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Home My WebLink AboutLAKE RIDGE TERRACE BLK 4A LT 9 Tom Fink, Mayor Municipality Anchorage Department Of Health and Human Services ' ' 825 "L" Street P.O. Box 196650 Anchorage, Alaska 99519-6650 April 10, 1989 Mr. Robert S. Shafer S & S Engineering 17034 Eagle River Loop, Suite 204 Eagle River, Alaska 99577 Subject: Lot 9, Block 4A, Lake Ridge Terrace Dear Mr. Shaf'er: The department has reviewed your April 10, 1989 request for a waiver of separation bet~en the ~pgraded sewer system on Lot 9 and the top of the cutbank. As you point out, this office does not review waivers for community sewer systems or wells, which are under the jurisdiction of the State of Alaska. To the best of my knowledge, however, the state does not have its own criteria for this type of waiver, AMC 15.65.005 defines the scope of the Wastewater Ordinance as being applicable to disposal systems serving single family dwellings. Since our ordinance does not pertain to multiple family dwellings, we can only offer general guidance to you as to our method of evaluating waivers for single family dwellings~ AMC 15.65.040I requires that all portions of a sewer system be "fifty (50) feet uphill' ~rom any man-made or' any.~natural break in the natural slope of the tesrain wh%Ye the slope changes by twenty-five (25%) percent or greater .... " In evaluating a waiver request, the following criteria would be considered: Area well logs and evidence of hydrostatic pressure Depth of cutbank Soil conditions, percolation data, and water table information at the site of the installation Total depth of the sewer system Presence of impermeable soil layers I trust this information will be useful to you. further questions, please contact me at 343-4744. If you have Sincerely, Susan Oswalt On-Site Services S0/166 ROBERT A, SHAFER April 10, 1989 CIVIL ENGINEER 694-2979 HEALTH AUTHORITY APPROVALS SEWER & WATER MAIN EXTENSIONS SEWER & WATER INSPECTION ENGINEERING STUDIES AND REPORTS WELL INSPECTION & FLOW TEST SITE PLANS ROAD DESIGN SOIL TEST PERCOLATION TEST STRUCTURAL & MECHANICAL INSPECTIONS ON SITE WASTE WATER DISPOSAL SYSTEM DES[GN Mr. Dan Roth Municipality of Anchorage DEPARTMENT OF HEALTH AND HUMAN SERVICES 825 L Street Anchorage, Alaska 99501 REFERENCE: Lot 9; Block 4A; Lake Ridge Terrace Subdivision Dear Dan, This letter is to follow-up your site visit with me to the referenced property on April 7, 1989. Our site visit was made as a reset of the State of Alaska, Department of Environmental Conservation (ADEC)/Steve Eng letter dated April 6, 1989 responding to a request for approval we submitted to their office for the referenced property. Although there is a multi-family dwelling located on the referenced property and approval of wastewater disposal systems serving such facilities is not under the jurisdiction of the Municipality of Anchorage (MOA), Department of Health and Human Services (DHHS), we request you issue a w~iver letter showing you have no objection to the referenced septic system being located 30 feet from the cut-bank as apposed to the 50 feet prescribed by Municipal Ordinance 15.65.040. The primary force which would cause the liquids from the septic system to travel horizontally toward the cut-bank would be a hydro-static force. The hydro-static force wo~d be caused by a liquid build-up in the absorption trench and a saturation zone located around the leachfield area. However, the tight GM soils in the area (soil and well logs attached) cause a large friction loss for liquids travelling through the soil. This friction loss would deplete the energy given to the liquid from the hydro-static pressure. Therefore, the liquid cannot travel horizontally. Instead, the primary force acting on the liquid would be the force due to gravity. This force will tend to draw the liquid vertically downward. The other method by which liquids from the absorption trench could travel horizontally toward the cut-bank is to traverse along an impermeable layer of soil sloping toward the cut-bank. However, the test hole excavated on the lot to a depth of 19 feet showed no signs of an impermeable layer. There is no log on record for the well located on the referenced property. The closest well for which a log does exist is located on the neighboring Lot 10; Block 4A; 17034 EAGLE RIVER LOOP, SUITE 204, EAGLE RIVER, ALASKA 99577 page two Lot 9; Block 4A; Lake Ridge Terrace Subdivision April 10, 1989 Lake Ridge Terrace. From this well log it app~ras there is no impermeable layer u~il a depth of 98 feet below ground level at the location of the well. This is a much lower elevation than the bottem of the cut-bank. Therefore, there is extremely little possibility of the liq~ds from the absorption trench travelling over 30 feet horizontally to the cut-bank. It is also noted the cut-bank is covered with a wire mesh for slope stability. The cut-bank is also covered with vegetation consisting of young willows, birch trees and various grasses. Attached for your review are the following documents: I. A letter from ADEC/Steve Eng d~ed April 6, 1989. 2. A site plan sketch for the referenced property. 3. A profile sketch for the referenced property. 4. A soils log for the property. 5. A well log for the neighboring Lot 10. If yo~e additional information, please contact us. DEPT. O~ ~VffRONM~NT/~L ~ONS~RVAT~0N / 3601 C om ............. ~ ANCHORAGE, ALASKA 99503 ST~.VE COWP£R~ GOV£RNOR 563-6775 17034 Eaglc Rivcr Loop Rd #204 Eagle River, AK 99577 ATTN: Robert A. Shafcr, PoE. SUBJECT: Lot 9, Block 4A, Lakeridge Terrace Subdivision Eagle River, Dear ~ Shafer: The Department has reviewed your March 27, 1989 letter which attempts to explain an error in your engineer as-built, dated March 7, 1989. Your March 7, 1989 as-built contains a drawing which shows a 150 foot radius of noncontamination from the subject Class C well. Your as-built is in error due to a neighboring septic system located 114 feet from the Class C well. Also, the new septic system which was constructed was built within 30 feet of a steep cut bank, again not reported on your engineer as-built drawing. Mike Lewis of this office explained these violations to you on March 24, 1989. The approval for the Class C .... ~ issued ~'~ +~i ~ ..... approved only for a 5 bedroom unit. val id. You have violated 18 AAC 80.100 by not identifying the location of the existing wastewater treatment system within the 150 foot radius of the Cl[ass C well. The installation of the absorption trench Within 30 feet of the extreme cut-bank violates the Municipal wastewater disposal ordnance which requires a 50 foot separation. Because of the sai~ violations approval of the water and wastewater system i~. hereby denied. Sincerely, SE:kk' cc.: .~Mike Lewis Bruce Erickson AHFC C/O Jack White Co. IV. DIAGRAM OF SYSTEM(S) INSTRUCTIONS FOR DIAGRAM 1. In a plan view, locate and identify each of the following: -" a) Well b) All Structures c) Septic Tank d) Soil Absorption System e) Surface Water f) Sources of Contamination g) Property Line (Include Dimensibns} h) Closest well on an adjacent property i) Closest septic tank on an adjacent property j) Closest edge of an absorption field on an adjacent property ~ 2. Show distances between the we]l and each of the other items listed in 1. 3. Show distances between water bodies and each of the other items listed in 1. 4. In a cross section view of the soil absorption area, identify each component end show the depth (thickness) of the following: a) Soil Cover b) Absorption Material c) Water Table d) Bedrock e} Discharge Pipes S.R.B. 196X Eagle River, AK 99577 SOILS LOG - PERCOLATION TEST SOILS LOG PERCOLATION TEST SLOPE SITE PLAN ~'1'- , / WATER - :' ~COUNTERED? . · . . : IF YES, AT WHAT ~ m DEPTH;:' I ' -~ '/' " 127 13 14 15 16 17 18 19 Gross Net Depth to Net.. Reading Date Time Time Water '~ ' Drop ,...'.' · :: ~ ../ ~' /TEST RUN BE'T)N[EN ..~ FT AND ---~--~ ~T' · ! : '~ p . - /~..~ · ~, _2 . . , ..,.: :. ~ DEPT. OF HEALTH & ENVIRONMENTAL PROTECTIOhJ. OCT 2 9 197'6 REC, Ei.VED %fELL_ LOG " -e Subdivision, Hillcrest Circle Lot 10, Blk. 4a, Lake Ridge rerrac lder: Harry A. Mackey Driller: Harry A. Mackey Owners : Speculation House 0-5 ft. - Top Soil 6-83 ft. - Hardpan with boulders and some gravel seams 84 ft. - Gravel with water 84.6 ftc - Back to hardpan 84.6- 98 - Gravel, Sand and bou~ders 98-130 ft. Brown shale 30-152 - Sandy shale and sandstone 52-~80 ft. - Sandstone 80-182 ft. - Coal seam with water 182-198 ft. - Back into shale ,oduction: 3½~gal per mino ~tatic Level: 98 ft. ]ased to: 4A.6 QGRE/" R ANCHORAGE AREA Department ~3E0n~irs~rn~ntal Quality Anchorage, Alaska 99503 INSPECTION REPORT ON-SITE SEWAGE DISPOSAL SYSTEM NAME I'~A¢-~-~ ~h.(.t~,~ MAILING ADDRESS PHONE LOCATION ~'t~,~l~. '.A~o-~.~ LIt'~~ ~ ~ LEGAL DESCRIPTION ~T SEPTIC TANK:'L~~ ~tcS '~k DISTANCE FROM WELL MANUFACTURER ~A~¢ MATERIAL INSIDE LENGTH INSIDE WIDTH NUMBER OF COMPARTMENTS LIQUID DEPTH_ LIQUID CAPACITY ¢_-OOO GALLONS. SEEPAGE PIT: NUMBER OF PITS i . DIAMETER LINING MATERIAL ~ . CRIB SIZE: BUILDING FOUNDATION NEAREST LOT LINE · . OR WIDTH ~¢ LENGTH ~-q DEPTH 10' DIA~TER ~DEPTH DISTANCE FROM: WELL TOTAL EFFECTIVE ABSORPTION AREA (WALL AREA) /0 Z~ SQ. FT. ADDITIONAL ABSORPTION WELL: TYPE BUILDING FOUNDATION CESSPOOL APPROVED CONSTRUCTION NEAREST ~1 LOT LINE OTHER SOURCES DISAPPROVED NEAREST SEWER L~NE REMARKS DEPTH SEPTIC TANK DISTANCE FROM: SEEPAGE [.., SYSTEM 3~ DISTANCES: DIAGRAM OF SYSTEM INSTALLED BY: PIPE MATERIAL: LOT SLOPE: REMARKS: r GreaTer ANCHORAGe Area BOROUGH DEPARTMENT OF ENVIRONMENTAL QUALITY 3330 "C" STREET ANCHORAGE, ALASKA 99503 TELEPHONE 274-4561 SEWAGE DISPOSAL SYSTEM -- APPLICATION AND PERMIT PERMIT NO. ., OTHER INSTALLATION OF: SEPTIC TANK ~ SEEPAGE PIT , DRAIN FIELD / TO BE INSTALLED BY FINANCED THROUGH SOIL TEST RESULTS ~~/ NOTE: THIS PERMIT IS NOT VALID WITHOUT SOIL, TEST FINAL INSPECTION: 24 HOUR NOTICE REQUIRED. BACKFILLING OF ANY SYSTEM WITHOUT FINAL INSPECTION BY THE DEPARTMENT OF ENVIRONMENTAL QUALITY AUTHORITY WILL BE SUBJECT TO PROSECUTION. TYPE () (4 ~' ~ SEEPAGE AREA SIZE ' TYPE · MINIMUM DISTANCES, REQUIREMENTS FOUNDATION TO SEPTIC TANK FOUNDATION TO SEEPAGE PIT '/~ DRAIN FIELD SEPTIC TANK TO SEEPAGE PIT WALL SEPTIC TANK ., SEEPAGE Pit ~ , DRAIN FIELD TO NEAREST LOT Li~E~ ~. DRAIN FleCk'; ~ ALSO CONSIDER AREA WELLS. DIAGRAM OF SYSTEM SEPTIC TANK, , SEEPAGE PIT TO RIVER, LAKE, STREAM. · DRAIN FIELD CAST IRON INTO AND OUT OF SEPTIC f~.N.~A_~D I,~_.T~O CRIB CROSSING~GaP OF EXCAVATION 5 FEET INTO UNDISTURBED SOIL. 4 INCH DIAMETER CAST IRON SIPHON PIPES ON SEPTIC TANK AND SEEPAGE PiT FITTED WiTH AIRTIGHT REMOVABLE CAPS. GRAVEL BACKFILL CONFORM TO BOROUGH REGULATIONS REGARDING INSTALLATION. I CERTIFY THAT I AM FAMILIAR WITH THE REQUIREMENTS OF GREATER-A~CHORAGE AREA BOROUGH O~D NANCE NO. 28-68 AND THAT THE ABOVE DESCRIBED SYSTEM IS IN ACCORDANCE WITH SAID CODE. _ .. Performed for Legal Description: This form reports: 3330 "C" Street Anchorage, Alaska 99503 SOILS LOG - PEROLATION TEST Harry. Maoke2[- .."~. GREATER ANCHORAGE AREA BOROUG'~-x anvn~wlN ~ ..... Oepartment of Environmental Qua. .y ,mno~o~ vary ~Ov~d~i:N¥'~5~'~]~ Date Perfo~ed 9/~/7~..-'~ Lo t 9 ~ Blo_c,k ~A Soils log Yes Lakeridg~ Terrace Percolation 'test Depth Feet 2- 3- 5- 6- 7- 8- 9- 10- ll 12- 13- Silty Sandy Gravel with some Cobbles GM - 22~ SF/BR 14 Bottom of Pit Was ground water encountered? No If yes, at what depth? Reading Date Gross Time Net Time Depth to Water Net Drop minute. Percolation rate .Proposed installat~: Seepage Pit Yes Drain Field ........................... [)epth of Inlet . Depth to bottom of pit or trench COMMENTS: 6--B~--'~-J{-Bi~----I)t~Ples 9 ~ Crib No grot~nd water or Bedrock encomntered ...... p-~i~or,n-e'~- ~-:- i-.~-0% Certi fled By: Cons trtlc ti on Te_s_~__Date: -g/-6/-.74-- N~-a-I -'~t-.-'-HiC~B-a-~ ...... L ab EQ-040 (6/74) :.A i [-ix :!,~ChOR,~,,.~F__ , ,,,~--,_,~ BOROUGH D~:i.:',.'tment of Environmental n~,a'~,ity 3330 "C~ .o,. ~:et, Anchorage, Alaska 99~03 ~.~._974 zt=~l..... Date Received 10/4/74 Time of Inspection Date of Inspection REQUEST FOR APPROVAL OF INDIVIDUAL SEWER & WATER FACILITIES FOR Conventional 10/4/74 Approval requested by: Alaska Mutual Savings Bank Mailing Address: Anchorage AK Phone: 2. Property Owner: Harry Mackey Mailing Address: St. Rt. Box 1175 Chugiak AK 3. Legal Description: Lot 9, Block 4A, Lakeridge Terrace Phone: 4. Location: 5.. Type of facility to be inspected Duplex No. of bedrooms 6. Well Data: . A. Type Drilled C Construction Standard B. Depth 235' D. Bacterial Analysis Satisfactory 7. Sewage Disposal System: A. Installed 1974 B. Installer Harry Mackay C. Septic Tank: I. Size 2000 gal 2. Manufacturer Wallace D. Seepage Pi't: E. Disposal Field: Distance~: A. Hell to: Septic tank 120' Nearest lot line 5' B. Foundation to septic tank 1. Absorption Area 33x24xlO' Total length of lines , Absorption area , Other contamination 22' , Absorption area 'C. Absorption area to nearest lot line 30' 2. Material Log 135', Sewer Lines 50' EQ-03¢ (!/74) Page i of two pages 2aCe 2 of two pages - Reo~'-~ for Approval of Individual S :m & Water Facilities , ~ Legal Description Lot 9 Block 4A Lakeridge Terrace Comments /n_, Approval Valid for one year from date signed ~x/ Grea~er Anchorage Area Borough, Department of Environmental Quality DIAGRAM OF SYSTEM certify 'that the information contained in this request tot approval to be a true and accurate representation of the subject sewe? and water facilities and these facilities are operating satisfactorily. Date SIGNED FN-Nq~ (1/7~1 DEPT. OF ENVIRONMENTAL $00THCENTRAL REGION,~L OFFICE / 3.98 DENALI STREET ] MACKAYBUILOING-ROOM850 September 6, 1 974. ANCHOR, qGE9$501 Mr. John Lee Dept. of Environmental Quality Greater Anchorage Area Borough Eagle River, Alaska 99577 SUBJECT: Lot 9, Block 4-A, Lake Ridge Terrace Subdivision Dear Mr. Lee: As the well for the duplex has been drilled and the foundation for the building exists, we have no objection to the distances from the well to the sewage disposal system elements meeting the require- ments which were in effect prior to the effective date of the Waste- water Disposal Regulations. This waiver is based on our belief that the well was drilled by mistake as the owner was not aware of the new requirements and also because of soils and topography, this should provide an acceptable situation. Yours truly, Regional Environmental Engineer cc: Mr. Harry Mackey DATE: TO: FROM: SUBJECT: ~E~ORANDU~ May 29, 1984 Laura Crow Environmental Health Division Request for Refund - Account # 2460 Please make arrangements for the following refund~ this property is to be inspected by the State of Alaska instead of this agency. S & S Engineering SR B 196-X Eagle Rive~, Alaska 99577 Receipt #287996 Amount $45.00 Account ~ 2460 Laura J. Ward Office Associate cc: File attachments Lot 9 Block 4A Lake Ridge Terrace Subdivision Sewer and Water Other 91-010 (4/76) RECEIVED F RO~a ADDRESS MUN'~"PALITY OF ANCHORAGE POUCH 6-650 * .-.,,NCHORAGE, Al( 99502 r, PHONE 264-64.00 FINANCE DEPARTMENT DESGRIP~ DISTRIBU't IOPa White Treasury; Yellow --- Customer; Pink Book; Goldenrod Departmen~ 40 002 (Rev