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HomeMy WebLinkAboutSeptic System Site Plan r Septic System Site Plan 1165 Wyndmere Road Orono, MN 55391 to ONO COPY Prepared For: Kea Hong Ue (71 (-A -F , C)M N3 c I W( p Due -T 0 PnVC4 'J�e/fid v A 1 OF �'I i A� S v ► ( a / ORONO COpy Prepared By: Miller's Sewage Treatment Solutions 9075155 Ih Street Kimball, MN 55353 ORONO COPY June 11, 2009 er?If or ORO* �C t bA APPNMW*s* �r�a wrr�t co�ec�tot+��tr� 0=8LR W MA �► w f R 4"WHn"+fit AU"Ok"apk ad amus emu �grY�atad�rtiy uaa o.t �.wt��sa1M� r M S T S 9075 155"'STREET. A DIVISION OF WRM SERVICES INC. KIMBALL,MN 55353 (320)398-2705 June 9,2009 Kea Hong 1165 Wyndmere Road Orono,MN 55391 RE: Septic System Design for 1165 Wyndmere Road,Orono, MN Dear Kea As per your request,an onsite wastewater treatment system has been designed for the referenced property. It is our understanding that your existing system is non-compliant and you wish to upgrade it. The property was evaluated for it potential to support a standard septic system but due to limited space and high seasonal watertable no area could be found to support such a system. Therefore an Other type septic system has been designed in general accordance with Minnesota Rule Chapter 7080. The system will consist of using the existing two 1000 gallon septic tanks(provided they are inspected and found to be complaint), installing a 1300 gallon lift station and installing a 1260 pressure bed. An additional 500 gallon septic tank may be required to meet the city ordinance requirements but because they are existing and they meet the minimum requirements of chapter 7080 they may not require an additional septic tank to be installed. The proposed pressure bed area is to be over excavated to an elevation of 98.0 and filled with 1.2 feet of washed mound sand. The pressure bed is to be constructed on the washed sand. Soil borings were completed on the property and revealed fine sandy loam soil with a seasonal water table at an elevation of 96.2. With the bottom of the proposed pressure bed at an elevation of 99.2 the system will have the required three feet of vertical separation to the seasonal watertable. Because this system is classified as an Other type system semiannual monitoring and flow measurement will be required. For frequencies of the monitoring refer to the monitoring plan attached. Also attached is a mitigation plan. This plan lays out recommendations to follow if the system or a portion of the system fails or does not work properly. If you have any questions regarding the septic design feel free to contact me,I can be reached at 320- 398-2705 Sincerely, Miller's Sewage Treatment Solutions Bernie Miller MPCA Lic.No. 1921 r Monitoring Plan FOR 1165 Wyndmere Road, Orono, Minnesota. PID# 26-118-2341-0010 This is a state requirement for Other type septic systems. The intent of this plan to establish a time table in which critical components of the septic system are monitored for their performance and to assure the local units of Government that the system is working properly. It is the owner's responsibility to contract a licensed septic professional to monitor the system. The contracted inspector will be responsible for delivering the monitoring results to the Local Unit of Government. Semi annually for the first three years of the system: a. Calculate or record flow from water meter or event counter b. Inspect drainfield for ponding c. Inspect and verify pumps, controls, and alarm, are working properly I, (owners name), owner of the above- mentioned property agree to follow this plan and contract a licensed septic professional to monitor and service this system. If the system fails, I agree to correct the problem by applying one or more of the Mitigation recommendations. Signed Date: (Owner) Signed �'n�C,�l���.F/��r/Lts�S lic.# (IV Date: (Inspector) Mitigation Plan FOR 1165 Wyndmere Road, Orono, Minnesota. PID# 26-118-2341-0010 This is a state requirement for all Other type septic systems. The intent of this plan to is to establish procedures for correcting the problem if the system fails. The corrective procedures will likely need to be evaluated at the time of failure due to unforeseen circumstances. Listed below are corrected procedures if the system fails. These recommendations are subject to change due to new technology. Hydraulic Failure a. Install water saving toilets and appliances b. Reduce other excess sources of excess water c. Reduce daily flow d. Reduce amount being dosed e. Incorporate time dosing to dispersal field f. Install Pretreatment Total Failure a. Reconstruct Pressure bed b. Use tanks as holding tanks and have tanks pumped when full I, (owners name), owner of the above- mentioned property agree to follow this plan to mitigate the problem or problems that occur with the system. Signed Date: EXISTING LEGEND DEEP WELL ® denotes well location 9 denotes perc test location \ / 50Q5 denotes soil boring location ( 97*8 ) denotes proposed elev. 97*8 denotes existing elev. denotes surface drainage \ 09 8 22.8' Uj 0 25' � Uj wU- I P2 _ o BENCHMARK:TOP OF BRICK LEDGE APPROXIMATE BED QUANTITIES o J I _o �� AT THE CENTER OF THE DOORS Rock Quantity = 47f yards >- I o SB2 O2-1000 GALLON ELEVATION=100.0 N r- Sand Quantity = 56f yds. LU I I m SEPTIC TANKS a Top Soil Quantity = SALVAGE EX/ST/NG aI *Quan ti ties are approximate w I "' /°' EA and do not include waste 00 l m ) P �/ EXISTING GRAINFIELD AR / o Q- ) \ B1 (o �U 1300 GALLON a ' PUMP TANK I 2 Q 99 / 20' 15' N C �9e NOTES: 1. Avoid compaction of the drainfield area before, during and after 101 \ construction. t APP �0 66� 2. Verify before construction that no wells are within 50 feet �XM 0/� of the proposed or existing septic tank. IMA PROPERTY LINE NOTE: THE PROPOSED DRAINFIELD AREA IS TO BE 3. Verify before construction that no shallow wells are within 100 feet, PROTECTED TO PREVENT UNWANTED DISTURBENCE OR or any deep wells within 50 feet of proposed treatment area. COMPACTION TO THE SOILS. 4. All materials used for construction must meet or exceed the M.P.C.A. Chapter 7080 requirements and local ordinances. 5. Divert surface drainage away or around the septic area. 6. All dimensions, quantities and elevation shown on plan are approximate. MILLER'S SEWAGE TREATMENT SOLUTIONS PROPERTY LOCATION PREPARED FOR: I hereby certify that this site plan was prepared by me or Lot 4, Block 1, Wyndmere, Orono, Septic System site Plan and m direct supervision. A division of WRM Services Inc. Hennepin County, Minnesota. Kea Hong y PO BOX 458 Kimball, MN 55353 PID# 26-118-23-41-0010 DATE JOB NO. SCALE - 7)�& 6/9/09 (320) 398-2705 cell (320) 980-1737 6/9/09 2009-79 1n20 Bernie Miller D.R.P. M. P. C. A. License # 1921 r-------------------------------------------------------------------------------------------I I I . I I I I I I I I I I I I I I I I I I HYDRAULIC PROFILE I I t I I I I I I I I I I I I I I I I 97.6 I 98.8 t I I I I I I I I I I I I I I Aa� PRESSURE BED EXOTM I 1000easnw t�' Une is to be laid to provide drain—bads after pump shuts offI i!�, 3ep�c TatNc m 9akn Sepk Tank I I I I I I 92.81 I I I I I NOTE: THE EXISTING SEPTIC TANKS ARE TO BE INSPECTED I I AND IF THEY ARE FOUND TO BE COMPLIANT THEY MAY BE I I USED. THE CITY MAY REQUIRE THE ADDITION OF A 500 SEPTIC TANK TO MEET CITY ORDINANCES. I I I I I I t I I I I I I t I I I I I NOTE: I Elevations are approximate and may need to be j adjusted in the field. I I I I I L------------------------------------------------------------------------------------------J ------------------------------------------------------------------� I I I 1 � I PRESSURE BED I I I I I I I I I II 1-0 21" 63 ' i I -------- — — I ------- --- ------------------q4l.5' I I U, - _3_.5' I 1.5. ---------- --------- 1 1 --- ----- ---------- � -------------4X---------- I A -------ass---- I 63.8' I I � I 990 I I t I 1 1.5" LATERAL WITH 7/32" PERFS SPACED 3.0' ON CENTER I I I I I I I I I I I I PLAN N TS I I I I I I I I i I I I I I I I I I I 1 I i I i I I i I I I ORIGINAL GRADE TOSOIL FILL 99.8 4 I I I 98.7 I I i THE PIPE I I I WASHED SAND I I 99.2 I 98'0 LBOTTOM OF ROCK I I OVEREXCAVATE BED AND REPLACE WITH WASHED MOUND SAND I I I I I I I I PROFILE N TS L------------------------------------------------------------------� Sub Surface Sewage Treatment System Design Summary Project/Client Name: Kea Hong Address: 1165 Wyndmere Road, Orono, MN 55391 PID#:26-118-23-41-0010 Existing system components: 2-1000+gal septic tank&1266 sf trench. Existing tank may be used if inspected and found to be compliant Number of bedrooms in home:4(design fors because of unfinished basement) Peak Flow: 750 Average flow: 375 Design flow: 750 Designed septic tank size: 2000 gallon with 2 compartments(city ordinance requires 2250 for a five bedroom home may be required to add an additional 500 gallon septic tank) Designed pump tank size: 1250 or 1300 gallon Type of dispersal system: Pressure Bed Dra infield sizing, Soil sizing factor: 1.67 ft2/GPD (1260 ft2 Minimum) Designed drainfield size: 1260ft2(20'x 63') with 6"rock below the pipe Type of distribution: Pressure Laterals: size: 1.5"min. Perforation sizing and spacing: 7/32"spaced Ton center Total number of perforations per design: 98(12.9 ft2/perf) Pump requirements: 55 GPM 14 TDH Dosing: Demand Gallons per dose: 191 (including drain back) Reserve Capacity in pump tank: 93%(700 gallons) Depth and or elevation to periodically saturated soil: 42" (elevation 96.0) Maximum depth of drainfield: elevation 99.0 Percolation rates: Perc#1-14.5 MPI, Perc#2-16 MPI Classification of system designed: Other Flow Measurement: Required, event counter&run time meter or water meter in house 11Page *See attached management plan for maintenance requirements *See attached monitoring& mitigation plan Prepared by: Date dIA110 Z Lic# 1921 Bernie Miller Miller's Sewage Treatment Solutions,A division of WRM services 9075155th Street, Kimball MN 55353 320-398-275 or 320-980-1737 bernie@millerssewage.com 21 Page SOIL PROFILE LOG Client: Hong Date:-6/3/2009 Completed By: MSTS Project/Legal/Address: _1165 Wyndmere Road, Orono Type of Observation: Bucket Auger Vegetation: grass Landscape Position: side slope Observation# 1 Elevation: 99.7 Horizon De th Soil texture Matrix color Redox. Color s or Features 0-6 Fine sandy loam l0yr 2/2 6-9 Fine sandy loam 10yr 3/2 9-12 Fine sandy loam l0yr 4/4 12-42 Loam l0yr 5/4 42-50 Silt loam 2.5y 5/3 1Oyr 6/6+4/2 50-56 Sandy loam 2.5y 5/4 1 Oyr 6/6 56-58 Silt loam 2.5y 5/3 1 Oyr 6/6+4/2 Depth to Restrictive layer: 3.5 ft. (elv:96.2) Depth to standing water table: not encountered Other comments: This area had a perc rate of 16mpi. MSTS Kimball, MN 55353 Phone: (320)398-2705 Fax: (320)398-2075 SOIL PROFILE LOG Client: _Hong Date:-6/3/2009 Completed By: MSTS Project/Legal/Address: _1165 Wyndmere Road, Orono Type of Observation: Bucket Auger Vegetation: grass Landscape Position: side slope Observation#2 Elevation: 99.5 Horizon De th Soil texture Matrix color Redox. Colors or Features 0-10 Fine sandy loam l0yr 2/2 10-17 Fine sandy loam 10yr 3/2 17-26 Sandy clay loam l0yr 3/4 26-40 Sandy clay loam 10yr 5/4 4048 Silty clay loam 2.5y 5/4 1 Oyr 6/6+4/2 Depth to Restrictive layer: 3.3 ft. (elv.=96.2) Depth to standing water table: not encountered Other comments: This area had a perc rate of 14.5mpi. MSTS Kimball,MN 55353 Phone: (320)398-2705 Fax: (320)398-2075 UNIVERSITY OF MINNESOTA ONSITe SEWAGE TREATMENT PROGRAM Septic System Management Plan for In-Ground Systems The goal of a septic system is to protect human health and the environment by properly treating wastewater before returning it to the environment. Your septic system is designed to kill harmful organisms and remove pollutants before the water is recycled back into our lakes, streams and groundwater. This management plan will identify the operation and maintenance activities necessary to ensure long-term performance of your septic system. Some of these activities must be performed by you, the homeowner. Other tasks must be performed by a licensed septic maintainer or service provider. However,it is YOUR responsibility to make sure all tasks get accomplished in a timely manner. The University of Minnesota's Septic System Owner's Guide contains additional tips and recommendations designed to extend the effective life of your system and save you money over time. Proper septic system design,installation,operation and maintenance means safe and clean water! Property Owner Property Address ' �p Wert K� . ()yeo vt 17 Property ID Q 311OC/O System Designer License# 1J2.) System Installer License# Service Provider/Maintainer Phone Permitting Authority Phone Permit# Date Inspected Keep this Management Plan with your Septic System Owner's Guide. The Septic System Owner's Guide includes a folder to hold maintenance records including pumping, inspection and evaluation reports. Ask your septic professional to also: • Attach permit information, designer drawings and as-builts of your system,if they are available. • Keep copies of all pumping records and other maintenance and repair invoices with this document. • Review this document with your maintenance professional at each visit;discuss any changes in product use or water-use appliances. For a copy of the Septic System Owner's Guide,call 1-800-876-8636 or go to hq:Hshop.extension.umn.edu/ http://septic.umn.edu ONs�re Septic System Management Plan INUNIVERSITY OF MINNESOTA SEWAGE for In-Ground Systems TREATMENT PROGRAM v � Homeowner Management Tasks These operation and maintenance activities are your responsibility. Use the chart on page 6 to track your activities. Identify the service intervals recommended by your system designer and your local government. The tank assessment for your system will be the shortest interval of these three intervals. Your pumper/maintainer will determine if your tank needs to be pumped. System Designer: check every months My tank needs to be checked Local Government: check every months State Requirement. check every 36 months every months Seasonally or several times per year ❑ Leaks. Check(listen,look)for leaks in toilets and dripping faucets. Repair leaks promptly. ❑ Surfacing sewage. Regularly check for wet or spongy soil around your soil treatment area. If surfaced sewage or strong odors are not corrected by pumping the tank or fixing broken caps,call your service professional. Untreated sewage may make humans and animals sick. ❑ Alarms. Alarms signal when there is a problem; contact your maintainer any time the alarm signals. ❑ Lint filter. If you have a lint filter,check for lint buildup and clean when necessary. ❑ Effluent screen. If you have an effluent screen, inspect and clean it twice a year or per manufacturer recommendations. Annually ❑ Water usage rate. A water meter can be used to monitor your average daily water use. Compare your water usage rate to the design flow of your system (listed on the next page). Contact your septic professional if your average daily flow over the course of a month exceeds 70% of the design flow for your system. ❑ Caps. Make sure that all caps and lids are intact and in place. Inspect for damaged caps at least every fall.Fix or replace damaged caps before winter to help prevent freezing issues. ❑ Water conditioning devices. See Page 5 for a list of devices. When possible,program the recharge frequency based on water demand(gallons) rather than time (days). Recharging too frequently may negatively impact your septic system. ❑ Review your water usage rate. Review the Water Use Appliance chart on Page 5. Discuss any major changes with your pumper/maintainer. During each visit by a pumper/maintainer ❑ Ask if your pumper/maintainer is licensed in Minnesota. ❑ Make sure that your pumper/maintainer services the tank through the manhole.(NOT though a 4" or 6"diameter inspection port.) ❑ Ask your pumper/maintainer to accomplish the tasks listed on the Professional Tasks on Page 3. -2 - • ""' Septic System Management Plan ONSITE IN SEWAGE for In-Ground Systems UNIVERSITY OFMINNESOTA TREATMENT PROGRAM v � Professional Management Tasks These are the operation and maintenance activities that a pumper/maintainer performs to help ensure long-term performance of your system. Professionals should refer to the O/M Manual for detailed checklists for tanks,pumps, alarms and other components. Call 800-322-8642 for more details. ❑ Written record provided to homeowner after each visit. Plumbing/Source of Wastewater ❑ Review the Water Use Appliance Chart on Page 5 with homeowner. Discuss any changes in water use and the impact those changes may have on the septic system. ❑ Review water usage rates(if available)with homeowner. Septic Tank/Pump Tanks ❑ Manhole lid. A riser is recommended if the lid is not accessible from the ground surface.Insulate the riser cover for frost protection. ❑ Liquid level. Check to make sure the tank is not leaking.The liquid level should be level with the bottom of the outlet pipe. (If the water level is below the bottom of the outlet pipe, the tank may not be watertight. If the water level is higher than the bottom of the outlet pipe of the tank, the effluent screen may need cleaning,or there may be ponding in the drainfield.) ❑ Inspection pipes.Replace damaged caps. ❑ Baffles. Check to make sure they are in place and attached, and that inlet/outlet baffles are clear of buildup or obstructions. ❑ Effluent screen.Check to make sure it is in place;clean per manufacturer recommendation. ❑ Alarm. Verify that the alarm works. ❑ Scum and sludge.Measure scum and sludge in each tank,pump if needed. Pump ❑ Pump and controls. Check to make sure the pump and controls are operating correctly. ❑ Pump vault. Check to make sure it is in place;clean per manufacturer recommendations. ❑ Alarm.Verify that the alarm works. ❑ Drainback. Check to make sure it is operating properly. ❑ Event counter or run time. Check to see if there is an event counter or run time log for the pump. If there is one, calculate the water usage rate and compare to the anticipated average daily flow listed on Page 4. Soil Treatment Area ❑ Inspection pipes. Check to make sure they are properly capped. Replace caps that are damaged. ❑ Surfacing of effluent. Check for surfaced effluent or other signs of problems. ❑ Gravity trenches. Check the number of gravity trenches with ponded effluent. Identify the percentage of the system in use. Determine if action is needed. All other components—inspect as listed here: -3 - • r'\;\I M\.1111:1\\1 mill\ ONSITE Septic System Management Plan UNIVERSITY OF MINNESOTA SEWAGE for In-Ground Systems TREATMENT PROGRAM Information on Your System ❑ _Cleanout Manhole Ground surface Soil treatment trench s .one Distribution media t _ ..'i { ,+-`'i'fite$'• { BSA _'�' s4.:f ,+-�_•.- Dra�6 Saturated soillbedrock 3.1WswaradwtDbol mn"M Dwelling Ty/p-e- Well Construction Number of bedrooms: J Well depth(ft): �7 5-0 "f'7t• System capacity/design flow(gpd): �SD 7tY Cased well Casing depth: 7 AIL Anticipated average daily flow(gpd): 75'0 ❑ Other(specify): Comments Distance from septic(ft): > In-home business?_What type? Is the well on the design drawing? N Septic Tank ❑ One tank Tank volume: gallons jd Pump Tank(if one) 130gallons Does tank have two compartments? Y © J Effluent Pump type: Two tanks Tank volume:: /vimgallons TDH J� Feet of head )II Tank is constructed of C&vVftk Pump capacity 5'5- GPM ❑ Effluent Screen type: �r Alarm visual audible Soil Treatment Area Trenches: total lineal feet ❑ Gravity distribution '!�- Pressure Number of trenches: at feet each distribution Drainbed size(length x width):03$ ft x �s� ❑ Inspection ports ❑ Cleanouts -4-