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HomeMy WebLinkAboutT12N R3W SEC 33 LT 239 „,c,,,,,,, MUNICIPALITY OF ANCHORAGE .0mcnt On-Site Water& Wastewater Program -�� Ste„ PO Box 196650 4700 Elmore Road _it A. Anchorage.Alaska 99519-6650 Phone:(907)343-7904 Fax:(907)343-7997 ,..; r' ” f' http://www.muni_org/onsite f � chartmcnt 4'�C11(1N46f' On-Site Wastewater Disposal System Permit Permit Number: OSP171096 Effective Date: 6/20/2017 Work Type: Septic Upgrade Expiration Date: 6/20/2018 Tax Code Number: 01832220000 Site Legal Address: T12N R3W SEC 33 LT 239 G:3134 Site Mailing Address: 2920 E 154TH AVE, Anchorage Owner: CASSIDY GRACIE M REV TRUST Lot Size in Sq Ft: 108900 Design Engineer: PANNONE ENGINEERING SERVICES Total Bedrooms: 3 This permit is for the construction of: 0 Disposal Field El Septic Tank ❑ Holding Tank 0 Privy ❑ Private 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. Provide notification by calling (907) 343-7904 (24/7). 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 Special Provisions: If a lift station is required, the tank is to be installed outside the well radius. f �7 Received By: S r ! rl Q- Date: /2C,I /I Issued By: kel a)nz 4 _ Date: 6/Z-0/7 I Municipality of Anchorage Dep.irritwIlt P.O. Box 196650 • 4700 Elmore Road Anchorage, Alaska 99519-6650 • (907) 343-7904 • Fax (907) 343-7997 http://www.muni.orq/Onsite Development Services Division On-Site Water and Wastewater Program **** VARIANCE/WAIVER REVIEW **** Waiver#: OSV171036 COSA#: Permit#: OSP171096 PID#: 018-322-20 Legal Description: T12N R3W Sec 33 L239 Engineer: Pannone Engineering Services Applicant: Gracie Cassidy Your request for a waiver of the required 100 feet horizontal separation from the septic tank to the private well has been approved. The approved separation distance is 60.0 feet. If a lift station is required, the tank is to be installed outside the well radius. This waiver approval applies to the proposed septic tank only. Any future upgrade to the on-site wastewater disposal system will require all separation distances be met or another approval from this department. ❑ The affected adjacent property owner(s) have been given a 7 day notice regarding this waiver. ❑ Notarized letter(s) of nonobjection have been received from the owner(s) of the affected adjacent property. ® Adjacent properties are not affected by this waiver. Waiver is Granted: X Waiver is not Granted: Date: (�/ �i{� 17 Approved by: r ./(-1'ame of Rei'er **** VARIANCE/WAIVER REVIEW **** MUNICIPALITY OF ANCHORAGE Community Development Department Phone: 907-343-7904 Development Services Division Fax: 907-343-7997 On-Site Water & Wastewater Program ON-SITE SEWER/WELL PERMIT APPLICATION Parcel I.D. 018-322-20 Property owner(s) Cassidy, Gracie M Rev. Trust Day phone Mailing address 12205 Windy Circle, Anchorage, AK 99516 Site address 2920 E. 154th Avenue Legal description (Sub'd., Block & Lot) Legal description (Township, Range & Section) T12N, R3W, Sec 33, Lot 239 Lot Size 108,900 Sq. Ft. Number of Bedrooms 3 APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING: (El all that apply) Absorption Field ❑X Initial ❑ Single Family (SF) ❑X (w/wo ADU) Septic Tank ❑Q Upgrade Duplex (D) Holding Tank ❑ Renewal ❑ Multiple Dwellings ❑ Privy ❑ (SF and/or D) Private Well ❑ Water Storage H THIS APPLICATION INCLUDES A VARIANCE 1 WAIVER REQUEST FOR: Tank to Well Distance: 60 I certify that the above information is correct. I further certify that this is in accordance with applicable Municipal Codes. fro 11111111b, (Signature of property owner or authorized agent) Permit/Rush Fees: SCA Waiver Fees: 112�f Date of Payment: )2-311-1 Date of Payment: 6)2511 -1 Receipt Number: cDG Receipt Number: 05 o124 Permit No. OS>P 111 OC(,o Waiver No. OSV f 1 I 06(p Permit App_:-:• ::., Pannone Engineering Services plc Steven R. Pannone, Principal Registered Professional Engineer E-mail: steve@panengak.com June 20, 2017 Subject: T12N, R3W, Sec 33, Lot 239 Septic System Upgrade Permit Request Design Narrative This is a design narrative for a permit to install an upgrade septic system to be issued for this property. The proposed system will serve an, existing three (3) bedroom house. Currently the lot is developed, and the existing undocumented septic system is likely in ground water. The system will utilize a new 1000g septic tank and conventional drain field. This lot and the surrounding developed lots are served by private wells. There are no surrounding wells within 100' of the proposed septic system. The proposed tank will be located 65 feet from the existing well on this lot. See waiver request I. Soils. One test hole was performed in the vicinity of this system by PES in May 2017, and groundwater was monitored for at least seven days. Ground water was observed at a depth of 3.0' below the surface in the test hole monitor tube in May of 2017. Bedrock was not encountered in the test hole to 6.0'. Based on the results of the percolation tests and overall soils appearance; an application rate of 0.7 gallons/day/square foot was used for a conventional wastewater system, in the area of the test hole. 2. Soil Absorption System Design. a. See Sheet 1 of the design package. 3. Surface Water: There is no surface water within 100 feet of the proposed septic tank and drain field. The proposed drain field upgrade will maintain at least 100 feet from all surface water and drainage ditches, including Rabbit Creek to the East. 4. Topography: The existing topography on the lot generally slopes from northeast to southwest, with a slope of approximately 5% in the area of the drain field. There are no steep slopes within 50' of the proposed drain field. The proposed drain field will maintain 50' separation all steep slopes. 5. Drawing Markings: The Drawings are marked "For MoA Review Only". When written notification that the review is complete and that there are no further comments is received from MoA On-Site Department, the note will be removed and "Issued for Construction" drawings will be issued. The proposed installation will not affect the future development of this or the surrounding lots. Mailing: P.O. Box 100217, Anchorage, AK 99510-0217 Physical: 332 East Manor, Anchorage, AK 99501 Telephone: (907) 272-8218 FAX: (907) 272-8211 Pannone Engineering Services LLC Steven R. Pannone, Principal Registered Professional Engineer E-mail:steve@panengak.com 19 May 2017 Subject: T12N, R3W, Sec 33, Lot 239 Well to Tank Separation Waiver Request 1. Waiver: We would like to request a waiver for separation distance for the septic tank to the well located on the subject property. Due to the grades in the area the tank cannot be moved closer to the field. a. Tank (new)to Well (E):A separation distance waiver between existing well on Lot 239 to the new septic tank also on the same lot. The distance between the existing septic tank and the well is 62' and the new tank is to well will be 65'. We are requesting a waiver for the septic tank to the existing well for a distance of 60' on Lot 239. i. DEC Criteria:The well on Lot 239 is a private well with no documentation. The nearest well just to the north at BLM Lot 208 has a depth of 462 feet, with a static level of 18 feet and is cased to 462 feet. Due to the same terrain, elevation, and proximity to the creek, this well is likely similar to the well on lot 239. The well data for Lot 208 to the north is summarized as follows: LOT q WELL STATIC YIELD Well Data H2O Test Date 5oil Well Nitrate DEPTH WATER Date Characteristics Log Level LEVEL Data T12N R3W Sec 33 162' 18.0' 24 GPM 1974 Y Y UNK L208 The ground water in this area typically flows from the northeast to the southwest. The soil cross-sections are similar across the area and a homogenous cross-section was used to calculate the DEC criteria for all components. As outlined under 18 AAC 80.020 and 18 AAC 72.021(a), I have calculated the following points: Summit Estates B1, L1 Septic System to Well: Distance from sewer system bottom to groundwater 0.0 Soil sorption below sewage system 4.5 Soil permeability below the system 3.0 Water table gradient 0.7 Horizontal separation 1.5 Total Points 9.7 "The sum of the above values could equate to the following conditions: 8-12 Contamination is unlikely from bacteria but could be possible from chemicals or virus." Additionally, this waiver is for a tank, not a field. During normal operation the tank will be sealed and will discharge into a pipe to the drain-field wich is over 100 feet from the well.This system has been operating in this configuration for over 50 years with no adverse effects. In my opinion, this waiver request meets the above criteria for approval and does not constitute risk to Mailing: P.O. Box 100217, Anchorage, AK 99510-0217 Physical: 332 East Manor, Anchorage, AK 99501 Telephone: (907) 272-8218 FAX: (907) 272-8211 Page 2 of 2 health. I hope the above information will assist you in determining that the waiver should be granted. The proposed installation will not affect the future development of the surrounding or existing lots. If you have any questions or concerns, please contact me at 272-8218. Sincerely, ***;t; '17,!%OF ..... •44 � : fit• Steven R.Pannone =q Steven R. Pannone, P.E. Owner/Civil Engineer Mailing: P.O. Box 100217, Anchorage, AK 99510-0217 Physical: 332 East Manor Ave, Anchorage, AK 99501 Telephone: (907) 272-8218 FAX: (907) 272-8211 . \ . / WELL (E) 1 / BLM LOT 239 0 3BR HOUSE 3 § '" (E) Mdo1 65.0 I l FCO Ai ' \ 100.6 `A ABANDON SEPTIC TANK (E) PER CODE INSTALL 1000g SEPTIC TANK (P) WITH DCO \ 4 / INSTALL R.I. IF LESS THAN 4' OF COVER 1 `1 ii,\ ^� 44 APPROXIMADRAIN FIELDE(E)OCATION OF W ABANDON PER CODE //4. 10.0 " LIMIT OF FILL ' ( s' • s. s , 1 03 Cli. 140.8 C3‘..‘\\''\\N\.' DESIGN PARAMETERS a . A° _PRIMARY/RESERVE SEPTIC SYSTEM _� �� , N0. BEDROOM: 3(450 gpd) TANK SIZE: 10009 TH-1 PRIMARY/ RESERVE DRAIN FIELD(P) PERC RATE: <1 MPI 43LF x 15.0-W x 0.5'ED x +2.0'TD SOIL RATING: 0.7 GPD/SF REMOVE ORGANICS AND PLACE 3.0' SAND AREA RQD: 642.8 SF INSTALL RIGID INSULATION IF LESS THAN 3' OF COVER SYS, TYPE: BED 15' WIA INSTALL MT IN EACH CORNER MIN LENGTH: 42.9 LF SLOPE TO VARY TO MEET USE: FILL AND GRADE REQUIREMENTS 43LFx15'Wx0.5' E.D., +2' TD WITH 3.0' OF FILTER SAND TOTAL AREA: 645 SF 20' RISER REPOSE WEIGHT CALCULATIONS Buoyant Force = Weight of Water Displaced TYPE II: 154.7CF ((Plx(4.8)-2/4)x8)x62.4 PCF = 9,160 # Up 2,0 1110111111 11111811f COUNTER WEIGHT Assume water © surface - all soil saturated Assume angle of repose = 20 Degree (WORSE CASE) BED TANK W/ Assume bedding does not odd to force down t.I SEWER ROCK Weight of tank = 927 # Weight of MoA Type II (135 PCF - 62.4 PCF)=72.6 pcf I--2' TYP. 154.7CF x 72.6 PCF = 11,231 # Down Total Weight on Tonk = 12,158 # OK! 1000 SEPTIC TANK NOTES: PANNONE ENG SVC, LLC —'OF A�\okl 6/ 2017 FOR CONSTRUCTION P.O. BOX 100217 ANCHORAGE, AK 99510 r 4. ' ''4S 4 _ PHONE (907) 272-8218 FAX (907) 272-8211 AV, �(� y#0 Scale DRAWN BY: *O••M ` ` �� *r�pi P.I.D. NO T12N, R3W, Sec33, LOT 239 ��� i ;-322-20 ROBERT MAHONEY r teven .•anriorae.� PERMIT NO. 61:.. CE 8149 ;"- 2920 - OSP171096 2920E 154TH AVENUE _ PLAN ANCHORAGE, AK 99516 +��� � .- Sheet ir 1et 3 NN70 SPECIAL PROVISIONS TO SPECIFICATIONS 1. ALL CONSTRUCTION SHALL BE INSTALLED AS SPECIFIED IN THE MOST CURRENT EDITION OF THE MUNICIPALITY OF ANCHORAGE STANDARD SPECIFICATIONS (MASS) FOR COMPONENT PARTS AND MATERIALS USED IN CONSTRUCTION OF ON—SITE WASTEWATER DISPOSAL SYSTEMS AND AND IN ACCORDANCE WITH AMC 15.65 AND 15.55. 2. SCOPE OF WORK: INSTALL NEW SEPTIC TANK, SOIL ABSORPTION SYSTEM. 3. GROUNDWATER WAS ENCOUNTERED AT A DEPTH OF 2 FEET BELOW EXISTING GRADE AS EVIDENCED BY THE SOIL TEST HOLE. IF AN APPARENT WATER TABLE IS OBSERVED IN ANY OF THE EXCAVATIONS LESS THAN 2 FEET BELOW EXISTING GRADE NOTIFY THE ENGINEER IMMEDIATELY. 4. THE CONTRACTOR (BOTH WELL AND SEPTIC SYSTEM CONTRACTORS) SHALL HAVE ANY WELL LOCATION AND SEPTIC LOCATION STAKED AND ANY LOT LINE AND WELL RADIUS SHOWN ON THE PLAN WITHIN 30 FEET OF THE PROPOSED SYSTEM STAKED BY A REGISTERED LAND SURVEYOR BEFORE STARTING THE WORK. 5. THE CONTRACTOR IS RESPONSIBLE FOR ALL R.O.W. AND OTHER REQUIRED PERMITS, OTHER THAN THE ATTACHED. 6. THE CONTRACTOR SHALL CALL FOR LOCATING OF ALL BURIED UTILITIES. 7. THE CONTRACTOR SHALL PROVIDE 24 HOUR NOTICE TO THE ENGINEER PRIOR TO START OF WORK. ALL SURVEYING AND LOCATES SHALL BE IN PLACE PRIOR TO NOTIFYING THE ENGINEER. 8. THE CONTRACTOR SHALL NOTIFY THE ENGINEER OF ANY DISCREPANCY BETWEEN THE APPROVED DRAWINGS AND SITE CONDITIONS/LIMITATIONS POTENTIALLY CAUSING THE NEED TO MODIFY THE DESIGN. 9. AT THE COMPLETION OF THE WORK, THE CONTRACTOR SHALL SUBMIT RED—LINE AS—BUILT DRAWINGS TO THE ENGINEER. THE RED—LINES SHALL INCLUDE PIPE LENGTHS, ORIGINAL GROUND ELEVATIONS, PIPE ELEVATIONS, AND TANK ELEVATIONS. 10. THE CONTRACTOR SHALL PROVIDE PHOTOGRAPHS OF THE SYSTEM INSTALLATION TO INCLUDE BOTTOM OF EXCAVATION, TOP OF PIPE WITH CLEAN—OUTS AND MONITOR TUBES INSTALLED, INSTALLED TANK AND FINAL GRADING. 11. THE CONTRACTOR PROVIDED DATA (UPON WHICH THIS RECORD DRAWING IS BASED) APPEARS TO REPRESENT THE PROJECT AS CONSTRUCTED. THIS DATA IN CONJUNCTION WITH THE PERIODIC FIELD OBSERVATIONS BY THE ENGINEER (OR HIS DESIGNEE) AS REQUIRED BY AMC 15.65 DOES NOT GUARANTEE THAT THERE ARE NO HIDDEN DEFECTS BY THE CONTRACTOR. 12. THE CONTRACTOR SHALL SIGN THE FOLLOWING: I CERTIFY THAT ALL WORK WAS PERFORMED IN ACCORDANCE WITH THE APPEND PERMIT, AND ANY AND ALL CHANGE ORDERS, AND THAT THE AS—BUILT REDLINES ARE TRUE AND ACCURATE REPRESENTATION OF THE PROJECT AS CONSTRUCTED. CONTRACTOR: BY: . TITLE: DATE: . ABBREVIATIONS y1/ WATER LINE/ TH TEST HOLE WELL RADIUS (P) PROPOSED (E) EXISTING SS NEW SEPTIC CO CLEAN OUT NO. MT MONITOR TUBE NO. TYP TYPICAL NOTES: PANNONE ENG SVC, LLC SOF At`A1 DDote t 3/2017 FOR CONSTRUCTION P.O. BOX 100217 ANCHORAGE, AK 99510 '` qS �� �"� •'� t Scole DRAWN BY: PHONE (907) 272-8218 FAX (907) 272-8211e3,65!. 1 id), *�V NTS DRM .... �� .:•• 0 P.I.D. NO T12N, R3W, Sec33, LOT 239 ‘1� • • --20 ROBERT MAHONEY Steven . �'onnorae PERMIT NO CE 8149 �� OSP171096 2920E 154TH AVENUE + �s . � PLAN ANCHORAGE, AK 99516 �l� •••••• � � Sheet A. TrOFESSt s wkwoi�� 3 OF 3 SOILS LOG - PERCOLATION TEST TEST HOLE 1 SLOPE SI LAN OR ORGANICS 1 tit il , 2 \ % POORLY j 3 — GPI GRADED 4 -14 SP GRAVEL AND \ �/ 4 SANG 12 II 5 /--------- 6 X �V BOH TH 7 8 1/1/1 /9 10 -- 11 -- TH-1 12 -13 _ _ WAS GROUND WATER SLOPE 14 ENCOUNTERED? Y 15 IF YES,AT WHAT TH DEPTH? -4' - x 16 17 DEPTH TO WATER AFTER MONITORING? -3'- 18 DATE: 5/15!2017 19 DEPTH TO WATER AFTER CLOCK WATER MONITORING? 2'- READING DATE TIME NET TIME LEVEL NET DROP READING 20 DATE: 6/13/2017 1 5/06/17 10:30 2 DATE PERFORMED:5/06/2017 ' 3 UNABLE TO TAKE READING 4 DUE TO HIGH PERCOLATION RATE 5 6 PEROLATION RATE <1 (min/inch)PERC HOLE DIAMETER 6 inches TEST RUN BETWEEN 2 FT AND 3 FT COMMENTS:Test hole excavated by REEKS CONTRACTING PERFORMED BY: Dan Moran. I CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST. NOTES: PANNONE ENG SVC, LLC -.,��•.xx Dote pF !Ai... �� / / FOR CONSTRUCTION P.O. BOX 100217 ANCHORAGE, A99510 P'�% • ' k1k 6 13 2017 �'� •-• ••4- 0 Scale PHONE (907) 272-8218 FAX (907) 272-8211 �G.,., - •77 + DRAWN BY: *, . • *�, NTS DRM f ' 4' r )-- 0 P.I.D. NO - T12N, R3W, Sec33, LOT 239 �� / 018-322-20 S en . Pannone ROBERT MAHONEY T /0•• CE 8149 % PERMIT NO. TO /0 \ � 05P171096 2920 E 154TH AVENUE ti SOILS LOG ANCHORAGE, AK 99516 i'�,�••.S.ONF,,F � Sheet '\\�N���� 2OF3 LaJq SG$ SCS Ref.# 1173109001 Client Name Pannone Eng.Srv. Printed Date/Time 06/14/2017 12:19 Project Name/# 2920 E 154th Collected Date/Time 06/08/2017 11:00 Client Sample ID 2920 E 154 Received Date/Time 06/08/2017 11:27 Matrix Drinking Water Technical Director Stephen C.Ede Sample Remarks: Allowable Prep Analysis Parameter Results LOQ Units Method Container ID Limits Date Date Ink Waters Department Total Nitrate/Nitrite-N 1.37 0.100 mg/L SM21 4500NO3-F A (<10) 06/13/17 AYC Aee .