HomeMy WebLinkAboutTHE CASCADES BLK 1 LT 6 Onsite File The Cascades Block 1 Lot 6 #078 - 321 - 06 Municipality of Anchorage On-Site Water and Wastewater Program • (907) 343-7904 Page 1 of 3 ON-SITE WASTEWATER INSPECTION REPORT Permit Number: OSP171214 PID Number: 078-321-06 Dwelling: ❑■ Single Family (SF) ❑ Duplex(D) ❑ Multiple(SF and/or D) Project: A New ❑ Upgrade Name: ABSORPTION FIELD Troy Davis Homes Address ❑ Deep Trench ❑■ Shallow Trench ❑ Bed ❑ Mound 1689 Knik Goose Bay Rd Suite 440 Wasilla, AK ❑ Other Phone Number of Bedrooms Soil Rating Total depth from original grade (907) 310-2501 3 1.0 GPD/SF 3.5 Ft. LEGAL DESCRIPTION Depth to pipe invert from original grade Gravel depth beneath pipe Subdivision Block Lot 3.0 Ft. 0.5 Ft. The Cascades 1 6 Fill added above original grade Gravel length Township Range Section 0-1.2 Ft. 90.0 Ft. Gravel width Beds:Number of Lines Distance between lines SEPARATION DISTANCES 5.0 Ft. Ft. To Septic Absorption Lift Station Holding Sewer Total absorption area Number of trenches Dist.between trenches From Tank Field Tank Line 450 Ft2 2 10 Ft. Well >100' >100' N/A N/A >25' TANK g Septic 0 S.T.E.P. 0 Holding 0 Other Manufacturer Capacity Surface Water >100' >100' N/A N/A Anchorage Tank 1000 Gal. Material Number of compartments Lot Line >5' >10' N/A il N/A NA Steel 2 Foundation >5' >10' N/A N/A . LIFT STATION Manufacturer Capacity Curtain Drain None Noted Gal. Pump on level at Pump off level at High water alarm at Remarks in. in. in. Pump make and model Electrical Inspections performed by PIPE MATERIAL House to tank D3034Tank to D3034 Installer drainfield Northern Excavating Drainfield D3034 CO/MT D3034 Inspector Ben Schiller BENCH MARK (Assumed elevation) 100 ft Inspection 1� ' 8/30/17 Location and description dates: 2nd and 4th Bottom of siding on SW wall COMMUNITY DEVELOPMENT DEPARTMENT APPROVAL Engineer's Stamp Conditional Approval: Date4'�v4.1111,:.40...0 �?�4,�i Aft.. j,..-.4k *•.: T•H• �� .*,4 / . �...!` I4 • Ben F' in Schiller •�: e OV,V CE 12592 • e I Ap i : __ 1 Date 3-),?--1 Vire;•.30 .. Inspection Report_9-1-12.doc THE CASCADES B1 L6 PERMIT # OSP171214 PID # 078-321-06 0 > 0 L1 N U) U) N — — /-99.9 - - - (INSULATION 96.9 `-96.0 96.4-7r 6.4 1000 GAL 96.2 SEPTIC TANK V / ��92.0 TRENCH #1 oi-- 0 U 98.2 ORIGINAL& FINAL GRADE 0 —INSULATION ira x t.:kA"3 d Axa'i•'' Au: ' =s;'ti 4 G ` t t �; .'h 95.1 j " 95.1 a 3 s : t er knt .z.,n sVi y `r:• h�"�1? ,n„ta 47 _ w �` . }10 i+ ',V.It,, 1yro°1 94.6 ,Y kT , `4 . �1 }: � "J > ; t A� `t i"t .-P. h 94.6 1 45' -I NO GROUNDWATER 3/24/18 2' MOA-APPROVED FILTER SAND 79.5 co o�- TRENCH #2 0 U2 94.5 ORIGINAL& FINAL GRADE 0 INSULATION 90.3 r.A'x" , t " r a9 " a'gvHaI t r a,'A „C ��' n,n.c sM'�•c 1W.' , 90.3•ft � `4 , 4U1 � ' •^- A .. �r?`i `1• < tia: ° 89.8 ^ ° F ' F r iK Ti.t $ i�, ` a� kb . ^? , w•Aiii k:;' 6 %*^./ L�: 89.8 :,,tii�Mc4� �'.i+e,;�. � ��*.w�a:»�:�r e`h .w ,S ,Y"n:;?. •KS;. . �ti .. '1.sn t. 45' -I NO GROUNDWATER 3/24/18 2'MOA-APPROVED FILTER SAND 1179.5 r7 � of ACvi kk, I- ,00', g3P ��.- •,9 STA 0*:49 TM /\ •* PROFILE AS-BUILT W--- Il�'FCE •12592 ..k_,,...• G/Sf•, Mar 29.2018 ••�\ (NO SCALE) Ill'\\\\�``-NT THE CASCADES B1 L6 PERMIT # OSP171214 PID # 078-321-06 II THE CASCADES --. LOT 6 e............... :�: :• N \ APPROXD+IATE/STREAM LOCATION I (PER WATERSHED MGMT.) ---\\ 15' T&E EASEMENT i WELL / 1 I I• - - NEW TH FOR WATER // I II I MONITORING / 1 i FOOTING DRAIN \ \ \ 6-8' DEEP \ m © 1 I A C . \ O 0 . CO3 ••-<- . 1 SV14•V2 phi. S C01 TH#3 MT2 : �'9I- ,00 F 1000-GAL SEPTIC TANK Tk 2 : MT1 �\ �\ .• CO4 ��� \\��\�\® • 1 • CO2 I ALTERNATE �. • SITE �\\\ • � � A B 2x45' LONG x 5' WIDE, 0.5' FCO 7.0 26.2 EFFECTIVE DEPTH SV1 10.7 29.6 _ - ��\\\‘, ABSORPTION TRENCHES SV2k 2C0 26.7 29.1 LEGEND „�P q._ $ C01 32.7 35.0 CO-CLEANOUT /g.• �5� '.9 r MT1 49.6 53.2 200-DOUBLE CLEANOUT *:49IN �'t •10, CO2 75.1 76.1 / �••••'' �� • •'' / CO3 42.5 22,6 FCO-FOUNDATION CLEANOUT •••� ••••• MT2 55.1 45.4 FS FLOW SPLITTER VALVE Benja chiller 0 50 100 C04 75.2 67.8 MH-MANHOLE +r,���•. CE 12592 .•�`4rt m — — ME FEET MT MONITORING TUBE �s "�'Z'.2018 ..,;t. '•�`� SV-SEPTIC VENT 1V,PROFESSION�\'�.�� 1"=50' TH-TEST HOLE �N\\\� -y~ MUNICIPALITY OF ANCHORAGE ,� ALAkk DEVELOPMENT SERVICES DEPARTMENT- ..irke0).. .77�; -7J 4700 BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG - PERCOLATION TESTeen]a.7 chiller : ri l' • CE 12592 .•c�/ /�J'., War 29.2018 .• � LEGAL DESCRIPTION: LOT 6, BLOCK I, THE CASCADES SUBDIVISION '`l1�PROFESS10Np‘�.fr PERFORMED FOR: TROY DAVIS HOMES \\'���1'~ DATE: 3/17/18 PROJECT No.: PARCEL ID#: TECHNICIAN: J. MILLETTE DEPTH TEST HOLE 3 (feet) OB/OG SLOPE SITE PLAN 7 *'i s+.' s': h 3 . sc 117.5 '' 'l 4f 5 ?�1:1-' •� POORLY GRADED GRAVEL SEE SITE PLAN ^4:h WITH SAND 6 F s:{ xW•` GP/GW r ;!:5ter,, 7 ,31 ` 9 t?r ,17. ..t:9:s+:.YP � r:•..r,,. WAS GROUND WATER ENCOUNTERED? NO 10 Rw.;�.,.` ,.rt IF YES a WHAT DEPTH? - it. : C++.fa:+ <...,!,�.�,,,� DEPTH OF WATER AFTER MONITORING. NONE 11 "f;:4.`"V t:4:, 111 DATE OF MONITORING: 3/lam%18 '' ;-2P4 , DEPTH OF =v,'}':• GROSS TIME NET TIME NET DROP ;.:�{':.=~w DATE READING WATER 13 a:ig,:•• (MINUTES) (MINUTES) (INCHES) (INCHES) ;.�• ,-y;,'`�ems: 14—,;',=F ,X; TEST HOLE PRESOAKED PRIOR TO TESTING: 16 - 17 18 19 20 PERCOLATION RATE: (MIN/INCH) PERC. HOLE DIA. (INCHES) TEST RUN BETWEEN: FT. and FT. COMMENTS: TEST HOLE DUG FOR WATER MONITORING PURPOSES Jlaw GE ENGINEERING PO BOX 240773 ANCHORAGE,AK 99524 522-7773 677-7766(FAX) March 29, 2018 Municipality of Anchorage Development Services Dept- On-Site Water& Wastewater Program 4700 Elmore Rd Anchorage,AK 99507 Subject: The Cascades Block 1 Lot 6—2720 W River Dr Updated water monitoring information Dear On-Site Services Engineer: At the time of construction, the septic system on the above lot was built around TH#2, instead of TH#1, which had the same perk rate. Moving the trench downhill allowed the contractor to avoid putting in a lift station. Unfortunately,the groundwater measurements were several feet higher in TH#2. However,when installing the foundation for the new home,the contractor installed a footing drain to pull groundwater away from the foundation and direct it to the back of the house, to run down the slope toward the stream. After several months,there was a noticeable difference in the area all around the home and septic sites. The contractor dug a new test hole between the two septic trenches and placed a monitoring tube in. After the 7-day monitoring period, the hole was completely dry down to 15'. This is a vast improvement to the previous measurements,when groundwater was found at 6'. We request permission to use these new measurements and disregard the old record due to the changed circumstances. Sincerely, 444 �*eP n� 4 A *�l � Benjamin Schiller, PE • 49 Benja•' hiller j • CE 12592 ,. / ��T�G'� ••••.,3/29/18, " Wheaton Water Well, Inc. 1190 N. Wasilla-Fishhook Road Wasilla, AK 99654 (907)376-2041 Name: Troy Davis Homes, Inc. Address: 1689 Knik Goose Bay Road, Suite 400 City:: Wasilla State: AK Zip Code: 99654 Well Site: The Cascades Subdivision Lot: 6 Block: 1 Additional: Permit #OSP 171214 Well Depth: 63 ft.'1 From: To: Formation: Below Ground: 61 ft. 0 23 stickup, wet silt, gravel Above Ground: 2 ft. 23 26 boulder 26 44 wet silt, gravel Gal/Min: 10 44 48 boulder Static Level: Artesia 48 54 wet silt, gravel asing: 63' of 6" ID Steel 54 63 gravel, water iner Pipe: none Screened: non 'Perforated: non Grouted: Bentonite Depth: 20' + evelop. Method: Air t.._.�..- { WATER QUALITY TESTING se of Well: Residential i Coliform lie, CoI/100mL rilling Method: Rotary ' Nitrates 4g8 mg/L Arsenic N V ug/L luids Used: none -�--`�-'- ump Installed: none then: none Date Drilled: 8-30-2017 Driller: Ben Mattson 1 Development Services Department Building Safety Division • f rage On-Site Water & Wastewater Program PGE a oi`o 4700 Elmore Road z. P.O. Box 196650 ` inu l a " Mark Begich Anchorage, AK 99507 s E T Y Mayor www.muni.org/onsite (907)343-7904 Pump Installation Log Well Drilling Permit Number: SW 0SP171214 Date of Issue: 8-24-2017 Parcel Identification Number:078-321-06 Legal Description Property Owner Name& Address: The Cascades Lot 6 Block 1 Troy Davis Homes,Inc. 2720 W.River Drive 1689 Knik Goose Bay Rd#400 Eagle River,AK Wasilla,AK 99654 Pump Installation Date: 3-7-2018 Pump Intake Depth Below Top of Well Casing: 31 feet Pump Manufacturer's Name: Myers Pump Model: 3NFL52-12-P4-01 Pump Size 1/2 hp Pitless Adapter Burial Depth: 10.6 feet Pitless Adapter Manufacturer's Name: Harvard Pitless Adapter Installer: Unknown Well Disinfected Upon Completion? ❑✓ Yes ❑ No Method of Disinfection: Sterilene Comments: 12 gpm pump Pump Installer Name: Wheaton Water Well,Inc. 1190 N.Wasilla-Fishhook Road Wasilla,AK 99654 Attention: The pump installer shall provide a pump installation log to the DSD within 30 days of pump installation. N`<,rni.rrr o� MUNICIPALITY OF ANCHORAGE �17 On-Site Water & Wastewater ProgramS PO Box 196650 4700 Elmore Road �F .Y Anchorage,Alaska 99519-6650 Phone: (907)343-7904 Fax:(907)343-7997 http:Uwww.muni.orglonsite ' 44<hQR0E On-Site Water & Wastewater System Permit Permit Number: OSP171214 Effective Date: 8/24/2017 Work Type: WellSeptic Initial Expiration Date: 8/24/2018 Tax Code Number: 07832106000 Site Legal Address: THE CASCADES BLK 1 LT 6 G:0958 Site Mailing Address: 2720 WEST RIVER DR, Eagle River Owner: SNS HOLDINGS LLC Lot Size in Sq Ft: 98037 Design Engineer: ANDERSON ENGINEERING Total Bedrooms: 3 This permit is for the construction of: Disposal Field RI Septic Tank ❑ Holding Tank ❑ Privy E] 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 Received By: ,'• Date: 8 2 H ZD 17 Issued By: Date: 2A17. 0IZ MUNICIPALITY OF ANCHORAGE F� Community Development Department Phone: 907-343-7904 Development Services Division Fa _07 C43, ••7 On-Site Water & Wastewater Program �` '' ti -oO ON-SITE SEWER/WELL PERMIT APPLICATION a AUS ti 8 1017 Parcel I.D. 078-321-06 t h Property owner(s) Troy Davis Homes Day phone 1Z)" 9 o `' Mailing address 1689 S. Knik Goose Bay Road #400 Wasilla, AK 99654 Site address _NHN West River Drive Eagle River, AK 99577 ��7zo Legal description (Sub'd., Block & Lot) Legal description (Township, Range & Section) The Cascades, Block 1, Lot 6 Lot Size 98,037 Sq. Ft. Number of Bedrooms Three (3) APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING: (®all that apply) Absorption Field E Initial El Single Family (SF) (w/wo ADU) Septic Tank H Upgrade ❑ Duplex (D) ❑ Holding Tank El Renewal El Multiple Dwellings El Privy El (SF and/or D) Private Well ❑ Water Storage El THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: Distance: I certify that the above information is correct. I further certify that this is in accordance with applicable Municipal Codes. (Sig ature of operty owner or authorized agent) Permit/Rush Fees: 5(pC) + al S MI Waiver Fees: Date of Payment: MQ I(7 Date of Payment: Receipt Number: 0406(6 Receipt Number: Permit No. o5 'I 1 tv.4 Waiver No. Permit App_9-1-12.doc ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) August 24, 2017 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 Elmore Rd Anchorage, AK 99519-6650 Subject: Lot 6, Block 1, The Cascades Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 6, Block 1, The Cascades Subdivision intends to construct a new three- bedroom home on the property. We are therefore requesting a permit be issued for the construction of a new well and septic system to accommodate the home. The attached Site Plan and backup documentation identify the location and configuration of the proposed well and septic system along with the alternate site. All of the surrounding lots are currently vacant. No conflicts exist between the proposed septic system and well or the proposed septic systems and wells on adjacent lots. Drainage arrows are shown on the site plan showing the grade and direction of flow on the lot. The drainage pattern will not be changed as a result of this project. The test holes placed on the lot in the area of the absorption trenches and alternate site indicate poorly graded gravel with sand (GP/GW). The percolation rate of the soil was determined to be less than 1 minute per inch. Groundwater was found during the placement of the test holes, and the levels after monitoring are recorded on the test logs- one hole rose up to 5', and the other one was 10' down. A 2' thick MOA approved sand liner will be required to slow the percolation rate of the septic effluent. We are proposing to place a new 1,000-gallon STEP tank and two 45' long by 5' wide by 0.5' effective depth absorption trenches with a 2' thick MOA approved sand liner to treat and dispose of the effluent generated in the house. The elevation of the distribution line in the absorption bed will be 3' below the surface and the total depth will be 3.5'. A minimum of 3' of fill or 2" of insulation and 2' of fill will be placed over the absorption trench and 4' over the septic tank. The ground surface on the lot in the area of the septic system slopes to the northeast at a grade approaching (but not quite reaching) 25% with some cross sloping from the east. The new trenches will be constructed parallel with the contours of the slope as much as possible in conformance with Municipal requirements. The new septic system will be constructed a minimum of 100' from all wells and any surface water and 10' the proposed and existing water services in the area. If the system is constructed as designed, it will have no adverse impact: • On the wells in the area or those to be constructed in the future. • On existing septic systems in the area or those to be constructed in the future. • On reserve space, either surface or subsurface, on any lots located in the area. • On drainage patterns in the area. The current drainage pattern will be maintained. Sincerely, go► 'otokgi�A apiomgoi *'•• � a �i * 49111 0 11P Benjamin Schiller, P.E. �, . ► 4 ttli2, Attachments f�,�•'•fife '' �, � SUN /ALLEY SUBD. Tract D i _____ i• THE CASCADES I I LOT 6 I APPROXIMATE STPEAM LOCAT1Qld-1 (PER WATERSHED MG4fT.)• i I I 1 \ / iv .. .. / 1.. T&E EASEMENT—� : PROPOSED WELL i I 1 : r I I 1 I I 1 100' WELL RADIUS•. • "•'• / .••'.• `2,1 I 1 XI _ _L _ �'� ;-V 3-BDRM• HOME _,1 i XI /� v / 1000—CAL SEPTIC .\TANK x, / PUMP STATION•• ; .'' �/ \\ / �. J- 2Ix45' LONG x 5' WIDE, 0.5' FCO J I EFFECTIVE DEPTH ABSORPTION 'f V — ,C\ TRENCHES• K' STH#2 I I -\--'\-•' \ MT . . ail ALTERNATE `.`. '�' T ��. I I SITE �"\\\ `\`\ I�30.00' 30.00' 1 I NOTE: I I .����ky\\` NO SLOPES>25%WITHIN 50'OR '�G :4�p% ' GROUNDWATER WITHIN 100'OF THE rca.. 'If # PROPOSED SEPTIC SYSTEM ,If*:49 .*0/ ALL SURROUNDING LOTS ARE VACANT. NO LEGEND / CONFLICTS WITH WELLS OR SEPTIC SYSTEMS. /r Be min Schiller j 0 50 100 MT-MONITORING TUBE ���'�c•.• EL 12592 FCO-FOUNDATION CLEANOUT est Aug24.2017 •...**%.Vh! = = = = FEET 1�liF�PROFESS1 "�C TH-TEST HOLE \\�����`-- 1"=50' CO-CLEANOUT THE CASCADES SUB, BLOCK 1 LOT 6 DESIGN FACTORS: SYSTEM REQUIREMENTS: 450 GPD PEAK FLOW 5' WIDE TRENCH SYSTEM PERK RATE: <1 MIN/IN 1000-GAL SEPTIC TANK APPLICATION RATE: 1.0 GPD/SF (WI SAND FILTER) 450 GPD/ 1.0 GPD/SF /5'WIDE * 1.0 REDUCTION= 90 LF TRENCH THEREFORE: CONSTRUCT TWO ABSORPTION TRENCHES 45' LONG x 5'WIDE x 0.5' EFFECTIVE DEPTH. FLOW LINE ELEVATION IN TRENCHES TO BE 3' BELOW ORIGINAL GROUND SURFACE. TOTAL DEPTH TO BE 3.5' BELOW EXISTING GROUND. PROVIDE 3' COVER OR 2' COVER AND 2" INSULATION OVER ABSORPTION TRENCHES AND 4' COVER OVER SEPTIC TANK. 6 -.�! u 1 —n— l i =II l l 1 1 1■ 1 - 11— 1 III=I1-IIH - I - - - IIHI -II IIHI �I=111-1� lfl�l 111=1 I -1 111 I 2'-6" _E-I I1—i—III--vI=HH HiLI 1 1" PERFORATED PVC(HOLES DOWN) —III—III-11 -, 1 1 1= 1= 'Mil I II I 15 x i6"DIAMETER HOLES PER LATERAL I.I-I- IIII=1 X111- -I - @2-5'O.C- L6I1.=11.=.IL_ I I�I I . II II rI 6" f .. i r: iris i:r:i.Ai i i i v:.:.:.:•:.:.:.:.:.:r.s:.:.:•:•:•:►_•_..:.:.:•:.ci "'" _a r4-ys.::' '"„.„- DRAINFIELD ROCK 'r..3`...s.ti �„i.. •,,.�,iajal},F�.� � i..�cR f y.a�v.�� }' 'M`�.-..,.A, v `r 4' TO GROUNDWATER 1= t, r==•=' ' 6' TO BEDROCK OR t ;c;;tkx'f5t-*' _i.F. '•R-:�skke:c-;;,.�f :.:�;.V IMPERMEABLE LAYER '.s S . :"«•> `'%�s .,'wr".•.i .:'1--ai+1�iN,`.... e� t7.;..4,.:—;:,$.15'43:73;... Jn 1t:t•:�;•: =i'i�f1'y,..:r..:`.+.' �Y A `a�M,?a. : :.rte. ;,>-ri-fci:��-s•:ti � ..:�.�h q i-4•*.JC.`, .moi.v:.n•:t.5%1,W;i'.' .:s E5' I 2' MOA-APPROVED FILTER SAND - 5' WIDE TRENCH SECTION P 9fZS.:fAt`..Iv (NO SCALE) �g�.. 9+a NOTES: ;*' ,•, 1H .''ft GRADE AREA OVER TRENCH TO DRAIN AWAY frop. MIN 6'SEPARATION FROM BEDROCK #. Benj.II n Schiller :Q MIN 4' SEPARATION FROM GROUNDWATER 0t9FC,sl• A �2692.•..�• MIN 100' SEPARATION FROM NEARBY WELLS I�iF,picg.OFE.....`...� MIN 100' SEPARATION FROM SURFACE WATER OR STREAMS ��\N����"*”- 4 MUNICIPALITY OF ANCHORAGE eosakitiztttI,i,, DEVELOPMENT SERVICES DEPARTMENT ��,P� • • .Y ,�44 4700 BRAGAW STREET ANCHORAGE, AK 99519-6650 `I, ;• ff s' : 49 h �� 1 SOILS LOG - PERCOLATION TEST i ..• f711 .. ' �: BEN SCHILLER t LOT 6, BLOCK I, THE CASCADES SUBDIVISION ��s'•., CE-12592 �= LEGAL DESCRIPTION: � PERFORMED FOR: TROY DAVIS HOMES �f `����••�•• + ,4•••.4,11. DATE: 6/8/16 PROJECT No.: h ff y;, +ice PARCEL ID#: TECHNICIAN: J. M I L L E T T E Professional Engineers Stamp: DEPTH TEST HOLE 1 (feet) OB/OG SLOPE SITE PLAN 1 a 4 2 d 3 4 a 4SEE SITE -��. 5 POORLY GRADED GRAVEL x WITH SAND 1 6 - d GP/GW 4 7 a 4 4 • 8 9 4 4 WAS GROUND WATER ENCOUNTERED? Y 1 0- d IF YES 4 WHAT DEPTH', II DEPTH OF WATER AFTER MONITORING: 10' 1 1 C DATE OF MONITORING: 8-13-17 BOH@11.5 E 12— GROSS TIME NET TIME DEPTH OF NET DROP 13— DATE READING WATER (MINUTES) (MINUTES) (INCHES) (INCHES) 14— TEST HOLE PRESOAKED PRIOR TO TESTING: 15— 6/8 1 7:05/7:08 3 6"/Dry 6" 16 2 7:09/7:11 3 6"/Dry 6" 3 7:12/7:15 3 6"/Dry 6" 17 4 7:16/7:19 6"/Dry 6" 18— 5 7:20/7:23 3 6"/Dry 6" 19— 6 7:24/7:27 3 6"/Dry 6" 20 PERCOLATION RATE: 0.5 (MIN/INCH) PERC.HOLE DIA. 6" (INCHES) TEST RUN BETWEEN: 3.0 FT. and 4.0 FT. COMMENTS: MUNICIPALITY OF ANCHORAGE 4.0i aaink' DEVELOPMENT SERVICES DEPARTMENT `��P•(E• •••..,,Vf+*• 4700 BRAGAW STREET ANCHORAGE, AK 99519-6650 ir�:.••,• 11 • Z4. 49t •'ti*1 � SOILS LOG - PERCOLATION TEST �• "'•� •• 71 '; BENJAH o os CHILLER : ~ II C' NO. 12392 c� LEGAL DESCRIPTION: LOT 6, BLOCK I, THE CASCADES SUBDIVISION 1 ' �'„ PERFORMED FOR: TROY DAVIS HOMES •44 .••••$:.#1.tiSIe DATE: 6/8/16 PROJECT No.: Illus �o6 PARCEL ID#: TECHNICIAN: J. M I LLET TE Professional Engineers Stamp: DEPTH TEST HOLE 2 (feet) OB/OG SLOPE SITE PLAN 1 2 d 4 0 3 ° 4 4 5 ° SE SITE n, POORLY GRADED GRAVEL lb 6 n WITH SAND I GP/GW a 7 d 4 d 8 _ _ BOH @ 8' 9 10 WAS GROUND WATER ENCOUNTERED? Y. IF YES @ WHAT DEPTH'' 7' S DEPTH OF WATER AFTER MONITORING: 5' L 1 1 DATE OF MONITORING: 8 13 I1 12 GROSS TIME NET TIME DEPTH OF NET DROP 13 DATE HEADING (MINUTES) (MINUTES) WATER (INCHES) (INCHES) 14— TFST HOLE PRESOAKED PRIOR TO TESTING: 15— 6/8 1 7:40/7:42 2 6"/Dry 6" 16 2 7:43/7:45 2 6"/Dry 6" 3 7:46/7:48 2 6"/Dry 6" 17— 4 7:49/7:51 2 6"/Dry 6" 18— 5 7:52/7:54 2 6"/Dry 6" 19 6 7:55/7:57 2 6"/Dry 6" 20 PERCOLATION RATE:0.33(MIN/INCH) PERC. HOLE DIA. 61� (INCHES) TEST RUN BETWEEN: 2.5 FT. and 3.5 FT. COMMENTS: 11 • N SUN VALLEY SUBD. .----.- illiks.,,,.. Tract D __________ - 11814.5 8 4.�` / 1779.8 S 89'55•51"E 266.4 1779.8 / 1 1 - _� � • APPROXIMATE STREAM LOCATIONI (PER WATERSHED MGMT.) 1 !'^ / 15' T&E EMENT I •• • z v1, r I 0 m0 �/� O N VI cO Nrr W al • • � C -a " ip O m A 23.0' Cb.. X1 ELEVATION TABLE 50' STR4M PROTECTION SETBACKS "c.1- ��C� N o_o , Q EXISTING PROPOSED Al 27.0' Il 73 1809.7 A 1811.8 1811.0 8 1811.8 �� L- 15-B I 1812.3 C 1811,5 10.0'o N 3.9% 1811.0rrl 1812.8 D .7.8'11.8 1812.8 " 1811.8 K C 14.14.5 F 1814.04_01).11-.A... at6.4 G 1819.0 F.F. EL. 1822.0 J- 6.° E a 1818.2 H 1821.8 �? 1819.6 I 1821,8 GARAGE EL. '1812.0 33.0+ 1816.6 J 1821.8 6.0' x 9.0 PORCH H G F .:11.\ 1817.7 K 1821,8 1816.9 L 1816.8 1814.6 M 1816.8 1813.0 N 1811.8 Lot 6 1811.3 0 1811.8 . 1808.0 798.037 s.f. 2.251 Acres o C Z I{{ C 1872.0 TBM - TOP OF SJB REBAR CO f C 1872.0 EL. 1822.0 o N 89'55'51'W 275.31' C 30.00' o In o Lot 5 NOTE: SEE ENGINEERS PLANS FOR WELL AND SEPTIC INFORMATION PLOT PLAN X AS BUILT SCALE 1* = 40' GRID NW 958 Project No. 17-187/81 11500 Daryl Avenue. Anchorage, Alaska 99515-3049 Lang & Associates , •inc . (907) 522-6476 Phone (907) Fax Q4o �4� LEGEND Professional Land Surveyors kenOlangsurvey.com v(� •, , (907) an 522-4625urvey.com �'� .• :76V•16104.8 EXISTING ELEVATION jonat4=2`.IR7. •••'-- 103.0 PROPOSED ELEVATION I hereby certify that I have surveyed the following described property: 0 • 49TH �* Lot 6. Block 1. THE CASCADES SUBDIVISION (Plat No. 94-128) SURFACE DRAINAGE Anchorage Recording District, Alaska, and that the improvements situated thereon ore within the property lines and do not encroach onto the property adjacent thereto, that 0 LOT COVERAGE = 1.64% no improvements on the property lying adjacent thereto encroach on the surveyed 1A,3 • KENNETH G. : �� premises and that there are no roadways, transmission lines or other visible �, f� easements on said property except as indicated hereon. Y a `c7 1. '1Q,,, '••.�S-5202.••. yJp� Dated this the f��y, Day of , - . at Anchorage, Alaska Q O c It is the responsibility of the owner to determine the existence of any easements, �DOpoQa ' covenants, or restrictions which do not appear on the recorded subdivision plat. AECC963 • 84i •_11c-7 Munic paij*y ro A i, _ • �, • < ''( °Y 1 Yp On-Site' - e`,' `- =ro ram < ' 1449 1e 0 ,30x,11- At TY z O1 6 8 /4 Certificate of On-Site Systems Approval Parcel I.D. 078-321-06 Expiration Date: 6-2-q`t 1. GENERAL INFORMATION Complete legal description The Cascades Block 1 Lot 6 Location (site address) 2720 West River Dr Current Property owner(s) Troy Davis Homes Inc. Day phone (907) 310-2501 Mailing address 1689 Knik Goose Bay Rd Suite 440 Wasilla, AK Real Estate Agent Day phone 2. TYPE OF DWELLING: El Single Family (w/wo ADU) ❑ Duplex El Multiple Dwellings (Single Family and/or Duplex) 3. NUMBER OF BEDROOMS: 3 4. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Individual Well Individual 0 Individual Water Storage ❑ Holding Tank ❑ Community Class Well El Community ❑ Public Water System ❑ Public Sewer ❑ WaiverNariance request for: Distance: Received by: L j /(ft}11,L Date: /2--q// • COSA to be released to the engineer,unless otherwise requested by the engineer. COSA Fee $ (vq t y t TY= 6 Waiver Fee $ Date of Payment J/ - 1t s Date of Payment Receipt Number 0561061. Receipt Number COSA# 06C-1 g 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 Forge Engineering Phone (907) 522-7773 Address PO Box 240773 Anchorage, AK 99524 Engineer's Printed Name Benjamin Schiller, PE Date 3/21/18 9F.A/4;A :f-" 0 � • m 6. DSD SIGNATURE f./` System #1 Approved for bedrooms A 01'• y, BenaSchiller <� System #2 Approved for bedrooms 4 1`` ., c a3 92 ....4e, 41,1 Disapproved 1/4DPROFESSVik Conditional approval for bedrooms, with the following stipulations: iSb ON-SITE �sQ WATER AND cc" WASTEWATER oz cr‘ PROGRAM . ?" ":R\I�C�c C Original Certificate Date: 3 - Z G 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•rpgistbred 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 X Nitrate Advisory Septic System Advisory Arsenic Adviso'ry ' Well Flow Advisory Other t, COSA blue sheet j. c If more than 1 septic system is on the lot: COSA Checklist# of Structure served by this system Certificate of On-Site Systems Approval Checklist Legal Description: The Cascades Block 1 Lot 6 Parcel ID: 078-321-06 A. WELL DATA Well type Private If A, B, or C provide PWSID# Well Log (Y/N) Y Date completed 8/30/1 7 Sanitary seal (Y/N) Y Wires properly protected (Y/N) Y Total depth 63 ft. Cased to 63 ft. Casing height (above ground) 24 in. FROM WELL LOG AT INSPECTION Date of test 8/30/17 Static water level Artesian ftft. Well production 10 g.p.m. g.p.m. WATER SAMPLE RESULTS: Coliform Neg colonies/100 mL Nitrate 0.688 mg/L Arsenic ND ug/L Date of sample: 3/718 Collected by: Wheaton Water Wells B. SEPTIC/HOLDING TANK DATA Tank Type/Material Septic/SteelDate installed 8/30/17 Tank size 1000 gal. Number of Compartments 2 Cleanouts (Y/N) Y Foundation cleanout(Y/N) Y Depression over tank (Y/N) N High water alarm (Y/N) N Date of pumping Pumper New Construction C. ABSORPTION FIELD DATA Date installed 8/30/17 Soil rating (g.p.d./ft2 or ft2/bdrm) 1.0 GPD/SF System type 5-Wide Length 4545 ft. Width 5/5 ft. Gravel below pipe 0.5/0.5 ft Total depth 3.5 4.2 ft. Eff. absorption area 450 ft2 Monitoring tube Y Depression over field N Date of adequacy test New Const 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) If yes, give date D. LIFT STATION Date installed Size in gallons Manhole/Access (Y/N) "Pump on" level at in. "Pump off' level at in. High water alarm level at in. Datum Cycles tested Meets alarm&circuit requirements? E. SEPARATION DISTANCES WELL ON LOT TO: Septic tank/lift station on lot >100' On adjacent lots >100' Absorption field on lot >100' On adjacent lots >100' Public sewer main >75' Public sewer manhole/cleanout >100 Sewer/septic service line >25' Holding tank >75' Animal containment areas >50' Manure/animal excrete storage areas >100' SEPTIC/HOLDING TANK ON LOT TO: Building foundation 10Property line >5 Absorption field >5 Water main >10' Water service line >10' Surface water >100' Wells on adjacent lots >100 ABSORPTION FIELD ON LOT TO: Property line > Building foundation >10 Water main >10 Water Service line > Surface water >1�� Driveway, parking/vehicle storage >10' Curtain drain None Noted Wells on adjacent lots >100' F. COMMENTS G. ENGINEER'S CERTIFICATION :3, ..ozON\�1�, kk / certify that / have determined through field inspections and ork.;•' ;�' review of Municipal records that the above systems are in tr.. TM• �N ,��i conformance with MOA COSA guidelines in effect on this date. .., ,...... 0 Engineer's Printed Name Benjamin Schiller, PE , . , _,_: 3/21/18 r •, Ben;a in Schiller / Date 0 -P-*. Cr 12 92 . �/ s4,r,"ari:1 i COSA brown sheet 10-10-12.doc . N SUN VALLEY SUBD. .• Tract D �_ _�` II S 89'55'51"E 266.4r -1–I / • y , ______ .. . • I N / - / \r APPROXIMATE STREAM LOCATION (PER WATERSHED MGMT.) • • / / WELL \ 15' T&E EASEMENT I Op.• I / '' ' • • '• • RpT f cTil'F Z • Rqp� u'o I o o US / V) 6 \ • 50' STREAM ii PROTECTION SETBACKS �' / / W < \ N OP O .p • \ / 0 2 / o X40. a 142.1' ` a 6.0'x7.0' PORCH XI cp ,o> 6• 82.6' 0. o 3 STORY RESIDENCE :LF Lot 6 / • 9� • 98.037 s.f. 2.251 Acres _ . • SEPTIC PIPES . • - i'. I I rn C Z Cr) C . 0 N 89'55'51"W 275.31' I 30.00' 30.00' 0 P1 0 Lot 5 I I 1- — PLOT PLAN AS BUILT X SCALE 1" = 40' GRID SW 0948 Project No. 17-187/B5 11500 Daryl Avenue. Anchorage, Alaska 99515-3049 Lang & Associates , inc . (907) 522-6476 Phone ooQp .‘O (907) 522-4625 Fax o Professional Land Surveyors kenOlangsurvey.com jonathonOlangsurvey.com '` • :(16A71 I herebycertifythat I have surveyed the followingdescribedproperty: Oo�P• �)\ Q LOT 6, BLOCK 1, THE CASCADES SUBDIVISION (PLAT 94-120) * . 49TH �� • O4 Anchorage Recording District, Alaska, and that the improvements situated thereon ore within the property lines and do not encroach onto the property adjacent thereto, that D no Improvements on the property lying adjacent thereto encroach on the surveyed �� KEN H NG premises and that there are no roadways, transmission lines or other visible t^�, • o 49 easements on said property except as indicated hereon. ' O Doted this the tn� ) Day of 1.1p,al-`k %''��l 4Wn1 S-520 .•'' yJp �= at Anchorage, Alaska u4�0RO�SSIONAI � � It is the responsibility of the owner to determine the existence of any easements, 040000/0 covenants, or restrictions which do not appear on the recorded subdivision plat. AECC963