200 series chlorinator and Dectecto scales is enclosed in a sealed room that is properly ventilated. The switch for the ventilation system is located inside the pump room door so it can be turned on without opening the chlorine room door. There was a cylinder wrench on the chlorine cylinder although the cylinder was not anchored to the wall. Neither was there any ammonia or a gas mask available. Conclusions and Recommendations 1. The well must be properly sealed so-that water is not spouting out of the well head. This must be corrected within 60 days and confirmed with a follow-up inspection. 2. The end of the overflow/drain line from the wet well and pump house must be located, provided with a 12 to 24 inch freefall and screened with a #4 non corrodible mesh screen. The drainage ditch must also be cleaned to allow proper runoff. These corrections must also be completed within 60 days and confirmed with a follow-up inspection. 3. The wet well manhole needs to be raised to a minimum of 4 inches above the floor and the lid needs to be sealed with a soft rubber gasket. 4. Discharge piping from the irrigation pump must include a reduced pressure backflow valve as stated in Chapter 10 of the Utah Plumbing Code. 5. Discharge piping for the culinary system must include a master meter and a smooth nosed sampling tap. 6. It is strongly suggested that a "desander" (bag type filter) be placed at the well head and serviced on a regular basis to eliminate shoveling sand out of the wet well every year. 7. A gas mask must be available where chlorine gas is handled. It shall be stored at a convenient location, but not inside any room where chlorine gas is used or stored. S. A bottle of ammonia must be available where chlorine gas is handled. 9. All air relief valves must be screened with a #14 non corrodible mesh screen. 10. All chlorine cylinders must be anchored to the .W5il3 •• SURVEY South Marina - Willard Bay State Park May 25, 1986 On May 25, 1986, a survey was conducted of Willard Bay State Park at the South Marina, Survey participants were: Lee Malmberg of the Bear River District Health Department Dave Hansen of the State Health Department, Bureau of Public Water Supplies, and B.J. Florick of the State Park Service. This system consists of a 7 hp John electric motor pump which brings water into a wet well approximately 12' x 12' x 8'. From here the system is divided into two systems, one for culinary use and the other for irrigation purposes. The culinary system for this marina which is used to service four restrooms along with four drinking fountains consists of a 4" well approximately 160 - 200 feet deep. The culinary system is powered by a 2 hp John electric motor which pumps water from the wet well to a 1,000 gallon pressure tank which pressurizes the system to 35r50 psi. The irrigation system serves 1 to 4 rain birds. The system is enclosed by a building built directly over the sump approximately 100' from the building. This system is primarily used during the summer months, and serves several thousand people during the season. There are no concentrated sources of pollution within 100' of the system. CONCLUSIONS AND RECOMMENDATIONS 1. If the overflow line from the wet well is not screened, please do so with No. 4 mesh non-corrodible screen to prevent entrance of vermin. 2. When cleaning the wet well for the summer usage, a solution of chlorine with a strength of at least 5D ppm should be used to disinfect the wails and floor before the system is put into operation. 3. During the non-use period, care should be taken to close all openings into the system. 4. Since-batch chlorination is used in this process, it is recommended that a chlorine test kit be purchased to indicate chlorine residual throughout the system. 3035 bh - 2 - 5, Future development should include a drip chlorinator ana . possible flow meter. 6. When closing the system for the season proper, disinfection is recommended to stop bacteria buildup in the lines.