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HomeMy WebLinkAboutKNIK VIEW ESTATES BLK 3 LT 28Kni*k View Estates Block 3 Lot 28 #015-043-30 MUNICIPALITY OF ANCHORAGE On -Site Water & Wastewater Program PO Box 196650 4700 Elmore Road Anchorage, Alaska 99519-6650 Phone: (907) 343-7904 Fax: (907) 343-7997 http://www.muni.org/onsite On -Site Wastewater Disposal System Permit Permit Number: OSP251419 Work Type: Septic Upgrade Tax Code Number: 05104330000 Site Legal Address: KNIK VIEW ESTATES BLK 3 LT 28 G:1558 Site Mailing Address: 22723 JUDD DR, Chugiak Owner: JOHNSON MARY SHANTELLE & NATHA Design Engineer: ANTHC This permit is for the construction of: Effective Date Expiration Date: Lot Size in Sq Ft: Total Bedrooms: C,11 )tgmrtnient 4/10/2026 4/10/2027 24188 Non -Public Q Disposal Field Q Septic Tank ❑ Holding Tank ❑ Privy ❑ Water Well ❑ Water Storage All construction shall be in accordance with: 1. The attached approved design. 2. All requirements specified in Anchorage Municipal code Chapters 15.55 and 15.65 and the State of Alaska Wastewater Disposal Regulations (18AAC72) and Drinking Water Regulations (18AAC80) 3. The wastewater code requires inspections during the installation. The engineer shall notify the Development Services Department per AMC 15.65. Coodinate with On -Site staff regarding preferred method. 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather shall be either: a. Opened and Closed on the same day, or b. Covered, sealed, and heated to prevent freezing Issued To: ANTHC Issued By: Curtis Townsend Date: 4/10/2026 Date: 4/10/2026 4 MUNICIPALITY OF ANCHORAGE Development Services Department Phone: 907-343-790-4 On -Site Water & Wastewater Section 4) ON -SITE SEPTIC/WELL PERMIT APPLICATION Parcel I.D. 05104330000 Property owner(s) Mary S. Johnson & Nathaniel J. Johnson Day phone (562) 386-8816 Mailing address PO Box 607626, Chugiak, AK 99567 Site address 22723 Judd Dr., Chugiak, AK 99567 Legal description Knik View Estates BLK 3 LT 28 Number of Bedrooms 4 Engineering Firm Alaska Native Tribal Health Consortium Building Permit Number NA Not Applicable 0 APPLICATION IS FOR: APPLICATION IS AN: 0 all that apply) Disposal Field 0 Initial ❑ Septic Tank F] Upgrade F] Holding Tank ❑ Renewal ❑ Privy ❑ Well ❑ Water Storage ❑ THIS APPLICATION INCLUDES A WAIVER REQUEST FOR: F ( CC o 'Ta r- ( �' L 0 Permit/Rush Fees: Date of Payment: Permit No. Distance: to Waiver Fees: Date of Payment: Waiver No. _(o ( ID May 2025 Page 1 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org April 7, 2026 Municipality of Anchorage Development Service Department On-site Water and Wastewater Program 4700 Elmore Rd. Anchorage, AK 99507 Reference: Septic system replacement for: Property Owner: Mary & Nathaniel Johnson Street Address: 22723 Judd Dr., Chugiak, AK 99567 Legal Address: Knik View Estates Subdivision, Block 3, Lot 28, Anchorage R/D Re: Request for Permit To: Curtis Townsend, The Alaska Native Tribal Health Consortium, Division of Environmental Health and Engineering, is assisting homeowner (Mary Johnson) with upgrading and replacing their existing onsite septic system. The existing septic tank and trench style drainfield installed in August 2003 are in failure mode, with reports from the local septic tank pumping company that the drainfield was failing in April 2022. Homeowners also experience sewage backing up into the home along with frequent septic tank pumping every 1-3 months beginning in August 2023. We propose to replace the entire septic system, with a new sewer service line, one building double-cleanout, a new 1,500 gal, polyethylene deep bury septic tank by Greer Tank, and a new deep-trench absorption field. The new field will be built in the original designated alternative location, adjacent to the existing trench. Dimensions of the existing trench are 3-4ft wide by 8ft deep of sewer rock and 47ft long (Reference current COSA in Muni electronic files). The existing trench will be abandoned in place and the septic tank will be pumped out and decommissioned in accordance with AMC 15.65.205 (G). The new parallel split trench dimensions will be 3ft wide by 5ft deep of effective depth sewer rock and 92ft long total (split into two 46ft long trenches) and covered with 4ft of soil and 4in of boardstock insulation. Project Basis (summary) • The Scope of this project is the complete replacement of an existing onsite system for the Mary Johnson site in Chugiak, AK. System type: two‑lateral parallel conventional trenches, Page 2 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org each trench is 3ft wide with 5ft of sewer rock, 46ft long, with Infiltrator Quick5 chambers covering a 4‑inch perforated distribution pipe. A mid‑line D‑box will split flows into each lateral. Finished soil cover will have 4” of rigid insulation and 3-4ft of soil covering; a final grading of 3H:1V will be provided to allow for positive run-off drainage, blending into the existing grade and driveway edge, and providing finished landscaping and yard restoration. Absorption Field Design Criteria • 4 bedroom house. • Design flow rate: 150 gal/day/bedroom. • Total design flow: 4 br * 150 gal/day/br = 600 gal/day. Test Holes Used for Design o MM&M TH#3 - 8-22-2003 (This was from a series of 3 test holes that were done back in 2003 when the site was being developed. Test Holes #1 and #2 were in the back yard and #3 was in the front yard. They eventually switched from the original design location and moved the installation and field to the front yard. Which is where MM&M TH#3 was dug. So we are going to call this hole MM&M TH#3, to differentiate from the ANTHC test holes #1-#3)  This test hole is being used to determine the absence of bedrock down to 18ft. This test hole is located near the center of our proposed trench #1. The 18ft offset was then transferred to all points of the deep trench, which resulted in reducing the effective depth of the sewer rock from 8ft to 5ft, in order to provide a 6ft vertical separation distance from the bottom of hole and assumed bedrock layer. There were no wells in the vicinity that could be used to confirm or refute the presence of bedrock.  Percolation Test from MM&M #3, 8/22/2003 of 15 min/in will be used as it is more conservative compared to 4 min/inch from the 5/20/24 test, and this test (8-22-03) was run between 7-8ft BG. o ANTHC TH#2 - 11/2023  This test hole was where the soil sample that was sent for analysis came from. This is the Shannon and Wilson December 2023 sample. All other data related to this test hole has been lost (or misfiled). • Soil at 4ft is: Silty Sand with Gravel - USCS Classification: SM. • Soil at 8ft is: Silty Gravel with Sand - USCS Classification: GM. o ANTHC TH#3 - 5-20-24 Page 3 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org  The percolation test was 4.0 min/inch on 5-20-24. It was performed at 4ft below grade by ANTHC, see attached Soils Log – Percolation Test signed on 5/29/24. However, the Percolation Rate that we are using is the more conservative one (15 min/in) from the 8-22-23 MM&M Test Hole #3. o ANTHC TH#4 - 7-11-25  The ANTHC Test Hole # 3 showed some signs of groundwater trickling into the test hole. It was assumed to be effluent that was coming from the existing trenches, as this test hole was below the trenches. The ANTHC Test Hole #4 was dug adjacent to the field, and not down-gradient of the existing trench, in order to check for groundwater. No groundwater was found, and the assumption verified that the liquid showing up in TH#3 was indeed from the existing trench. But ANTHC TH#4 was used to rule out groundwater. • The soil absorption system will be designed as a deep trench system. Vertical Separation Basis for Design • EG of MM&M Test Hole #3 is 147ft above sea level and dug to 18ft. This is also the location of Trench #1. 147ft EG – 18ft BG + 6ft VSD = 135ft. This is the maximum depth allowed for the sewer rock for this trench. We were not going to be able to use an 8ft effective trench here as originally planned, and thereby reduced the effective sewer rock to 5ft. The bottom of this 5ft effective trench #1 will be set to 136ft, providing more than 6ft of vertical separation distance (actually 7ft above the assumed impermeable layer). (See below for Trench #2 elevations.) Trench Length and Loading Calculations o 5ft Effective o 3ft trench width o Loading Rate is 0.8 gal/day/sq ft  Design for an absorption rate of: 0.8 gal/day/sq ft – Per Muni AMC 15.65.355 code – Table 6, under section G – Disposal Field Sizing – for 15 min/inch percolation rate and having a soil type of Silty Gravel with Sand, USCS = GM, at the 8ft BG soil layer. • (Note: this is the initial design loading rate to start design. The Final Loading rate based on final design parameters will be lower. - See below) Page 4 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org o Average Daily Flow = 600 gal/day o 600 gal/day / 0.8 gal/day/sq ft = 750 sq ft (minimum treatment area) o Which results in a Length of 750 sq ft / (5ft * 2 walls) = 75ft o Split Trench in two runs to fit in yard = 75ft / 2 trenches = 37.5ft each trench. Round to 40ft to calculate number of Quick5 Infiltrator chambers over perforated pipe. o 40ft / 5ft per chamber = 8 chambers per trench o Trench to be center-fed due to location of septic tank, and clearance between driveway and outside property line. A D-box will be used to split the flows in each trench. (the yard slopes down to the west and the trenches will drop in elevations to follow slope of the yard and provide 10ft of horizontal separation (2x effective sewer rock depth (of 5ft) = 10ft) o This splits the trench into 2 sections. Each section will need end-caps on the chambers, which adds 4ft to the trench (12” per end-cap), and we will provide 2ft of space to install the D -box (which is tight). This results in a trench length of 46ft/each. o If we back-calculate this new trench length. Then 46ft/trench * 2 trenches = 92ft of trench. 92ft * (5ft * 2 walls) = 920 sq ft. 600 gal/day / 920 sq ft = 0.652 gal/day/sq ft. This is a better loading rate, and makes the system a little more conservative for the 15 min/inch perc rate (which is the cut-off threshold for a 0.8 loading rate) and the replacement of a 23-year old failed system. Final Design Layout • The Deep Trench will have a 5ft effective depth, 3ft wide, and have two, 46ft long/trenches in parallel, separated by 10ft, (92ft total length). • Check depth of Trench #2 (elevation). The 18ft offset for trench #2 is: 143ft EG – 18ft BG + 6ft VSD = 131ft (maximum depth). The bottom elevation of Trench #2 is at 134ft, providing 9ft above any assumed bedrock layer. • The 4” perforated Sch 40 PVC distribution piping in the absorption field will be covered and protected with the use of Infiltrator Quick5 chambers, that will protect the discharge piping from clogging and provide a void space that can handle severe peak flow events and helps with the distribution of wastewater. It also extends the life of the drainfield. The system will be covered with 4” of rigid boardstock insulation. • Septic tank sizing: Muni requirement for 4-bedroom home is a 1,000 gal, plus 250 gal for each bedroom over 3, which would be 1,250 gallons. Upsize and use a deep-bury polyethene septic tank, 1,500 gallon septic tank, made by Greer Tank. Page 5 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org Figure 1. New Proposed Septic System Layout Figure 2. New Proposed Septic System Cross Section Profile Page 6 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org Figure 3. New Proposed Septic System Profile of both trenches Test Hole Logs: Soils & Percolation Tests The proposed drainfield is being designed based on Test Hole #3 from 8/22/2003 log. Test hole #3 was dug to 18ft with no impermeable layer or groundwater encountered. The ANTHC test hole from 5/20/24 was dug to 10ft due to equipment restrictions (excavator ’s arm was only able to dig down to 10ft) and surface limitations (a significant surface area would been required to trench down for the excavator to reach a deeper target depth). Test Hole #1 soil was classified as Silty Gravel w/ Sand Clusters (GM) and ANTHC’s 2023 Test Hole #2 had a soil analysis at 8ft classified as Silty Gravel w/ Sand (GM). The percolation test from 8/22/2003 was 15 min/in compared to 5/20/2024’s test being 3.64 - 4.0 min/in. Percolation rate of 15 min/in was used as a more conservative approach. The resulting design application rate was 0.8 gal/day/ft², but based on finished design layout parameters, the Final Application Rate is 0.65 gal.ay sq ft. Page 7 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org Figure 4 and 5 - Test Hole MM&M #3 - 8/22/2003 & ANTHC Log – 5/20/2024 Figure 6. ANTHC Log – 7/11/2025 Page 8 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org Groundwater Monitoring MM&M Test Hole #3 did not encounter groundwater during digging with a seven day monitoring groundwater depth and was noted as “none observed”. ANTHC’s test hole #3 from 5/20/2024 encountered trickling “groundwater” (smelled of sewage) starting at 8ft deep down to 10ft deep coming from a direction of the existing trench drainfield. A seven-day monitoring showed the “groundwater” level at 7.5ft below grade with the monitoring tube still smelling of sewage. It was suspected at the time that the trickling “groundwater” was sewage surcharge from the existing failed trench. Another ANTHC test hole (TH#4) was performed on 7/11/2025 to confirm or validate the “groundwater” from 5/2024 was not actual groundwater and rather effluent from the existing trench drainfield. The test hole was dug to 13.5ft with no groundwater encountered. Again, the depth was determined by the excavator equipment and surface area limitations. A seven day monitoring observation for the 7/11/2025 test hole showed no groundwater, see Figure 1 for all four test hole locations. It is suspected that there was no groundwater observed in the test hole since it was located upgradient in relation to the existing trench. Therefore, it is concluded that the groundwater is not naturally present at this site based on evaluating 4 test holes and monitoring observations. Figure 7. Snippet of Video from ANTHC 5/20/24 Test Hole Seepage Source of sewage smelling liquid coming in the side of trench at 8ft BG, below (downgradient) existing trench. Page 9 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org Neighboring Residential Wells Proximities The immediate, adjacent properties on Judd Drive and Judd Circle utilize individual onsite septic systems and public water utility. Properties along Ursa Major Circle are all on individual onsite septic and private well systems. The closest private well to the new proposed septic system (from new septic tank location) is approximately 517ft located on Bear Park Lot 12 followed by the next private well being 578ft located on Bear Park 11. A third private well is located on Bear Park Lot 13 approximately 611ft from the new proposed septic system location. COSA Private Well Water Sample Histories Bear Park Lot 11 well was completed on 4/29/1985 to 265ft with no history of nitrates and the latest sample from 11/15/2019 resulted in a not detected. Bear Park Lot 12 well was completed on 9/23/1985 to 154ft with the only sample in the database from 6/20/1996 resulted in nitrate levels of 2.33 mg/l. Bear Park Lot 13 well was completed on 4/24/1985 to 162ft with a history of nitrates below the 10 mg/l with latest sample from 9/20/2002 showed 0.808 mg/l of nitrates. Two past samples from 10/22/1998 showed 0.60 mg/l and 5/13/1991 showed 0.56 mg/l of nitrates. All samples indicate a steady, but minute levels, of increasing nitrates overtime. Based on the wells completed on Bear Park lots 12 and 13, two wells are completed in similar elevations with comparable levels of nitrates. The well on lot 11 indicate no nitrates. Figure 8. Neighborhood Properties – Sewer & Water Systems Page 10 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org Separation Distance Waiver Request – AMC 15.65.060(A)(1)(d) There is a code deviation from AMC 15.65.060(A)(1)(d) related to the required field-to-field separation distance between the proposed subsurface disposal field and the existing subsurface disposal field. AMC 15.65.060(A)(1)(d) requires a minimum separation distance of two times the depth of gravel beneath the perforated distribution pipe, or 10ft, whichever is greater, from any existing or abandoned subsurface disposal field. The existing trench has 8ft of drainrock beneath the perforated pipe, which results in a required separation distance of 16ft. The proposed design provides 10ft edge-to-edge separation, which is less than the required 16ft. As such, a separation distance waiver is requested to allow a reduced field-to-field separation of 10ft. A second trench lateral was added in order to reduce the applied loading rate and improve overall system performance. With the addition of the second lateral, there is insufficient remaining width within the designated disposal area to further increase the separation distance. There is also 10ft of separation between the proposed new laterals. The available yard area, driveway, property line, roadway easement, and required layout constraints do not allow the proposed disposal field to be shifted an additional 6ft to meet the full 16ft separation. The existing absorption trench has failed and will be permanently disconnected from further effluent flow. The existing septic tank and service line will be decommissioned and replaced, and the new septic tank will convey effluent directly to the proposed disposal field only. The existing trench lateral will be abandoned in place and will no longer function as an active wastewater treatment area. The proposed system provides improved hydraulics, lower loading rates, and vertical separation distances to any impermeable layer compared to the existing system. With the existing trench hydraulically isolated from the new system and no longer receiving effluent, and given the reduced loading of the proposed disposal field, a 10 ft separation distance is unlikely to result in adverse interaction or cross-connection between the proposed and abandoned trenches. Page 11 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org Based on site constraints and system replacement, the requested reduction in separation distance is protective of public health and consistent with the intent of AMC 15.65. In conclusion, the design of this system conforms to standard engineering design practice, and with the requested horizontal separation distance waiver, meets the intent of Municipal Wastewater code AMC 15.65. • A test hole was dug within 30ft of the proposed drainfield, with soils analyzed by Shannon and Wilson, Inc., and a perforated monitoring tube left in place to record groundwater over a 7 day period. (the pipe has since been removed). • The percolation test was performed by an ANTHC field technician under the direction of an engineer, in May of 2024. • There are no surface waters impacted by this design. • The topography of the site is steadily sloping downward in elevation, from the East side of the house to the West (toward the street), and there is about a 7ft drop to the West side of the lot due to the Judd Drive roadway bar ditching. • No residential wells are located in the neighborhood but there are private wells located to the East along Ursa Major Circle (nearest well to new proposed septic system is ~517ft), showing nitrate levels in the past (between 0.56 – 2.33 mg/l). • A review of the Muni COSA’s and the State’s WELTS database was performed. There are no residential wells within 100ft of the proposed onsite septic system for Knik View Estates Block 3 Lot 28. • The design of the absorption field will not cause surface water ponding or surface water run-off, to run onto neighboring lots. • The design of this system adequately protects public health. The following information is included with this submittal: 1. Revision 2: Permit Request letter with scope of project description and supporting design calculations (This letter dated 4-7-26) 2. Soil Analysis – 10-6-23 (Previously submitted to Muni) 3. Soils Log & Percolation Test Form – 5-20-24 (Previously submitted to Muni) 4. Test Hole Seepage Video – 5-20-24 (Previously submitted to Muni) Page 12 of 12 Alaska Native Tribal Health Consortium / Division of Environmental Health & Engineering 4500 Diplomacy Dr. Suite 454, Anchorage, Alaska 99508 Phone: (907) 729-3600, Fax: (907) 729-4090 / www.anthc.org 5. 22723 Judd Dr., Chugiak, AK 99567 Neighborhood Muni property map (Previously submitted to Muni) 6. AKA-23-ANC - Johnson - Original Test Hole #3 (Previously submitted to Muni) 7. Sealed Engineering Design Plans – AKA-23-ANC – Revised (PFAR Set 4-7-26) 8. Muni Onsite Permit Application for system replacement (Previously submitted to Muni) 9. Muni Onsite Water & Wastewater Permit Fees (Previously submitted to Muni) 10. Historical COSA’s and System Upgrade Report – See Muni data files – Used for reference but not included. (Previously submitted to Muni) 11. Mary Johnson Muni Test Hole 7-11 -25 Signed RSinnok 8-5-25 (Previously submitted to Muni) 12. Municipality of Anchorage - Review Comments and ANTHC Responses - Knik View Estates B3 L28 – 2-3-26 (Previously submitted to Muni) 13. Mary Johnson Muni test hole and perc test 1-23-26 RSinnok Signed (Previously submitted to Muni) 14. Mary Johnson ANTHC Test Hole #3 (5-20-24) - Revised If the department would like to discuss this project or have questions or concerns, please contact me at (907) 644-4454 or by e-mail at ksauers@anthc.org. Sincerely, Kurt D. Sauers PE CC: Project Files 04/07/2026 Municipanty of Anchorage P.O. Box 196650 0 4700 Elmore Road hftp://www.muni.og/Onsite Development Division WastewaterOn-Site Water and Program * * * * VARIANCEIWAIVER REVIEW Waiver#: OSV261012 COSA#: Permit#:OSP251419 P I D#: 051-043-30 Legal Description: KNIK VIEW ESTATES BILK 3 LT 28 Engineer:°" Your request for a waiver of the required I Cofeet horizontal separation from the disposal field to the F i C-- 0 has been approved. The approved separation distance is 10.0 feet. This waiver approval applies to the existing disposal field only. Any future upgrade to the on - site wastewater disposal system will require all separation distances be met or another approval from this department. Waiver is Granted: X Waiver is not Granted: Date: _ � � 0 �` E'er Approved by: U`'—�s Name of Reviewer **** VARIANCE/WAIVER REVIEW **** 1Y <� O AL EUT ALASKA NATIVE TRIBAL HEALTH CONSORTIUM DIVISION OF ENVIRONMENTAL HEALTH AND ENGINEERING 4600 DIPLOMACY DRIVE ANCHORAGE, ALASKA, 995083440 PHONE: (907) 729.3600 FAX: (907)729.4090 FI , � 1 i 1 • e ll I 1 1 PLAN SET NUMBER: AKA-23-ANC ANTHC PROJECT NUMBER: AN 23-C3K SHEET LIST TABLE SHEET # SHEET TITLE PG # - COVER SHEET 1 G-001 DESIGN CRITERIA 2 G-002 COMMUNITY MAP 3 C-003 PLAT 4 V-101 MARY JOHNSON SURVEY PLOT 5 V-102 I MARY JOHNSON AERIAL 6 C-101 MARY JOHNSON SITE PLAN 7 C-102 MARY JOHNSON SOILS AND AS-BUILTS 8 C-103 MARY JOHNSON DESIGN NOTES 9 C-104 MARY JOHNSON DESIGN PLAN 10 OSD-100 SEPTIC SYSTEM SCHEMATIC 11 OSD-301 SEWER SERVICE AND CLEANOUT - ABS PIPE 12 SSSD-400 SEWER SERVICE LINE TRENCH 13 OSD-522 IM - 1530 - 1500 GALLON SEPTIC TANK - ABS PIPING 14 OSD-563 GREER SEPTIC TANK DEEP BURY 15 OSD-600 DISTRIBUTION BOXES 16 OSD-620 SINGLES -WIDE SEPTIC SYSTEM ABSORPTION 17 SSSD-641 GRAVITY DRAINFIELD LATERALS WITH PERFORATED PIPE 18 I USER:MCYANDELL GENERAL DESIGN NOTES 11. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO NOT ENCROACH 1. THE GRAVITY WASTEWATER SEWER SERVICE LINE FROM THE HOUSE OVER PROPERTY LINES. IF SURVEY SUPPORT FROM ANTHC IS NEEDED, TO THE SEPTIC TANK SHALL BE SET AT A MINIMUM OF 2% SLOPE. IT SHOULD BE REQUESTED WITH ADVANCED NOTICE. NOTE: ANTHC HOWEVER, THIS CAN BE STEEPER AS SLOPE VARIES BASED ON LENGTH SURVEY SCHEDULE MAY NOT MEET CONTRACTOR'S NEED FOR AND DISTANCE AND THE SLOPE EQUALS RISE OVER RUN, BUT THE CONSTRUCTION START DATE. SLOPE CANNOT BE MORE THAN 20% FOR 4" PIPE. 12. SEWER ROCK AND COARSE FILTER SAND MUST MEET BOTH AK DEC 2. THERE SHALL BE A MINIMUM OF 4 FT OF COVER OVER PIPES, SEPTIC AND/OR THE MUNICIPALITY OF ANCHORAGE SPECIFICATIONS. TANK, AND DRAINFIELD, PLUS 2" OR 4" OF BOARDSTOCK INSULATION 13, THE CONTRACTOR IS RESPONSIBLE FOR LOCATING ALL BURIED OVER PIPE, TANK AND DRAINFIELD, TO PREVENT FREEZING, UTILITIES, EASEMENTS, PROPERTY LINES, RIGHT-OF-WAYS, SURFACE DEPENDING ON LOCATION. WATER SET -BACKS, WELL RADIUS, AND WATER SERVICE LINES, THAT 3. PER DEC AND THE MUNI THE BOTTOM OF DRAINFIELD (GRAVEL BASE) MAY INTRUDE INTO THE DESIGN LAYOUT OF THE PROPOSED ON -SITE MUST HAVE 4 FT OF VERTICAL CLEARANCE TO GROUNDWATER AND 6 SEPTIC SYSTEM. FT TO AN IMPERMEABLE LAYER. (HOWEVER, WITHIN THE MUNICIPALITY 14. ANY ENCROACHMENTS FOUND, THAT WERE NOT IDENTIFIED ON THE THERE CAN BE A REDUCTION TO VERTICAL AND HORIZONTAL ENGINEERING PLANS SHOULD BE BROUGHT TO THE ATTENTION OF THE SEPARATION DISTANCES WHEN AN ADVANCED WASTEWATER ENGINEER -OF -RECORD. TREATMENT SYSTEM IS USED.) 15. CONTRACTOR TO ESTABLISH SURVEY BENCHMARKS, FROM WHICH TO 4. A 100 FT HORIZONTAL SEPARATION DISTANCE MUST BE MAINTAINED ESTABLISH ELEVATIONS. THE ON -SITE SEPTIC SYSTEM HAS BEEN BETWEEN THE WELL AND SEPTIC TANK AND DRAINFIELD. INCLUDING DESIGNED USING ELEVATIONS ABOVE SEA LEVEL (ASL). 100 FT FROM NEIGHBORING WELLS, LAKES, PONDS, RIVERS, SLOUGHS, 16. SITE INSPECTIONS - THE CONTRACTOR MUST NOTIFY THE PROJECT CREEKS, AND STREAMS. MANAGER AND ENGINEER AT LEAST 24 HRS PRIOR TO BEGINNING 5. THERE MUST BE 10 FT OF HORIZONTAL SEPARATION FROM THE SEPTIC CONSTRUCTION. DEC MUST ALSO BE NOTIFIED AND SHOULD BE SYSTEM TO THE PROPERTY LINES. ENSURE NEW SYSTEMS DO NOT COORDINATED WITH ANTHC. INSPECTIONS SHOULD TAKE PLACE ENCROACH OVER PROPERTY LINES. DURING NORMAL BUSINESS HOURS. 6. THE DRAINFIELD MUST BE LOCATED GREATER THAN 50 FT AWAY FROM a. THE FOLLOWING ARE INSPECTION POINTS THAT MUST BE PHOTO A 25% OR STEEPER SLOPE. DOCUMENTED BY THE CONTRACTOR. GENERAL CONSTRUCTION NOTES: I. INITIAL, BEFORE PHOTOS OF THE SITE, PRIOR TO THE START OF 1. CONTRACTOR MUST COMPLY WITH ALL OSHA TRENCHING CONSTRUCTION REQUIREMENTS, REFER TO SECTION 31 23 16.13, TRENCHING. ii. THE BOTTOM OF ALL TRENCHES EXCAVATION LIMITS AND SLOPES SHOWN ARE 1:1 AND ASSUMED TO BE Ili, THE BOTTOM /BEDDING OF THE SEPTIC TANK AND PUMP TYPE B SOILS, BUT MUST BE VERIFIED BY CONTRACTOR. MOUND CHAMBERS SYSTEM FINISHED GRADE SLOPES SHOULD BE 3:1 FOR EASE OF MAINTENANCE. iv. THE BOTTOM OF THE PRESSURE MOUND DRAINFIELD 2. GENERAL LANDSCAPING AND SITE CLEAN-UP - IN GENERAL, ALL V. TOP OF SAND LINER OF PRESSURE MOUND DRAINFIELD DISTURBED AREAS SHALL BE GRADED, COMPACTED, LEVELED, AND vi. TOP OF SEWER ROCK OF PRESSURE MOUND DRAINFIELD HAND OR MACHINE RAKED. TOP SOIL SHALL BE USED TO PROVIDE ORGANIC MATERIAL FOR ROOT STRUCTURE OF GRASS. vii. LAYOUT OF PERFORATED DISTRIBUTION MANIFOLD AND HYDRO -SEEDING IS PREFERRED. ROCKS LARGER THAN 2" SHOULD BE DRAINFIELD CHAMBERS REMOVED FROM THE SURFACE, AND IDEALLY THERE ARE NO ROCKS viii. BOARDSTOCK COVERING OF BED SYSTEM WITHIN 4" OF THE SURFACE. ALL CONSTRUCTION DEBRIS, BRUSH, ix. GEO-FABRIC COVERING OF BED SYSTEM ROOT BALLS, AND LIMBED TREE BRANCHES SHALL BE REMOVED FROM THE SITE. BUCKED LOGS CAN BE NEATLY STACKED AND LEFT, IF X. TOP OF SEPTIC TANK, RISERS, AND PUMP CHAMBERS HOMEOWNER AGREES. xi. CONTROL AND ALARM PANEL KIOSK, INTERIOR OF PANELS, AND 3. ALL SEPTIC SYSTEM OBSERVATION PORTS SHALL BE VERTICAL AND EXTERIOR PLUMB, AND CAPPED, AND SHALL BE CLEANED -OFF OF ALL MUD, DIRT, xii. SEWER SERVICE LINE AND CLEAN -OUT LABELS, AND MARKINGS. ACCESS RISERS ON SEPTIC TANKS SHALL BE SECURED AND BE CLEARED OF DIRT AND MUD. IF GRAVEL OR PAVED xiii. SEWER SERVICE LINE HOUSE PENETRATION OF CONNECTION DRIVEWAYS ARE IMPACTED THEY MUST BE REPLACED TO AN "OR POINT BETTER" STATUS. xiv. FINAL GRADING AND FINISHED GRADE OF SEPTIC SYSTEM FROM 4. ANY ABOVE -GRADE OR EXPOSED INSULATED RISERS ON THE SEPTIC MULTIPLE ANGLES TANKS AND LIFT STATIONS MUST BE WRAPPED IN DENSO BLUE 17. MUNICIPALITY OF ANCHORAGE ALSO HAS SPECIFIC ONSITE INSPECTION VISCOTAQ, VISCOWRAP ST TAPE. POINTS; WHICH ARE: 5. THE SEWER ROCK FOR THE DRAINFIELD MUST BE RAKED LOOSE AND a. PRE -CONSTRUCTION MEETING WITH ENGINEER TO VERIFY SITE NOT COMPACTED BY EQUIPMENT. CONDITIONS, DESIGN LAYOUT, AND PERMIT REQUIREMENTS 6. THE BOARDSTOCK LAYER MUST BE LAID ONTO SMOOTH SOIL SURFACE b. BOTTOM OF HOLE WITHOUT LARGE ROCKS OR VOIDS, AND CAPPED WITH CLEAN LOAMY C. TOP OF SAND LINER BACKFILL SOIL WITHOUT LARGE ROCKS OR VOIDS. 7. CONSTRUCTION PHOTOS AND WORK LOGS MUST BE SUBMITTED DAILY, d. TOP OF SEWER ROCK AS WORK PROCEEDS. e. DISTRIBUTION PIPING AND DRAINFIELD CHAMBERS 8. THE SYSTEM MUST BE INSTALLED AS DESIGNED, AND ONLY CHANGED f. BOTTOM OF SEPTIC TANK OR RE -POSITIONED WITH APPROVAL OF THE ENGINEER. g. AFTER SEPTIC TANK IS PLACED 9. UNDERGROUND UTILITIES MUST BE IDENTIFIED AND LOCATED PRIOR h. FINAL GRADING TO EXCAVATION, PLEASE CALL ALASKA DIGLINE, INC AT 811, A MINIMUM OF THREE WORKING DAYS PRIOR TO INSTALLATION OF THE SYSTEM. 18. THE CONTRACTOR SHALL PROVIDE ANTHC OPERATION AND MAINTENANCE MATERIALS, AND ANY COPIES OF MANUFACTURER'S 10. ONCE LOCATED, UNDERGROUND UTILITIES MAY NEED TO BE LITERATURE OF THE SYSTEM COMPONENTS. ANTHC WILL COMPILE PROTECTED FROM DAMAGE DURING INSTALLATION. THE O&M MANUAL FOR THE HOMEOWNER. REFERENCES • STATE OF ALASKA ADEC ONSITE WASTEWATER SYSTEM INSTALLERS MANUAL, OCT 3, 2025 • ONSITE WASTEWATER TREATMENT SYSTEMS: SOIL AND SITE EVALUATIONS, DESIGN, CONSTRUCTION AND MAINTENANCE, TYLER AND ASSOCIATES, INC. 1998 • WISCONSIN MOUND SOIL ABSORPTION SYSTEMS: SITING, DESIGN, AND CONSTRUCTION MANUAL, JC CONVERSE AND EJ TYLER, JANUARY 2000 • PRESSURE DISTRIBUTION NETWORK DESIGN, JC CONVERSE, JANUARY 2000 • WASHINGTON STATE DEPT. OF HEALTH, PRESSURE DISTRIBUTION SYSTEMS, 2012 • ADEC WASTEWATER DISPOSAL REGULATIONS 18AAC72, OCT 1, 2023 • ANTHC TECHNICAL SPECIFICATIONS • ANCHORAGE WASTEWATER CODE 15.65 TABLE 2 - AMC 15.65 WASTEWATER APPLICATION RATES CONVENTIONAL SUBSURFACE DISPOSAL FIELDS PERCOLATION RATE PIT, DEEP TRENCH OR gED (GPD! SF) (MIN! IN) WIDE TRENCH (GPD! SF) 0-1 USCS SAND 1.2 0.8 0-1 USCS GRAVEL NOT SUITABLE2 NOT SUITABLE2 1-5 1.2 0.8 6-15 0.8 0.5 16-30 0.6 In 31-60 0.45 0.3 GREATER THAN 60 NOT SUITABLE' NOT SUITABLE' FILTER LAYER 1.0 0.7 FOOTNOTES: 1. USCS SOIL CLASSIFICATIONS SHALL BE DETERMINED BY A SIEVE ANALYSIS. 2. SUITABLE WITH THE INSTALLATION OF A TWO FOOT DEEP SAND FILTER LAYER CONSTRUCTED IN ACCORDANCE WITH SUBSECTION 15.65.210D.3.B., OR DOCUMENTATION THAT THE RECEIVING SOIL IS NOT USCS CLASSIFIED AS A GW OR GP SOIL; OR AS OTHERWISE WAIVED WITHIN THIS ORDINANCE. 3. SUITABLE FOR CATEGORY 11 AND III ADVANCED WASTEWATER TREATMENT SYSTEMS CONSTRUCTED IN ACCORDANCE WITH CHAPTER 15.65 PART III. 4. A SEEPAGE PIT SHALL NOT BE USED IN SOILS WITH A PERCOLATION RATE SLOWER THAN THIRTY MINUTES PER INCH. WASTEWATER CODE 18 AAC 72 - MIN SEPTIC TANK SIZING ADEC # OF BEDROOMS MIN SIZE 0-3 1,000 GAL 4-8 1,000 GAL PLUS 250 GALS FOR EACH BEDROOM OVER THREE 9-13 2,500 GAL 14-18 3.000 GAL GREATER THAN 18 1,125+ (0.75 X DESIGN FLOW) GENERAL NOTES: THESE DRAWINGS HAVE BEEN DEVELOPED FOR CONSTRUCTION BY CONSTRUCTION CONTRACT METHODOLOGY. CONSTRUCTION SPECIFICATIONS HAVE ALSO BEEN DEVELOPED SPECIFICALLY FOR THIS PROJECT. TOGETHER, THE DRAWINGS AND CONSTRUCTION SPECIFICATIONS CONSTITUTE A COMPLETE AND INSEPARABLE SET OF CONSTRUCTION DOCUMENTS, INCLUDING ALL NECESSARY CONSTRUCTION AND MATERIALS SPECIFICATIONS TO ENSURE THE PROJECT AS CONSTRUCTED MEETS THE DESIGN INTENT. ANY CHANGES TO CONSTRUCTION METHODS OR MATERIALS SHALL BE APPROVED IN ADVANCE BY THE RESPONSIBLE REGISTERED PROFESSIONAL. REGARDING MANUFACTURER'S NAMES USED IN ENGINEERING DRAWINGS AND TECHNICAL SPECIFICATIONS. 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SEC, 4,T15N.,N IM,S.M..AK, COHTAIRIN9 40.15 ACREa'MORE ON "as D 6CK E749 FA.LMER.,AK. 99G45 a Division of Environmental Health and Engineering 45M Diplomacy Drive Anchorage, Alaska 99508 (907)729.3609 OF..AIgrNA 'YV 0 . .. yr 0�r ........... �,�• KURTD SAUERS : i''FFp P..... •AAA, kr 0 1- BAR IS ONE INCH ON ORIGINAL DRA WING. IF NOT Y W Z d ~ W 5a � w > Q UF"�}OC dN^_51 a PLAN SET: AKA-23-ANC PROJ MGR: ML PROJENG: KS DRUMS ENG: - DRAWN BY: MY SHEET TITLE PLAT G-003 SHEET 4 OF 4 PRINTED: 71 C RANKIN ROAD — — — — — — — — — - - —� TBM # 602 — SCRIBED "X" ON CONCRETE PAD — -- \ EL = 136.8' — t /29 / 3 TWO STORY HOME SHED ))) 18" CMP CULVERT /( TREES (BIRCH) N_"� INVERT ELEV=135.9' / — — — _ _253.67' S89°39'S2"W sP �_ I �JJ W N / GRAVEL DRIVEWgy -'�`"' '�'-'c J� MARY S. JOHNSON +v t gSPHALTDRIVEWAY "`--- l''�1 22723 JUDD DRIVE .lE v GARAGE FF = 147.4' c k ` CHUGIAK, AK 99567 d fo / 18" CMP CULVERT w/ v TWO STORY HOME % k� LOT 28 BLOCK 3N v INVERT ELEV=136.4' n / wooD DECK \ J PLAT 86-113 V,110D y� FIRST FLOORDx ANCHORAGE R.D. / ;!IV1 FF=152.3' 1(7 m e LAT: N61° 25' 32.07 v v v t` r�-�`t X �"�, . LONG: W149° 28' 27.73" 1 ± 24,188 SQ FT Lu t1 �'�(�..�/'�' ± 0.56 ACRES V.00 DECK I ) U SEPTIC TANK /`���• INLET INV EL = 144.5' / SHED /j r 1� RETAINING WALL --X—X— _ _278.14'-- / TREES (BIRCH) S89°37'11"W� I I TREES (BIRCH) x �t lvY / / J TWO STORY HOME / ! 27 t / / t — 10' T&E EASEMENT \ \ JUDD CIRCLE �\\ 1 I 1 26 SITE PLAN N 1 1" = 20' 0 10' 20' 40' NOTES 1. FIELD SURVEY PERFORMED JUNE 21, 2023. 2. ALL DIMENSIONS SHOWN ARE IN US SURVEY FEET. 3. THIS DRAWING REPRESENTS AN AS -BUILT SURVEY OF PLANIMETRIC FEATURES AND GROUND CONDITIONS AS THEY EXISTED ON JUNE 21, 2023. 4. A TITLE REPORT WAS NOT PERFORMED, EASEMENTS OF RECORD OTHER THAN THOSE SHOWN ON THE Division of Environmental PLAT OF RECORD MAY EXIST. Health and Engineering 45M Diplomacy Drive 5. ADDITIONAL UNDERGROUND UTILITIES MAY EXIST Anchorage, Alaska 99506 (907)729-3600 THAT ARE NOT SHOWN ON THIS AS -BUILT SURVEY. 6. WATER LINES WERE DRAWN IN USING RECORD '����"�`, AS -BUILT DRAWINGS. LOCATIONS ARE APPROXIMATE. OF It 1 ........ gl ys�,1 49TM•'*�� .................... ... y j...P .. . ....� PAUL RUSSELL LS14430 � LEGEND � , ......... .� ® FOUND PLASTIC CAP 0 1" FOUND REBAR SP SET SPIKE BAR IS ONE INCH ON ORIGINAL DRAWING, IF NOT ® SET BENCHMARK ADJUST SCALES ACCORDINGLY — — — PROPERTY LINE EASEMENT LINE ® TELEPHONE PEDESTAL } m CABLE PEDESTAL Y W U Q ELECTRIC TRANSFORMER Q ~ LJ1 Lu ® ELECTRIC PEDESTAL Z Q U ELECTRIC METER © GAS METER = 0 uj o© WATER VALVE z Q Z —vvvo— WATER MAIN LINE Q V ws WATER SERVICE LINE n. ® CLEANOUT Q SEPTIC VENT sr SEPTIC TANK ss SEWER SERVICE LINE 'z_ —S—S_ LEACH FIELD TREE LINE —x—X— WOOD FENCE o QQ FLAG POLE a AQ ANTENNA w PLAN SET: AKA-23-ANC PROJ MGR: ML PROJENG: KS DRUMS ENG: - DRAWN BY: SHEET TITLE MARYJOHNSON SURVEY PLOT V-101 SHEET 1 OF 2 LAYOUT: SITE NOTES 2. ALL DIMENSIONS SHOWN ARE IN US SURVEY FEET. 3. THIS DRAWING REPRESENTS AN AS -BUILT SURVEY OF PLANIMETRIC FEATURES AND GROUND CONDITIONS AS THEY EXISTED ON JUNE 21, 2023. it 4. A TITLE REPORT WAS NOT PERFORMED, EASEMENTS OF RECORD OTHER THAN THOSE SHOWN ON THE Division of Environmental PLAT OF RECORD MAY EXIST. Health and Engineering 4500 Diplomacy Drive Anchorage Alaska 99608 S. ADDITIONAL UNDERGROUND UTILITIES MAY EXIST (907) i29-3600 THAT ARE NOT SHOWN ON THIS AS -BUILT SURVEY. 6. WATER LINES WERE DRAWN INUSING RECORD «s�uuTDRAWINGS. LOCATIONS ARE APPROXIMATE. mgy LEGEND v� FOUND PLASTIC CAP @� pouwn nsBAa TWO STORY HOME, SET SPIKE BAR IS ONE INCH ONORIGINAL DRANNG, IF NOT 18- CAP CULVERT SET BENCHMARK ADJUST SCALES ACCORDINGL' INVERTELE- --'----- pnopsRTYuws -- --- -- EASEMENT LINE TELEPHONE PEDESTAL / CABLE PEDESTAL [� ELECTRIC TRANSFORMER CMP CULVERT 0 , STORY HOME LOT 28 BLOCK 3JELECTRIC PEDESTAL FIRST FLOOR ANCHORAGE R.D. �� ELECTRIC METER UJI Lu 6D GAS METER "w WATER VALVE --w---w+— WATER MAIN LINE ---wE--- WATER SERVICE LINE IL uLEAwoor (D SEPTIC VENT �@ SEPTIC TANK � SEWER SERVICE � mx___ ___ --�---»-- LEACH FIELD r,-r-p-r`r1% TREE LINE --»---»-- WOOD FENCE TWO STOR YHOME � yx FLAG POLE 27 ANTENNA AL EET TITLE AERIAL IMAGE - USE FOR REFERENCE ONLY - PROPOSED NEW SYSTEM HAS NOT BEEN MARYJOHNSON SUPERIMPOSED ON THE IMAGE. AERIAL SHEET 2 OF 2 A RANKIN ROAD SCRIBED "X'CN C(,'N`CRE PAD __.... ..._....._.. ._..._ ...... ..........__.......... EL - 13'i.7 / BLOCK 3 LOT 1 e f... r^✓ 18' G p CULVERT INVER' CL a'= 9 BLOCK 3LOT 2 / ( JUDD DRIVE i 1J � e �1 t / r e I 1 1 1 e r / HOMES IN THIS SECTION OF THE NEIGHBORHOOD ARE SERVED WITH COMMUNITY WATER; THERE ARE NO WELLS IN THE VICINITY OF THE PROPOSED SEPTIC SYSTEM ON THE JOHNSON SITE. SCOPE OF WORK SUMMARY 1. INSTALL NEW SEPTIC SYSTEM TO REPLACE THE FAILED SYSTEM, 2. INSTALL NEW SEWER SERVICE LINE. 3. INSTALL NEW 1,500-GALLON DEEP -BURY SEPTIC TANK. 4. INSTALL NEW SEWER PIPING FROM THE SEPTIC TANK TO THE ABSORPTION TRENCHES. 5. INSTALL NEW DUAL DEEP -TRENCH ABSORPTION DRAINFIELD (PARALLEL SPLIT TRENCHES). 6, DECOMMISSION EXISTING SEPTIC TANK AND ABANDON EXISTING ABSORPTION TRENCH. 7. REPAIR DRIVEWAY AT DISTURBED/SETTLED AREA. 8. RESTORE FINAL GRADE, SITE DRESSING, AND LANDSCAPING TO ENSURE POSITIVE DRAINAGE. r r -r , 2 STORY FF=1523 SEWER SERVICE LINE INSTALLATION • INSTALL A NEW 4-INCH SCHEDULE 40 ABS SEWER SERVICE LINE FROM THE HOUSE TO THE SEPTIC TANK. • PROVIDE 4 INCHES OF CONTINUOUS BOARDSTOCK INSULATION OVER THE LINE; KEEP JOINTS TIGHT. • MAINTAIN UNIFORM SLOPE -2% (OR SEE CIVIL DESIGN) AND MINIMUM 4 FEET OF SOIL COVER ABOVE INSULATION. • CONNECT TO THE EXISTING HOUSE SEWER STUB -OUT USING WATERTIGHT, COMPATIBLE ABS FITTINGS. PLACE PIPE ON APPROVED BEDDING; REMOVE SOFT/ORGANIC SOILS. • BACKFILL WITH MATERIAL FREE OF LARGE ROCKS/FROZEN LUMPS; COMPACT IN UNIFORM LIFTS TO LIMIT SETTLEMENT. SEPTIC TANK INSTALLATION • INSTALL A 1,500-GALLON DEEP -BURY POLYETHYLENE SEPTIC TANK (GREER TANK) SUITABLE FOR DEEP BURIAL. • PLACE TANK ON A LEVEL, COMPACTED GRAVEL OR SAND BASE PER MANUFACTURER'S REQUIREMENTS. • INSTALL INLET/OUTLET BAFFLES AND RISERS TO GRADE WITH WATERTIGHT INSULATED LIDS. • INSTALL 4 INCHES OF BOARDSTOCK INSULATION OVER THE TANK; EXTEND MINIMUM OF 24 INCHES BEYOND TANK EDGES. • MAINTAIN A MINIMUM 4 FEET OF SOIL COVER ABOVE INSULATION. • COMPACT SOIL BENEATH AND AROUND INLET/OUTLET PENETRATIONS TO PREVENT SETTLEMENT. • INSULATE RISERS, LIDS, AND INSTALL FROST PLUGS. C S BLOCK 3LOT 28 f � r � � F y {z 1 I AIN NG, 44 All it 4" BLOCK 3 LOT 27 a 1 R BLOCK 3 LOT 25 t� 4 r MARY JOHNSON SITE PLAN M I 11. - 20' 0 10' 20' 40' WOMMITTI BLOCK 3 LOT 26 SEWER PIPING FROM TANK TO TRENCHES • INSTALL 44NCH SCHEDULE 40 ABS PIPING FROM THE SEPTIC TANK OUTLET TO EACH OF THE TWO DISTRIBUTION BOXES. • SET DISTRIBUTION BOXES LEVEL AND CENTERED BETWEEN LATERALS; ADJUST OUTLETS TO BALANCE FLOWS. • INSTALL 4 INCHES OF BOARDSTOCK INSULATION CONTINUOUSLY OVER THE PIPING; MAINTAIN MINIMUM 4 FEET OF SOIL COVER. • MAINTAIN CONTINUOUS POSITIVE SLOPE AND PROPER BEDDING/BACKFILL. DEEP -TRENCH DRAINFIELD INSTALLATION • CONSTRUCT TWO ABSORPTION TRENCHES, EACH 46 FEET LONG AND 3 FEET WIDE WITH 5 FEET EFFECTIVE GRAVEL DEPTH (920 SO FT TOTAL). • INSTALL EIGHT INFILTRATOR CHAMBERS PER TRENCH WITH ENDCAPS PER MANUFACTURER INSTRUCTIONS. (SPLIT ROWS) • INSTALL 4-INCH PERFORATED DISTRIBUTION PIPE BENEATH CHAMBERS FOR GRAVITY FLOW; ORIENT PERFORATIONS DOWNWARD. • COVER CHAMBERS WITH NON -WOVEN GEOTEXTILE. • INSTALL 4 INCHES OF BOARDSTOCK INSULATION ABOVE CHAMBERS. • BACKFILL TO PROVIDE MINIMUM 4 FEET OF SOIL COVER; COMPACT TO AVOID EXCESSIVE SETTLEMENT. • USE CLEAN, MOA-COMPLIANT COARSE -GRADED SEWER ROCK FOR TRENCH. • INSTALL DISTRIBUTION BOXES AT TRENCH MIDPOINTS; VERIFY EVEN FLOW TO EACH LEG OF THE SPLIT. • MAINTAIN DESIGNED ELEVATION DIFFERENCE BETWEEN TRENCHES DUE TO YARD SLOPE. ABANDONMENT OF EXISTING SYSTEM • DECOMMISSION THE EXISTING SEPTIC TANK PER MUNICIPAL AND STATE CODE. • PUMP OUT AND REMOVE CONTENTS PRIOR TO REMOVAL; REMOVE TANK FROM SITE, AS IT IS IN THE WAY. • FILL AND COMPACT THE EXCAVATION; BLEND FINAL GRADE WITH SURROUNDING YARD. • REMOVE ALL ABOVE -GRADE PIPING. • ABANDON THE EXISTING ABSORPTION TRENCH IN PLACE PER CODE. DRIVEWAY REPAIR • REPAIR APPROXIMATELY 5 FT x 5 FT ASPHALT AREA AT THE NORTH END OF THE EXISTING ABSORPTION TRENCH, • SAWCUT PERIMETER WITH CLEAN, STRAIGHT EDGES; REMOVE AND DISPOSE OF ASPHALT AND ANY LOOSE/CONTAMINATED BASE. • EXCAVATE TO -3 FEET BELOW GRADE; INSPECT FOR SOIL MIGRATIONNOIDS; DOCUMENT FINDINGS WITH PHOTOS AND FIELD NOTES; REMOVE UNSUITABLE SOILS. • COMPACT EXPOSED SUBGRADE USING A PLATE COMPACTOR OR JUMPING JACK UNTIL FIRM, NON -YIELDING; BACKFILL AND COMPACT TO 2 FEET BELOW FINISHED GRADE USING NATIVE/APPROVED FILL. • INSTALL 24 INCHES OF'/. -INCH MINUS GRAVEL IN TWO 12-INCH LIFTS; COMPACT EACH LIFT TO 95% MODIFIED PROCTOR OR REFUSAL. • INSTALL WOVEN GEOTEXTILE OVER THE COMPACTED BASE; OVERLAP 12-18 INCHES. • INSTALL 24 INCHES OF %-INCH MINUS LEVELING GRAVEL; COMPACT. • INSTALL 21NCHES COMPACTED HOT -MIX ASPHALT FLUSH WITH SURROUNDING SURFACE; COMPACT TO A SMOOTH, WELL -BONDED FINISH; SEAL EDGES TO EXISTING ASPHALT AND APPLY DRIVEWAY SEALER AS NEEDED. • BARRICADE THE PATCH FOR AT LEAST 24 HOURS; PREVENT TRAFFIC/LOADING DURING CURE. FINAL LANDSCAPING AND GRADING • COMPACT AND LEVEL ALL DISTURBED AREAS; BLEND YARD INTO DRIVEWAY EDGE. • APPLY GRASS SEED AND FERTILIZER WHERE APPROPRIATE; REMOVE ALL CONSTRUCTION DEBRIS. • CREATE A SLIGHT MOUND OVER TANK, TRENCHES, AND SERVICE LINE TO OFFSET SETTLEMENT. • ENSURE DRAINAGE FLOWS AWAY FROM STRUCTURES AND SEPTIC COMPONENTS; PREVENT PONDING. • IF WINTER CONDITIONS PREVENT COMPLETION, CONTRACTOR SHALL RETURN IN SPRING TO FINISH LANDSCAPING. Division of Environmental Health and Engineering 4500 Diplomacy Drive Anchorage, Alaska 99508 (907)7294600 p.«..... ..«..y 1 .: �'KURT DSAUERS :...w' �, FAF , 03M312026. moo, 84. 8 i, ii OFESSO ;0' 0 BAR IS ONE INCH ON ORIGINAL DRANNG, IF NOT �w aF-w t9pd3.0 O W W z Q z �U)a PLAN SET: AKA-23-ANC PROJ MGR: ML PROJENG: KS DRUMS ENG: - DRAWN BY: MY SHEET TITLE MARY JOHNSON SITE PLAN C-101 SHEET I OF 4 FILE: 1:27:41 PM 4 01 ANTH_ C TEST Hot-E E *2 NOVEME_R20 23 -11 r1i ANIT4C Slt,r AK — --------- --- GRAIN SIZE CLASSIFICATION 1 FIG, I L01 - FEi'Cla,41 THT FIX EA_ -Ev; Hw� THIS TEST HOLE WAS DUG AND LOCATED AT THE CENTER OF —]T THE PROPOSED FIRST TRENCH, BELOW THE SEPTIC 4 :TES TANK ON THE CIVIL DRAWING A M' MM EHOLE #3 L 8 8 .03 -022-03 MI l TIC EU t, SEE SI71,, C4 01 Wt—.Nl. —5 7' sc*4o TV" 7 _x IM=a Municipality of Anchorage ��ANTI HOLE.TMt, Soils Log - Percolation Test k -7- 2- GC Clayey gra, rell SC - Clayey 3-.Sad& Rock a SC`Clayey..... LL-LL S, IZ tU 0 B 0 H ft�-StwT ATaRsiYrJud 0,­SU, ciNalerse e, D:,plIa syll­ . WIR Rcp,,it Pr, riv PROF r ILA. AS —BUILT 9 a I ,I z ANTFIC SOIL TEST HOLE LOG TEST HOLE #41 =1 ipl­' 0, 1 It 4� MARY JOHNSON CHUGIAK 22723 JUDD DRIVE PARTLY CLOUDY, 64 21Tlirll , rLT ellg Aw" r, 0 CHRISTIAN K, RALPH S. 711V2025 STEVEN G., LUCAS 8, 41-61 OG 1,54LIGHT BROWN, SIL- -TY LOAM SLO EM, GRAY. SILTY GRAVEL - il�:.'.2" � - "II.IlIll'.1111.11.1.11,11.11,11-1 -1.11.11.1111, - 12"DIAW GRAVEL, SILTY- GRAY NOTES: 1 . ANTHC CONFIRMED THE SOIL TYPE, PERCOLATION RATE (USED ORIGINAL FROM 8/22/03 AS IT WAS MORE CONSERVATIVE), & RULED OUT ANY IMPERMEABLE LAYER AND GROUNDWATER, TEST HOLE LOG, PHOTO, AND PERCOLATION TEST PERFORMED ON 5/20/2024, 2. EXISTING SEPTIC SYSTEM TEST HOLE LOG & PERCOLATION TEST TO BE UTILIZED FOR DESIGN OF NEW SEPTIC SYSTEM FROM 8/22/2003. THE EXISTING SYSTEM OUTLINED A SECOND TRENCH LOCATION FOR A REPLACEMENT OF THE 2003 INSTALLED SYSTEM, SEE AS -BUILT PLAN "ALT. SITE" BELOW EXISTING TRENCH. A­q A -1—p P 1 rcra I, 11�71'14 — 211 a 28 AS-BU LT ELA LOT 28SLOCK 3, KNIK ViEW ESTATES SUBDWISION Division of Environmental Health and Engineering 4500 Diplomacy Drive Anchorage, Alaska 99608 (907) 729-3600 BAR ISO INCH ON ORIGINAL DRAWING, IF NOT PROJ MGR: ML PROJ ENG: KS DRUMS ENG: - DRAWN BY: MY SHEET TITLE WARY JOHNSON SOI AND AS-BUILTS C-1 02 SHEET 2 OF 4 2026- D SIZE TITLESLOCK VERSION: V10 ABSORPTION FIELD DESIGN CRITERIA • 4 BEDROOM HOUSE. • DESIGN FLOW RATE: 150 GAL/DAY/BEDROOM. • TOTAL DESIGN FLOW: 4 BR' 150 GAUDAY/BR = 600 GAL/DAY. • THERE WERE 4 TEST HOLES USED IN THIS DESIGN. WE ARE CALLING THEM: - MM&M TH#3 - 8-22-2003 (THIS WAS A SERIES OF 3 TEST HOLES FROM THE ORIGINAL SITE DEVELOPMENT. #1 AND #2 ARE IN THE BACKYARD AND #3 IS IN THE FRONT YARD, WHERE THE ORIGINAL SYSTEM WOULD BE BUILT.) • THIS TEST HOLE IS BEING USED TO DETERMINE THE ABSENCE OF BEDROCK DOWN TO 18FT. THIS TEST HOLE IS LOCATED NEAR THE CENTER OF OUR PROPOSED TRENCH #2. THE 18FT OFFSET WAS THEN TRANSFERRED TO ALL POINTS OF THE DEEP TRENCH, WHICH RESULTED IN REDUCING THE EFFECTIVE DEPTH OF THE SEWER ROCK FROM 8FT TO 5FT, IN ORDER TO PROVIDE A 6FT VERTICAL SEPARATION DISTANCE FROM THE BOTTOM OF HOLE AND ASSUMED BEDROCK LAYER. THERE WERE NO WELLS IN THE VICINITY TO VERIFY OR DISPROVE THE EXISTENCE OF BEDROCK. • PERCOLATION TEST FROM MM&M, 8/22/2003 OF 15 MINAN WILL BE USED AS IT IS MORE CONSERVATIVE COMPARED TO THE 5/20/24 TEST, AND THIS TEST WAS RUN BETWEEN 7-8FT BG. • ANTHC TH#2-11/2023 • THIS TEST HOLE WAS WHERE THE SOIL SAMPLE THAT WAS SENT FOR ANALYSIS CAME FROM. THIS IS THE SHANNON AND WILSON DECEMBER 2023 SAMPLE. ALL OTHER DATA RELATED TO THIS TEST HOLE HAS BEEN LOST (OR MISFILED). • SOIL AT 4FT IS: SILTY SAND WITH GRAVEL - USCS CLASSIFICATION: SM. • SOIL AT 8FT IS: SILTY GRAVEL WITH SAND - USCS CLASSIFICATION: GM. • ANTHC TH#3 - 5-20-24 • THE PERCOLATION TEST WAS 4.0 MIN/INCH ON 5-20-24. IT WAS PERFORMED AT 4 FT BELOW GRADE BY ANTHC, SEE ATTACHED SOILS LOG - PERCOLATION TEST SIGNED ON 5/29124. HOWEVER, THE PERCOLATION RATE THAT WE ARE USING IS THE MORE SECTION VIEW TRENCH #1 (EASTERN TRENCH- CLOSER TO HOUSE) CONSERVATIVE ONE FROM THE 8-22-23 MM&M TEST HOLE #3. • ANTHC TH#4 - 7-11-25 • THE ANTHC TEST HOLE # 3 SHOWED SOME SIGNS OF GROUNDWATER TRICKLING INTO THE TEST HOLE. IT WAS ASSUMED TO BE EFFLUENT THAT WAS COMING FROM THE EXISTING TRENCHES, AS THIS TEST HOLE WAS BELOW THE TRENCHES. THE ANTHC TEST HOLE #4 WAS DUG ADJACENT TO THE FIELD, AND NOT DOWN -GRADIENT OF THE EXISTING TRENCH, IN ORDER TO CHECK FOR GROUNDWATER. NO GROUNDWATER WAS FOUND, AND THE ASSUMPTION VERIFIED THAT THE LIQUID SHOWING UP IN TH#3 WAS INDEED FROM THE EXISTING TRENCH. BUT ANTHC TH#4 WAS USED TO RULE OUT GROUNDWATER. • THE SOIL ABSORPTION SYSTEM WILL BE DESIGNED AS A DEEP TRENCH SYSTEM. • EG OF MM&M TEST HOLE #3 IS 14T ABOVE SEA LEVEL AND DUG TO 18FT. WHICH IS ALSO THE LOCATION OF TRENCH #1. 147' EG - 18' BG + V VSD = 135'. THIS IS THE MAXIMUM DEPTH ALLOWED FOR THE SEWER ROCK FOR THIS TRENCH. WE WERE NOT GOING TO BE ABLE TO USE AN 8FT EFFECTIVE TRENCH HERE AS ORIGINALLY PLANNED, AND THEREBY REDUCED THE EFFECTIVE SEWER ROCK TO 5FT. THE BOTTOM OF THIS 5FT EFFECTIVE TRENCH WILL BE SET TO 136', PROVIDING MORE THAN 6' OF VERTICAL SEPARATION DISTANCE (ACTUALLY 7FT ABOVE THE ASSUMED IMPERMEABLE LAYER). (SEE BELOW FOR TRENCH #2 ELEVATIONS.) • TRENCH LENGTH CALCULATIONS BASED ON A 5FT EFFECTIVE DEPTH IS: • 5FT EFFECTIVE • 3FT TRENCH WIDTH • LOADING RATE IS 0.8 GAUDAY/SQ FT • DESIGN FOR AN ABSORPTION RATE OF: 0.8 GALA)AY/SQ FT - PER MUNI AMC 15.65.355 CODE - TABLE 6, UNDER SECTION G - DISPOSAL FIELD SIZING - FOR 15 MIN/INCH PERCOLATION RATE AND HAVING A SOIL TYPE OF SILTY GRAVEL WITH SAND, USCS = GW, AT THE 8FT BG SOIL LAYER. • (NOTE: THIS IS THE INITIAL DESIGN LOADING RATE TO START DESIGN. THE FINAL LOADING RATE BASED ON FINAL DESIGN PARAMETERS WILL BE SECTION VIEW TRENCH #2 (WESTERN TRENCH - CLOSEST TO STREET) LOWER.) • AVERAGE DAILY FLOW = 600 GAL/DAY • 600 GAUDAY / 0.8 GAUDAY/SQ FT = 750 SO FT (MINIMUM TREATMENT AREA) • WHICH RESULTS IN A LENGTH OF 750 SO FT / (5" 2 WALLS) = 75FT • SPLIT TRENCH IN TWO TO FIT IN YARD = 75' / 2 TRENCHES = 37.5FT EACH TRENCH. ROUND TO 40FT TO CALCULATE NUMBER OF QUICK5 INFILTRATOR CHAMBERS OVER PERFORATED PIPE. • 40' / 5' PER CHAMBER = 8 CHAMBERS PER TRENCH • TRENCH TO BE CENTER -FED DUE TO LOCATION OF SEPTIC TANK, AND CLEARANCE BETWEEN DRIVEWAY AND OUTSIDE PROPERTY LINE. A D-BOX WILL BE USED TO SPLIT THE FLOWS IN EACH TRENCH. (THE YARD SLOPES DOWN TO THE WEST AND THE TRENCHES WILL DROP IN ELEVATIONS TO FOLLOW SLOPE OF THE YARD AND PROVIDE 1OFT OF HORIZONTAL SEPARATION (2X EFFECTIVE SEWER ROCK DEPTH (OF 5FT) = 10FT) • THIS SPITS THE TRENCH INTO 2 SECTIONS. EACH SECTION WILL NEED END -CAPS ON THE CHAMBERS, WHICH ADDS 4FT TO THE TRENCH (12" PER END -CAP), AND WE WILL PROVIDE 2FT OF SPACE TO INSTALL THE D-BOX (WHICH IS TIGHT). THIS RESULTS IN A TRENCH LENGTH OF 46FT/EACH. • IF WE BACK -CALCULATE THIS NEW TRENCH LENGTH. THEN 467TRENCH' 2 TRENCHES = 92FT OF TRENCH. 92FT " (5FT ` 2 WALLS) = 920 SO FT. 600 GAL/DAY / 920 SO FT = 0.652 GAUDAY/SQ FT. THIS IS A BETTER LOADING RATE, AND MAKES THE SYSTEM A LITTLE MORE CONSERVATIVE FOR THE 15 MINANCH PERC RATE (WHICH IS THE THRESHOLD FOR A 0.8 LOADING RATE) AND THE REPLACEMENT OF A 23-YEAR OLD FAILED SYSTEM. • THE DEEP TRENCH WILL HAVE A 5FT EFFECTIVE DEPTH, 3FT WIDE, AND HAVE TWO, 46FT LONGITRENCHES IN PARALLEL, SEPARATED BY 1OFT. - CHECK DEPTH OF TRENCH #2 (ELEVATION). THE 18FT OFFSET FOR TRENCH #2 IS: 14TEG - 18' BG + 6' VSD = 131' (MAXIMUM DEPTH). THE BOTTOM ELEVATION OF TRENCH #2 IS AT 134', PROVIDING 9FT ABOVE ANY ASSUMED BEDROCK LAYER. • THE 4" PERFORATED SCH 40 PVC DISTRIBUTION PIPING IN THE ABSORPTION FIELD WILL BE COVERED AND PROTECTED WITH THE USE OF INFILTRATOR QUICK5 CHAMBERS, THAT WILL PROTECT THE DISCHARGE PIPING FROM CLOGGING AND PROVIDE AVOID SPACE THAT CAN HANDLE SEVERE PEAK FLOW EVENTS AND HELPS WITH THE DISTRIBUTION OF WASTEWATER. IT ALSO EXTENDS THE LIFE OF THE DRAINFIELD. THEY SYSTEM WILL BE COVERED WITH 4" OF RIGID BOARDSTOCK INSULATION. • SEPTIC TANK SIZING: MUNI REQUIREMENT FOR 4 BEDROOM HOME IS A 1,000 GAL, PLUS 250 GAL FOR EACH BEDROOM OVER 3, WHICH WOULD BE 1,250 GALLONS. UPSIZE AND USE A DEEP -BURY POLYETHENE SEPTIC TANK, 1,500 GALLON SEPTIC TANK, MADE BY GREER TANK. Division of Environmental Health and Engineering 4500 Diplomacy Drive Anchorage, Alaska 99606 (907( 7293600 t%�%4` �P�� O0 F qto i........ ................ 0 R„ HURT -10280 RS �w � � J„ CE-1028i1 �jt�P,pF.0470712026 �1 � pROFESSIONP� i'•' 0 1., BAR IS ONE INCH ON ORIGINAL DRAWING, IF NOT ADJUST SCALES ACCORDINGLY 160' 160' 160' 160' HOUSE HOUSE FF=152.3' FF=152.3' 150, 3 FG EG _ 150• 150, 150, 1_ L_�. _ _e r ✓- 3 DRVEWAY 1 � _r L = EG � 4 i_._ RIGID BOARDSTOCK 140 i r s _ co 140' 140 - F i _ NON WOVEN GEOTEXTILE FABRIC INFILTRATOR QUICK5 �'•-46 OVER 4' PERFORATED PIPING r ao �- ' I 130' r- 9 130' 130 _ 130 .� + : I BOH i ..� : PLAN SET: AKA-23-ANC .'.._.1 PROD MGR: MIL BOH - ASSU[v1ED BED - ROCK LAYER OFFSET FROM TEST HOLE - # __y — - 1. BOH = ASSUMED BEDROCK LAYER OFFSET FROM TEST HOL E - PROD ENG: KS 120' b> m o o v "v &4 -ry iG is En m o o E0 Eo v -v, 120' 120' 7n m N m m io in in 120' DRUMS ENG: - C'1 M N N (-1 (h N) Ni N 6 (p (6 v c ? v (6 (6 r O 00 ap P v v N o o O O v v v v c o c v r` i F v b in N v v DRAWN BY: MY SHEET TITLE c70" 00 00 00 00 00 0(D bb d0 bca �ii cam (�ca �c7 W LL W w W LL W LL W LL W LL W LL W LL W w W LL W LL W LL W LL W u. W LL W LL W LL W LL W LL W u_ W LL W LL 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 MARYJOHNSON DESIGN NOTES JOHNSON SECTIONS _MARY C-103 r' =10' SHEET 3 OF 4 SR: JEELLORIN PRODUCT: Autodesk Civil 3D 2026 - Engi.h FILE: P:V+nchorage\AKA-23-ANC\MJohnson\CAD\CivihANC-C-STSITE_Wohnson.dwg LAYOUT: NOTE PRINTED: 4172026 12:47:16 PM 9 OF 18 TOTALSHE D SIZE TITLESLOCK VERSION: 0) B A TRENCH TO BE LEVELED TO FINAL GRADE AND BLENDED DOWN SURVEY CONFIRMED NO RESIDENTIAL THE YARD TO MATCH THE DRAINAGE LINE ALONG THE ROAD, AND THIS HOME IS ON A WATER SERVICE LINE i ALSO BLENDED DOWN TO THE DRIVEWAY. THIS WILL NEED TO BE THERE IS NO WELL ON THIS PROPERTY - _ ' COMMERCIAL WELLS IN THE NEIGHBORHOOD. Y; L } � ALL HOMES ARE ON MUNICIPALITY WATER SYSTEM. FIELD WORKED, BUT THE SLOPES SHOULD BE AROUND 3:1 1. f,�."".•: DECK � { - I CURB STOP WSL_._.- i VALVE ON WSL -DECK .5: DRIVEWAY AVOID DRIVEWAY -61 f REPAIR J? FLAGPOLE IN ", DRIVEWAY 2 STORY z THIS AREA o o ' SEE NOTES) 4 BEDROOM NEEDS TO BE ^' FF = 152.3' REMOVED SEE i HOMEOWNER ANTHC, FOR NEW LOCATION TH #2 A 11/23 V; _ ' O , a\ i 1 DC0 DECK CONNECT TO EXISTING k I , + ," SEWER LINE AND INSTALL �� NEW DOUBLE CLEANOUT u 4 I 10'-1/4„ 0 �tia ) , tp'! _r " _ - — „ u, �: �e � EXISTING WOOD FENCE 1 (�, DB 01 MM&M 1 s 3 \ f 1 PUMP OUT EXISTING SEPTIC TANK, REMOVE SEPTIC > j DB 02 TH #3 ° 3 7 TANK, AND DISPOSE OF SEPTIC TANK PER MUNI ----- 6 11 8/29 ? , r DECOMMISSIONING REGULATIONS AMC 15.65.205(G) 7 + 10 \ T ` o, I' T 60 10+40 ,♦ r ST 01 r e �,. II 1 H8 01 Y 1 \\ / O AN THC EXISTING 71 TH #3 I _ WOOD FENCE 1 5/20/24I _ I' '� ; EXISTING TH . ,. � i yj� DRAINNELD )�ANTHC TRENCHTRENCH 1 QUICK 5 DRAINFIELD TH #4 J r I I 2 ROWS x 8 CHAMBERS SHED 7 I .ES .J . 9 I (16 CHAMBERS) 46FT EACH TRENCH EFFECTIVE DEPTH ' Z 3.0 ROCK OF TRENCH - 5' DEEP x T WIDE x 46LONG r � AVOID PROPERTY LINE HOUSE CONTRACTOR AS-BUILTS: COVER OVER SEWER SERVICE LINE: SEPTIC TANK INVERT IN: SEPTIC TANK INVERT OUT: COVER OVER SEPTIC TANK: COVER OVER CHAMBERS/ DRAINFIELD: IMPORTANT III SEE DETAIL FOR SEPTIC SYSTEM INSTALLATION AND MATERIALS 160' 150, FG ZO P, Q 140' 3 E1 ' r -j- E S W_�. -.. C 130' 160' HOUSE FF=152.3' EG 150, SS 0i- -t SS 02 i m 1 � I- 140' D 1 4r1— t t I z ;..f. .... ;) _ O ASSUMED IL - Z BASED ON BOH - ... 130' 120' '''t 1 1 t € I 1 i r � 1 I i O i"i zQv W 60 1- O 1ppVpp 6 R 7 V 06 C W W W W W lL LL' W u- LL LD W Ill (9 W u' U W 0+80 0+70 0+60 0+50 0+40 0+30 0+20 0+10 0;. n MARY JOHNSON DESIGN PLAN NI -0+10 120' -- - English FILE: P:\Anchorage\AKA-23-ANC\MJohmmkCAD\CiOtANC-C-STSITE_Mjohmon.dg LAYOUT: DSGN PRINTED: 40202612:47:17 PM 0 10, 20' SWING TIE TABLE ID ID DESC DSGN AS I ID ID DESC DSGN AB O O CLEANOUT 10' UB O DF PORT III 57' f� CLEANOUT 10' O DF PORT IV 53' o O ST RISER I 20' O (DI DF PORT IV 57' ST RISER 1 17' DF PORT V 6T ST RISER 11 23' �B DF PORT V 66' O ST RISER II 20' O O DF PORT VI 59' l O DF PORT 1 31' O O DF PORT VI 54' 4� DF PORT 1 43' IS DF PORT VII 42' �A OF PORT II 45' 10 OF PORT VII 44' OB O DF PORT II 57' O 11 DF PORT VIII 40' O O DF PORT III 52' O 11 OF PORT VIII 58' SEWER SERVICE ID START END LENGTH SLOPE DESCRIPTION SS 01 0+00 0+03 3 LF 2.0 % 4" SCH 40 ABS W14" BOARD INSULATION SS 02 0+03 0+19 16 LF 2.0 % 4" SCH 40 ABS W/ 4" BOARD INSULATION SS 03 0+27 0+34 7 LF 9.1% 4" SCH 40 ABS W14" BOARD INSULATION SS 04 0+34 0+50 16 LF 9.4% 4" SCH 40 ABS W14" BOARD INSULATION SS 05 0+50 0+63 13 LF 15.6% 4" SCH 40 ABS W/ 4" BOARD INSULATION MAJOR STRUCTURES ID STATION DESCRIPTION DCO 01 0+02.7 DOUBLE CLEANOUT ST 01 0+22.8 1,500 GALLON POLYETHENE GREER DEEP BURY SEPTIC TANK HB 01 0+33.9 4" 45' BEND DB 01 0+50.1 TRENCH #1 DISTRIBUTION BOX DB 02 0+62.9 TRENCH #2 DISTRIBUTION BOX EXCAVATION & BACKFILL VOLUME / ELEVATION TABLE DESCRIPTION ELEVATION (ft) VOLUME (yd') TOTAL EXCAVATION (CUT) - 326 MOUND (FG) 143.6 8 DA SEPTIC TANK BEDDING 137 8 SEPTIC TANK 138 15 DRAINFIELD CHAMBERS 139 AND 141 6 ❑D DRAINFIELD ROCK 134 AND 136 52 NET SOIL = FG - SYSTEM COMPONENTS -13 (+) RESULT = SOIL TO BRING IN I I-) RESULT = HAVE EXCESS SOIL VOLUMES ARE ESTIMATED; EXPANSION / COMPACTION NOT INCLUDED Division of Environmental Health and Engineering 4500 Diplomacy Drive Anchorage, Alaska 99508 (907)729.3600 ++aaaaaa .i �Pt OF q��s�♦, i #•' 4911 .....:o I« ............. p ,.» KURSAUERS .. z O T D CE-10280 �I F9Fo 04/07/2026 �a 4 0 1" BAR IS ONE INCH ON ORIGINAL DRAWING, IF NOT ADJUST SCALES ACCORDINGLY >- YWU Q F W UJOQ� LLI O W 0 W LL W ZU� Q a PLAN SET: AKA-23-ANC PROJ MGR: MIL PROJENG: KS DRUMS ENG: - DRAWN BY: MY SHEET TITLE MARYJOHNSON DESIGN PLAN C-104 SHEET 4 OF 4 10 OF 18 TOTALS; Municipality of Anchorage Development Services Department On -Site Water and Wastewater Section r] 4700 Elmore St. P.O. Box 196650 Anchorage, AK 99519-6650 www.muni.org/onsite (907)343-7904 ANTHIC EST 9 TH43 Soils Log - Percolation Test (ENGINEER'S SEAL) co P�� OFglgs��`, 49m :* �i ,0.......... p 00 00 P o ; .. KURT D. SAUERS j0 o'i • CE-10280 Performed For: Mary Johnson, 22723 Judd Dr., Chugiak, AK 99567 Date Performed: 05/20/2024 Legal Description: L28 B3 Knik View Estates Township, Range, Section: Chugiak, AK Slope Site Plan Depth (F M 2- GC Clayey 3- gra el 4- 5- SC Clayey 6- Sa d & Rock 7- 8- SC Clayey Y y WAS GROUND WATER 9- Sad ENCOUNTERED? Yes 10-. 11- 12- 13- 14- 15- 16- 17- 18- 19- 20- s �PAHHA\/ IF YES, AT WHAT DEPTH? 8-9 feet f 10 f �7 DBOHepth to Water After P Monitoring? 7.583' E Date: 5/28/2024 V, .r �f /r Readingu~ .m Date Gross Time Net Time Depth to Water Net Drop #1 5/20 11:20 23.18 4.5 FT 6" #2 5/20 11:45 10 4.5 FT 3" #3 5/20 11:55 10 4.5 FT 2 3/4" #4 5/20 12:06 10 4.5 FT 2 3/4" #5 5/20 12:17 10 4.5 FT 2 3/4" #6 5/20 12:28 10 4.5 FT 2 3/4" #7 5/20 12:39 10 4.5 FT 2 1 /2" PERCOLATION RATE � (minutes/inch) PERC HOLE DIAMETER 6 TEST RUN BETWEEN FT AND 5 FT COMMENTS While taking pictures of depth, we encountered a light trickle of ground water coming in from the house direction not enough to fill the hole, red clay was encountered at 8 feet, then gray This is test hol&*2, Test h0X#1 nothing was documented but soil samples were taken, when we re -used the water monitoring tube we smelled wastewater smell and the bottom of the tube was wet #3 #2 PERFORMED BY: Christian Keel, ANTHC DEHE I Russell Snyder, ANTHC DEHE CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: 5/20/2024 Municipality of Anchorage Page 1 of 3 Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street P.O. Box 196650 Anchorage. AK 99519-6650 www.ci.anchorage.ak.us (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT Permit Number: SW030089 PID Number: 015.043-30 Nef18 MM&M Contracting Wastewater System: New Address: P.O. Box 670495 Chu iak AK 99567 ABSORPTION FIELD Phone: 688.1236 Number of Bedrooms: Four 4 Deep Trench LEGAL DESCRIPTION Sal Rating: Total Depth it=ongtnal grade: •8 GPD/F0 11.5 Ft. Block: Lot: Subdivision: Depth to pipe bottom from onginal grade: Gravel depth beneath pope: 3 28 Knik View Estates 3.5 Ft. 8 FL Township: Range: Section: Fill added above original grade: Gravel Length: 0.1 Ft. 47 Ft. Well: Class A Well Gravel width: 3-4 Number of lines 1 Distance between lines: Ft. FL Classification (Private. A. B. C) Total Depth: Cased to: Total absorption area: Pipe Material: Ft. I Ft. 752 Fe ASTM 3034 PVC Driller. Date Drilled: Static Water Level: Installer: DateInstalled: FL MM&M Contracting 1 8122.2512003 Yield: Puny Set at: I Casing Height Above Ground: TANK GPM Ft. Ft. SEPARATION DISTANCES ® Septic ❑ Holding ❑ S.T.E.P. ❑ Other: To Septic Absorption Lift Holding lublictPrivate J `°` ` y 'A wbons. From Tank Field Station Tank Sewer Line Anchorage Tank 1250 Well >200' >200' NIA NIA NIA leria: Steel Nurnoer of Cornpannts: Two (2) Surface Water >100' >100' NIA NIA LIFT STATION — NONE ON LOT Lot tine >5' >10' NIA NIA t. Gat. o:a J . Foundabon >5' >10' NIA NIA urpon eve a. umpo ve at. t water warms. In. In in cunan None Noted Pump Make 8 Model Electrical Inspections performed by: Dram Reraft: BENCH MARK ora.on and Dewip4on. Garage Slab. sume peva ion. 100.0 Ft. Engineer's Stamp OF Inspections performed by: MEA Dates: let 8124103' a9th .�...f;� 2nd 8125103 i-'...1 r Department of Health and Human Services approval r T = Ia1CHAEL E. ANDERSON 'C � '. in . : �= Reviewed and approved by: � Date: _ 03 ♦ No. CE -4381 Ar OJjF.dir ��� fp.... • (Rev 10") M\0,- Municipality of Anchorage Page 2 of 3 DEVEOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK. 99519-6655 - 343-7904 On -Site Wastewater Disposal System or Well Inspection Report Permit Number: SW030089 PID No. 015-043-30 A 8 51 10.0 17.8 52 17.9 15.0 C4 35.8 46.7 M1 36.8 45.1 CS 38.4 46.7 WEST 253.53 / C4 % Fou Bedroom 28 Home / S2` a /Alt. Sile TH3 51 A a /� TH2 M1 C5 TH1 Q WEST 278.08 AS -BUILT PLAN SCALE 1• • W 4 LOT 28, BLOCK 3, KNIK VIEW ESTATES SUBDIVISION MICHAEL E. ANDERSON . No. CE4381 Municipality of Anchorage DEVEOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK. 99519-6655 - 343-7904 On -Site Wastewater Disposal System or Well Inspection Report Permit Number: SW030089 N 1.250 CU UU Page 3 of 3 PID No. 015-043-30 Cn U U H X 2 er S U 49th' PROFILE AS -BUILT t MICHAEL E ANDERSON .�� f�, . No. cE-438I Scale: 1' = 19 ��.=�c7 ................... F 1 2 3 4 5 6 IZ 1 14 15 16 17 6 - MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT 4700 SOUTH BRAGAW STREET ANCHORAGE, ALASKA 99519-6650 SOILS LOG - PERCOLATION TEST PERFORMED FOR: MM&M Contracting DATE PERFORMED: 8/22/200 LEGAL DESCRIPTION: Lot 28 Block 3 Knik View Estates Subdivision (�j� TEST HOLE # 3 SLOPE SITE PLAN II I I I I I II OG/OLPROJECT # I I s a: • •, *4.• • Silty Gravel "•: a W/Sand Clusters GM WAS GROUNDWATER • • ENCOUNTERED? a: GROSS TIME NET TIME DEPTH OF WATER •a ' Start 8/22 2:05 8.62" 1 2:35 30 6.12" 2" echarge 2:36 9.25" aW.• 3:06 30 7.25" 2" Recharge •. , �� E 3 3:37 '° BOH @ 18' IF YES, WHAT DEPTH? zoi DEPTH OF WATER None AFTER MONITORING: DATE: 8/29/2003 S L 0 P E SEE SITE PLAN SEE SITE PLAN READING DATE GROSS TIME NET TIME DEPTH OF WATER NET DROP Start 8/22 2:05 8.62" 1 2:35 30 6.12" 2" echarge 2:36 9.25" 2 3:06 30 7.25" 2" Recharge 3:07 9" 3 3:37 30 7" 2" PERC RATE: 15 MIN./INCH PERC. HOLE DIAMETER: 6" TEST RUN BETWEEN 7.0 FT. AND 8.0 T. COMMENTS: Test Hole Pre Soaked Prior to Test. TEST PERFORMED BY: M. ANDERSON I, MICHAEL E. ANDERSON. CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES ON THIS DATE: 11/6/2003 MUNICIPALITY OF ANCHORAGE Development Services Department On -Site Water& Wastewater Program 4700 South Bragaw Street P.O. Box 196650, Anchorage, AK 99519-6650 (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM PERMIT Initial Permit Number: SW030089 TLegal Description: Knik View Estates Block 3 Lot 28 Design Engineer: 0014 Anderson Engineering Owner Name: MM&M Contracting Owner Address: PO Box 670495 Anchorage , A 99567 - This permit is for the construction of. r✓ Disposal Field 2✓ Septic Tank All construction must be in accordance with: 1. The attached approved design. ILIA I O Nil, < I/. 03 (�,3b_60 Date Issued: Apr 17, 2003 Expiration Date: Apr 16, 2004 Parcel ID: 051-043-30 Site Address: NHN Judd Cir Lot Size: 24188 SO. FT. Total Bedrooms: 4 Permit Bedrooms: 4 Holding Tank F� Privy Ej Private Well ❑ Water Storage 2. All requirements specified in Anchorage Municipal Code Chapters 15.55 and 15.65 and the State of Alaska Wastewater Disposal Regulations (18AAC72 ) and Drinking Water Regulations ( 18AAC80 ). 3, The engineer must notify DSD at least 2 hours prior to each inspection. Provide notification by calling (907) 343-7904 ( 24 hours ). ( Not required for a Water Supply Permit only ). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must be either. A. Open and closed on the same day. B. Covered, sealed, and heated to prevent freezing. —x-03 Ocr.tiy 7`�/� �. ,xvv,:t-� systt.� to O ty e.- TCf S 7`,. 7r r on Received By: Issued By: flcda Date:ta�� / - 0- Z� Date: I / -7103 Municipality of Anchorage Development Services'Department'�, Building Safety Division On -Site Water and Wastewater Program 4700 South Bragaw St. P.O. Box 196650 Anchorage, AK 99519-6650 www.cl.anchorage.ak.us (907)343-7904 ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. Permit Number SW 030089 Property owner(s)) MM&M Contracting Day phone 688-1236 Mailing address (1) P.O. Box 670495 Anchorage AK 99567 Mailing address (2) Zip Code Legal description (Lot, Block & Sub'd.) Lot 28, Block 3, Knik View Estates Subdivision Legal description (Section, Township & Range) Lot Size ,;Z,NI2q Acres 0q.FL THIS APPLICATION IS FOR: Number of Bedrooms Four (4) Sewer Only ® Well Only ❑ Sewer and Well ❑ Water Storage ❑ Sewer Upgrade ❑ THIS PROPERTY CONTAINS: Hot Tub ❑ Jacuzzi ❑ Swimming Pool ❑ Water Softening Unit ❑ Therapy Pool ❑ I certify that the above information is correct. I further certify that this application is being made for a Single Family Dwelling and is in accordance with applicable Municipal Codes. n1'L„G F_ (Signature of property owner or authorized agent) Io Permit Fees: 'q0D Waiver Fees: Date of Payment: Date of Payment: Receipt Number: 337Y6 Receipt Number: (Rev. 12/00) ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 522-6779 (FAX) April 14, 2003 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 28, Block 3, Knik View EstatesSubdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 28, Block 3, Knik View Estates Subdivision intends to construct a four- bedroom home on the lot. We are therefore requesting a permit be issued for the construction of a new septic system to serve the home. The subdivision is currently served by the Municipal water system. The attached Site Plan and backup documentation identify the location and configuration of the new septic system and alternate site and the parameters used in the design. Also identified on the plans are the test hole locations and the water service lines and septic systems on the surrounding lots. Drainage arrows and contours are shown indicating the current drainage patterns. The drainage patterns will be maintained after construction. The test holes placed near the location of the proposed absorption trench indicated silty gravel with varying amounts of sand and a percolation rate of 12 minutes per inch. No ground water was found during placement of the test holes and none was noted during the monitoring period. We are therefore proposing to place a 1,250 gallon septic tank and a new 54' long by 3' wide by 7' effective depth absorption trench. The total depth of the trench will be 10' below the surface with the distribution pipe at 3' below the surface. Sufficient fill will be placed to prevent freezing of either the septic tank or the absorption trench. The ground surface on the lot slopes as shown on the site plan from south to north at varying slopes. The absorption trench will be constructed parallel with the slope as much as possible in conformance with Municipal requirements. All components of the new septic system will be constructed a minimum of 100' from any surface water and wells in the area. If the system is constructed in accordance with our design the following statements apply: 1. The system, if constructed as designed, will have no adverse impact on the wells Lot 28, Block 3, Knik View Estates April 14, 2003 Page Two in the area or those to be constructed in the future. 2. The system, if constructed as designed, will have no adverse impact on existing septic systems in the area or those to be constructed in the future. 3. The system, if constructed as designed, will have no adverse impact on reserve space, either surface or subsurface, on any lots located in the area. 4. The system, if constructed as designed, will have no adverse impact on drainage patterns in the area. The current drainage pattern will be maintained. Sincerely, :E• Michael E. Anderson, P.E. Attachments -'�),.- L9• : 49th WD-AEL E. ANOERSC% No. CE -4391 . fA�F SS Im 1 m RANKIN r j 29 28 f77 � �s yo �.t arA»y.rvr. / •// .(�`ro if 27 r _ r �.. isles _ JUDD^ Circle�s 22 26 4P 25 3 OF ••,. .• PSE ............ ^( AREA MAP 4t. .. 49th iyh..:............. SCALE 1" C 100' I�6, MICHAEL E ANDIRSON 1. �l ; No. CE MI �# •4 1��ES5���� o� WEST 253.53 YJ ,Q ` 4Valer 28 Cinee`Y��' i� 5d, \St 54' Long x 3' Wide o i�� x 7' Effective Depth a\ r Four 1.250 Gallon Absorption Trench \a O to Bedroom Septic Tank a C:) Home Alternate Site ® TH 2 C) 15 ® TH 1 .o WEST 278.08 OF SITE PLAN 4 h :., ............._.._ :.._ ............... _........... ................ .. SCALE 1" = 50' #)0-0. M�LE.ANDERSON l; •�; No. cE4xi e�i p+ LOT 28, BLOCK 3, KNIK VIEW ESTATES SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Four Bedroom Home Deep Trench System Pere. Rate: 12 Min./Inch 1,250 Gallon Septic Tank Avg. Application Rate: .8 GPD/SF 7' Drain Field Rock 4 Bedrooms X 150 GPD /..8 GPD/SF = 750 SF of Absorption Area 750 SF/14 SF/LF = 53.6 LF Trench Length Therefore: Construct an Absorption Trench 54' in Length by 3' Wide with 7' of Drainfield Rock Beneath the Distribution Lateral. Distribution Lateral to Be Placed 3' Below Existing Ground . Total Depth of Each Trench to Be 10' Below Existing Surface. Cover Over Septic Tank a Minimum of 4' or 2" of Insulation and 2' of Cover. Cover Over Trench 3'. Ratural• Backfill 2'6" ' Geoteztile . Fabric 6" 710"�orated.PVC Schedule 40 " Drainfield Rock 00 3' ����aaaaaa TYPICAL DEEP TRENCH SECTION ' �j (NO SCALE) = ri••� 49tti !V NOTE: Grade Area Over Trench to Drain Away. Minimum 6' Separation From Bedrock. L,*, ; uiamu c .omrRSON Minimum 10' From Lot Line. �� s No. n-4381 .1 < ��i�F`•.. Minimum 4' Separation From Groundwater.Minimum ' 4��: a. ,�,; ♦� a ��• Minimum 10' Separation rat on From Water Service Li e. �S:a� 1 2 3 4 5 6 L MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH & HUMAN SERVICES 825 L STREET, ANCHORAGE, AK 99502-0605 PROJECT #: M0312 SOILS LOG — PERCOLATION TEST PERFORMED FOR: PAUL MYERS / MM&M CONSTRUCTION DATE PERFORMED: 3/27/03 LEGAL DESCRIPTION: LOT 28, BLOCK 3. KNIK VIEW SUED .TEST HOLE # 1 SLOPE j _0 OG -RED -BROWNISH SILTY SANDS W/ GRAVELS POORLY GRADED SANDS WITH GRAVELS & LITTLE FINES - SP WAS GROUNDWATER ENCOUNTERED? IF YES, WHAT DEPTH? DEPTH OF WATER AFTER MONITORING: DATE: BOH 10%1 NO NONE 4/12/1003 S L 0 P E SITE PLAN N TH2 TH0 0 NO SCALE / SEE ASBUILT 2% READING DATE GROSS TIME NET TIME DEPTH OF WATER NET DROP Start 3/27/03 847 8.25" 1 917 30 5.75" 2.5" Recharge 9:17 901, 2 947 30 6.375" 2.615" Recharge 9.47 9.25" 3 10:17 30 7 0" PERC RATE: _2 MIN./INCH PERC. HOLE DIAMETER: 6" TEST RUN BETWEEN 4 5 FT. AND 55 FT. COMMENTS: NO IMPERMEABLES ENCOUNTERED / HOLE PRESOAKED PRIOR TO TEST TEST PERFORMED BY: T.L. KIMBROUGH I, MICHAEL E. ANDERSON, CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE 11 WITH ALL STATE AND MUNICIPAL GUIDELINES ON THIS DATE: 4/13/2003 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17. 18. MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH a HUMAN SERVICES 825 L STREET, ANCHORAGE, AK 99502-0605 PROJECT #: M0312 SOILS LOG - PERCOLATION TEST PERFORMED FOR: PAUL MYERS / MM&M CONSTRUCTION DATE PERFORMED: 3/27/03 LEGAL DESCRIPTION: LOT 28 BLOCK 3 KNIK VIEW SUED TEST HOLE # 2 SLOPE SITE PLAN OG - RED - BROWNISH —r//A SILTY SANDS W/ GRAVELS .10i1 POORLY GRADED SANDS WITH GRAVELS & LITTLE FINES - SP WAS GROUNDWATER ENCOUNTERED? NO S NET TIME L IF YES, WHAT DEPTH? 0 DEPTH OF WATER NONE P AFTER MONITORING. E DATE: 4/13/2003 '_ 49th -7} MKNAEI E. ANDERSON No. EE•u&I �fR0FESS%to BOH N TH2 TH10 0 NO SCALE / SEE ASBUILT . 2% READING DATE GROSS TIME NET TIME DEPTH OF WATER NET DROP Start 3/27/03 9.00 11.0" 1 9 30 30 8.25" 2.75' Recharge 9.30 12.0" 2 1000 30 9.5" 2.5" Recharge 10.00 9.5" 3 10:30 30 7 0" PERC RATE: 12 MIN./INCH PERC. HOLE DIAMETER: 6" TEST RUN BETWEEN 45 FT. AND 55 T. COMMENTS: NO IMPERMEABLES ENCOUNTERED / HOLE PRESOAKED PRIOR TO TEST TEST PERFORMED BY: T.L. KIMBROUGH I, MICHAEL E. ANDERSON, CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES ON THIS DATE: 4/13/2003 ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: LOT 28, BLOCK 3, KNIK VIEW ESTATES SUBDIVISION GENERAL: The scope of this project includes the procurement and placement of a new 1,250 -gallon tank at the location shown on the site plan. Work also includes the construction of a new absorption trench 54' long by 3' wide by 7' effective depth also at the location shown on the Site Plan. The total depth of the trench will be 10' below existing ground and the distribution pipe will be placed at 3' below the surface. All components of the new absorption trench and septic tank must be constructed a minimum of 100' from any surface water or wells in the area. A minimum of 4' of cover is required over the septic tank and 3' over the absorption trench. In lieu of cover 2" of direct bury insulation and 2' of cover may be placed. 2. Construction shall be in accordance with the approved site plan, design drawings, Municipal Permit with any special provisions or conditions, and all applicable State and Municipal Wastewater Disposal Regulations. 3. The Contractor shall be responsible for obtaining all underground utility locates and for the layout of the septic system and verification of the location of all lot lines. 4. Unless specifically agreed otherwise, the contractor shall be responsible for final grading areas subsequently depressed from soil settling. Property owner shall be responsible for revegetation of affected areas unless specifically agreed otherwise. 5. Contractors installing wastewater disposal systems must be certified by the Municipal Department of Health and Human Services for system installations. Owners installing their own systems must receive prior approval from D.H.H.S. before beginning system installation. SEPTIC TANK INSTALLATION A new 1,250 -gallon septic tank must be procured from a certified septic tank manufacturer if the existing tank is found to be defective. 2. A septic tank is to be constructed by a certified septic tank manufacturer. Construction shall include two 4" cleanouts for pumping access. The septic tank shall be sufficiently bedded to prevent settling or shifting of the tank. 4. All standpipes on the septic tank shall extend a minimum of 12 inches above final grade. 5. Tanks installed without 4' of cover shall have a minimum of 2" of direct burial insulation. • Lot 28, Block 3, Knik View Estates April'14, 2003 Page 2 of 3 6. A foundation cleanout shall be installed one to four feet from the building foundation. Two cleanouts are required between the tank and the drainfield. 7. Final grading over the tank shall be such that a positive slope exists away from the septic tank. DRAINFIELD CONSTRUCTION: 1. The drainfield shall be constructed to the dimensions shown on the design. The bottom of the trench shall be within 2" of level. 2. Distribution piping must be placed level with perforations down atop a level bed of drainfield rock. Rock should then be placed over the pipe to provide a minimum of 2" of cover. 3. A silt barrier or geotextile fabric must be placed between the drainfield rock and the natural soil backfill. 4. Monitor tubes must be 4" in diameter and installed at the locations shown on the design. The portion below ground must be perforated. 5. Contractor shall verify the septic tank and drainfield are a minimum 100' away from any private water wells in the area, 150' from a Class "C" Well or 200' from any community well. 6. Direct bury insulation must be placed over the distribution system if less than 3' of backfill depth is available. Finish grade over the trench must be mounded to prevent settlement or depressions. 7. Grade area surrounding the absorption trench to drain away. 8. A minimum 2' of accepting soil is required below the drainfield rock for a 5' wide trench. Contractor shall verify this condition prior to placement of the rock. All pockets of unacceptable materials must be removed and replaced. MATERIAL SPECIFICATIONS: 1. Septic tanks must be constructed by a municipally approved septic tank manufacturer. 2. The following pipe materials are approved for use in septic system installations in the Municipality of Anchorage: Cast Iron (perforated and solid), ASTM D3034 or P.V.C. (perforated and solid), ASTM F810 or H.D.P.E. (perforated, but not solid) and ASTM D2662 or A.B.S. (perforated and solid). 3. Insulation shall be at least 2" thick extruded direct burial polystyrene (Dow Chemical Co. Styrofoam HI or equal). 4. Septic tank inlets and outlets shall be fitted with watertight couplings (Caulder, Fernco, or equal). • _ Lot 28, Block 3, Knik View Estates April 14, 2003 Page 3 of 3 5. A permeable geotextile fabric (Typar, Mirafi or equal) must be installed between the final drain rock layer and the native soil layer. 6. All drain rock shall be .5" to 2.5" in diameter with less than 3% passing the #200 sieve. INSPECTIONS: Municipal Ordinance requires a minimum of two inspections. These inspections must be conducted under the supervision of a professional engineer registered in the State of Alaska. The first inspection must be conducted after the excavation of trenches, beds or pits and before the installation of any gravel. A septic tank may be set in place, but may not be backfilled. The second inspection must be conducted after the placement of the geotextile fabric, gravel, distribution piping, standpipes, cleanouts and insulation. No backfill should be in place at the time of inspection. Contractor shall provide a copy of all field survey layout and construction notes for use in preparing the certified as -built of the completed system. Municipality of Anchorage On -Site Water and Wastewater Program (907) 343-7904 s E T Y CERTIFICATE OF ON-SITE SYSTEMS APPROVAL Parcel I.D. 051-043-30 . Expiration Date: 1. GENERAL INFORMATION Complete legal description Knik View Estates Block 3 Lot 28 Location (site address) 22723Judd Dr. Chugiak:. AK Current Property owner(s) Troy Sayer Day phone Mailing address Real Estate Agent Po Box 772121 Eagle_Riv_e_r, 2. TYPE OF DWELLING: ® Single Family (w/wo ADU) ❑ Duplex ❑ Multiple Dwellings (Single Family and/or Duplex) Day phone 3. NUMBER OF BEDROOMS: 4 TYPE OF WASTEWATER DISPOSAL: 4. TYPE OF WATER SUPPLY: Individual Individual Well ❑ Holding Tank ❑ Individual Water Storage ❑ Community ❑ Community Class Well ❑ Public Sewer ❑ Public Water System Waiver/Variance request for: Distance: Received by: Date: COSA to be released to the engineer, unless otherwise requested by the engineer. COSA Fee $ 5 5 O Date of Payment q%%2'2% Receipt Number ? 1 COSA# 0SCa111 C0 s Waiver Fee $ Date of Payment Receipt Number Waiver # 5. STATEMENT OF INSPECTION BY ENGINEER As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation, based on procedures outlined in the Certificate of On -Site Systems Approval Guidelines for this application, shows that the on-site water supply and/or wastewater disposal system is (are) safe, functional and adequate for the number of bedrooms and type of structure indicated herein. I further verify that based on the information obtained from the Municipality of Anchorage files and from my investigation and inspection, the on-site water supply and/or wastewater disposal system is(are) in compliance with all applicable Municipal and State codes, ordinances, and regulations in effect at the time of installation. Name of Firm ARCTERRA CONSULTING, INC._.___ Phone 696-6111 Address 204,41 PTARMIGAN BLVD., EAGLE RIVER, AK 99577 Engineer's Printed Name KENNETH M. DUFFUS _ Date Engineer's Comments: This investigation was completed in compliance with ADEC and MOA regulations. The assessment of the condition of the well and septic applies only to the conditions as of the day tested. The flow and absorption rates may change due to subsurface conditions that may not be observed from the surface, changes inland use, local soil characteristics, groundwater levels that may fluctuate during the year and the water usage of the family being served by the system. The operational life of all well and septic systems are subject to these various and dynamic characteristics and are outside the control of the evaluator of the well and septic system. Therefore, ArcTerra can not give any estimate of how long a system will function satisfactory for current or future occupants or can ArcTerra guarantee that no unseen ®. it encroachments, deficiencies or discrepancies exist.10, (, 7k 6. DSD SIGNATURE System #1 Approved for bedrooms. System #2 Approved for bedrooms. r T "10 Disapproved. Conditional approval for bedrooms,,ming stipulations: ON-SITE WATER AND __-WASE-v"ATER PROGKAM JJ� ©,0 SER�,�G, r Original Certificate Date: The Municipality of Anchorage Development Services Division (DSD) issues Certificates of On -Site Systems Approval (COSA) based only upon the representations given in paragraph 5 by an independent professional civil engineer registered in the State of Alaska. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's work. 7. ATTACHMENTS: COSA Checklist Septic System Advisory Well Flow Advisory COSA blue sheet -10-10-12 doc X _ Nitrate Advisory Arsenic Advisory Other Legal Description: COSA Checklist Knik View Est. Block 3 Lot 28 If more than 1 septic system on lot: COSA Checklist # L DATA ❑ Welfed with Onsite (or attached) Date drilled Total depth ft Cased to ft ❑ Sanitary seal is functioning correctly ❑ Wires are properly protected Casing height (above ground) in Date of flow test for COSA Static water level at beginning of test ft. Comments B. TANK DATA Age of tank(s) 18 years Tank type/material Septic/Steel Measured operating fluid level in septic tank 49" E■E Standpipes/foundation cleanout per record drawing Date of pumping 4/21/20 D. ABSORPTION FIELD DATA Which system tested (date installed) 8/214/03 01 ALL standpipes present per record drawing Total measured depth from grade 11.5 ft (max) Measured depth to pipe invert from grade 3.5 ft (min) ❑ N/A — pressurized field MI Monitor tubes go to bottom of effective. If not, state depth into effective ® Code -required soil cover over field ❑ System presoaked (Required if vacant for greater than 30 days prior to date of test) Gallons introduced gallons Comments/Deficiencies: COSA Checklist yellow sheet Parcel ID: 051-043-30 of , Structure served by this system Well production at time of test gpm Water storage tank volume gallons Well disinfected for coliform test? ❑ Yes ❑ Nc ❑ Coliform bacteria is Negative Nitrate mg/L ❑ Nitrate less than MRL (ND) ug/L ❑ Arsenic less than MRL (ND) Collected be Date of Sample FT STATION ❑ Requir intenance completed Age of lift station ears Lift station material Comments: Adequacy test date 4/7/21 Results Q✓ Pass For 4 bedrooms Fluid depth prior to test 70 in Water added 600 gal New depth 74 in Elapsed time 1440 min Final fluid depth 70 in Absorption rate 600+ gpd Any rejuvenation treatment (past 12 months) If yes, enter date E. SEPARATION DISTANCES Private Well on Lot to: (Please enter distances if less than required or if community well) Septic Tank/Li on Lot > 100' Wells on Adjacent Lots: Community Sewer Manhole/Cleanout > 100' Yes if No ft ❑ Yes if No ft Neighboring Tank > 100' ❑ Yes ft Private Sewer/Septic Line > 25' ❑ Yes if No ft Absorption Field on Lot > 100' ❑ Yes if No ft Iding Tank > 100' ❑ Yes if No ft Neighboring Absorption Fields > 100' Animal Con > 50' ❑ Yes if No ft ❑ Yes if No ft Manure/Animal Excreta Stora _ Community Sewer Main > 75' ❑ Yes if No ft ❑ Ye ft From Septic/Holding Tank on Lot to: (Please enter distances if less than required) Building Foundations > 10' ❑ Yes if No 5+* ft Surface Water > 100' ® Yes if No ft Property Line > 5' ® Yes if No ft Wells on Adjacent Lots: Absorption Field > 5' ® Yes if No ft Private Wells > 100' Yes if No Water Main > 10' ® Yes if No ft Community Wells > 200' Yes if No Water Service Line > 10' ® Yes if No ft If septic tank is under driveway comment below From Absorption Field on Lot to: (Please enter distances if less than required) Building Foundation > 10' 0 Yes if No ft If absorption field is under driveway comment below Property Line > 10' ® Yes if No ft Wells on Adjacent Lots: Water Main > 10' ® Yes if No ft Private Wells > 100' 0 Yes if No Water Service Line > 10' ® Yes if No ft Community Wells > 200' ® Yes if No Surface Water > 100' ® Yes if No ft F. ENGINEER'S COMMENTS * Meet requirements at time of construction. G. ENGINEER'S CERTIFICATION 1 certify that 1 have determined through field inspections and review of Municipal records that the above systems are in conformance with MOA COSA guidelines in effect on this date. COSA Checklist yellow sheet ft ft ft ft Municipality of Anchorage Development Services Department \ Building Safety Division t On -Site Water and Wastewater Program 4700 South Bragaw St. P.O. Box 196650 Anchorage, AK 99519-6650 www.ci.anchorage.ak.us (907) 343-7904 CERTIFICATE OF HEALTH AUTHORITY APPROVAL FOR A SINGLE FAMILY DWELLING SI Parcel I.D. 76-043.30 1. GENERAL INFORMATION Complete legal description Location (site address or dir HAA #��� S —1 Expiration Date: Current Property owner(s) MM8,M Contracting - Day phone 688.1236 Mailing address P.O. Box 670495 Chugiak, AK 99567 Lending agency Day phone Mailing address Real Estate Agent Day phone Mailing;Address • • reg Unless otherwise requested, HAA will be held by DSD for pickup. 2. NUMBER.OF.BEDROOMS: Four(4) 3. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Individual Well ❑ Individual On-site Individual Water Storage ❑ Individual Holding tank ❑ Community Class A Well ® Community On-site ❑ Public Water System ❑ Public Sewer ❑ The Municipality of Anchorage Development Services Department (DSD) Issues Certificates of Health Authority Approval (HAA) based only upon the representations given in paragraph 5 by an independent professional civil engineer registered in the State of Alaska. Certificates of Health Authority Approval are required for the transfer of title (except between spouses) for properties served by a single family on-site wastewater disposal and/or water supply system. DSD also issues HAAs upon request to homeowners. Certificates of Health Authority Approval are valid for 90 days from the date of issue for properties served by a private or Class C well and may be reissued with new water sample results less than 30 days old. (Certificates may be reissued for a period of up to one year with valid water samples.) Certificates are valid for one year for properties served by Class A or B wells or a public water system. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's work. 4. STATEMENT OF INSPECTION BY ENGINEER As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation, based on procedures outlined in the Health Authority Approval Guidelines for this application, shows that the on- site water supply and/or wastewater disposal system is(are) .safe, functional and adequate for the number of bedrooms and type of structure indicated herein. I further verify that based on the information obtained from the Municipality of Anchorage files and from my investigation and inspection, the on-site water supply and/or wastewater disposal system is(are) in compliance with all applicable Municipal and State codes, ordinances, and regulations in effect at the time of installation. Name of Firm Anderson Engineering Phone 522.7773 Address P 0 Box 240773 Anchorage AK 99524 Engineer's Printed Name Michael E. Anderson, P.E. Date 1116/2003 '' 49th �'. : E, MICHAEL E. ANDERSON ♦ . t 5. DSD SIGNATURE ♦�. �'' NoCE'M Approved for _ bedrooms. �h���,gt:•� Disapproved. Conditional approval for bedrooms, with the following stipulations: ON-SITE *: Additional Comments �S : 1AF�C Attachments: HAA Checklist X Maintenance Agreements Septic System Advisory Supplemental Engineer's Report Well Flow Advisory Other By: G[/, Original Certificate Date: (Rev. 12/00) Municipality of Anchorage Development Services Department �i Building Safety Division 7 " On-Site Water & Wastewater Program 4700 South Bragaw St. P.O. Box 196650 Anchorage, AK 99519-6650 www.cLanchorage.ak.us (907)343-7904 HEALTH AUTHORITY APPROVAL CHECKLIST Legal Description: Lot 28, Block 3, Knik View Estates Subdivision Parcel ID: 015.04330 A. WELL DATA Well" If A, B, or C provide PWSID # Well Log (Y/N) Date completed _ Sanitary seal (Y/N) _ Wires properly protected (Y/N) Total depth ft. Cased to ft. Casing height (above ground) in. FROM WELL LOG AT INSPECTION Date of test Static water level ft: ft: Well production 9.p-m. g.p.m. WATER SAMPLE RESULTS: Coliform colonies/100 ml. Nitrate mg./l. Other bacteria colonies/100 ml. Date of sample: Collected by: B. SEPTICIHOLDING TANK DATA Tank Type/Material SepticiSteei Date installed 812412003 Tank size 1.250 gal. Number of Compartments 2 Cteanouts (Y/N) Y ` Foundation cleanout (Y/N) Y " Depression over tank (Y/N) N High water.alarm (YIN) N Date of pumping Pumper New Construction C. ABSORPTION FIELD DATA I Date installed 812512003 Soil rating (g.p.d./ft2 or ft2/bdrm) .8 GPDISF System type Deep Trench Length 47 ft. Width 3 ft. Gravel below pipe 8 ft. Total depth 11.5 ft. Eff. absorption area 752 ftZ Monitoring tube Y Depression over field N Date of adequacy test Results (Pass/Fail) For _ bedrooms Fluid depth in absorption field before test _ in. Water added_ gal. New depth_ in. Elapsed Time: min. Final fluid depth _ in. Absorption rate >= g.p.d. Any rejuvenation treatment (past 12 mo.) (Y/N & type) N If yes, give date D. LIFT STATION Date installed "Pump on" level at _ in Datum Size in gallons "Pump off"level at _ in. Cycles tested E. SEPARATION DISTANCES SEPARATION DISTANCES FROM WELL ON LOT TO: Septic tank/lift station on lot NIA Absorption field on lot NIA Public sewer main NIA Sewer /septic service line NIA Manhole/Access (YIN) High water alarm level at Meets alarm & circuit requirements? On adjacent lots NIA On adjacent lots NIA Public sewer manhole/cleanout NIA Holding tank NIA SEPARATION DISTANCES FROM SEPTIC/HOLDING TANK ON LOT TO: Building foundation >5' Property line >5' Absorption field >5' Water main >10' Water service line >10' Surface water >100' Wells on adjacent lots >200' SEPARATION DISTANCE FROM ABSORPTION FIELD ON LOT TO: Property line >10' Building foundation >10' Water main >10' Water Service line >10' Surface water >100' Driveway, parking/vehicle storage >5' Curtain drain None Noted Wells on adjacent lots >200' F. COMMENTS G. ENGINEER'S CERTIFICATION I certify that I have determined through field inspections andAN : {c review of Municipal records that the above systems are in ..../ 49 h ................. conformance with MOA HAA guidelines in effect on this date. MICHAEL E. ANDERSON Engineer's Printed Name Michael E. Anderson. P.E. No. CE -4381 Date 111612003 HAA Fee S_' -Z -j f5 "— Date of Payment a Receipt Number �i�i % q L \ (Rev. 12/00) Waiver Fee S Date of Payment Receipt Number in. FROM COUNTRY REALTY PHONE NO. 9076881238 Oct. 13 2003 11:04AM P4 `•.� •`Qr •Sjy �r ��-• r.: ^, jr: ->•• :' .i. !%tt:}_+=:C. •�•• •'y` .:r+•' •"'�� L,'r'1 ii. j:r :i.%t'• .l�,t• .1 S•`j .wy :�,w...a �• L...,,_.r. •r` ;�s .♦� • .••�: is ;M,•,� _ I�•.:i: •l•I,^�y� yM1�l: r • •••t r ,: •:f; - •N •I:, '' •,4 .• •!•.J .:{ •, :_ :., S •4 t•._ Y.fj,` ,i. `�� �•4..R� •,.�•, v"".. Lr: iJG' .dtJ q• . }....•rp^' •.y. • sty:' .ti S. r.''J,.... "1•::.!_ .:at1-�C.it 't.i/•:,,°.'♦„' w:� ••,^L t �•. 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