Loading...
HomeMy WebLinkAboutSLY-FOX S-11226-15-11226-1 SLY -FOX Municipality of Anchorage • •r ••, Development Services Department i Building Safety Division _ i — sucrr MEMORANDUM DATE: January 15, 2004 TO: Jerry T. Weaver, Jr., Platting Officer, CPD FROM: a Ics Cross, PE, Program Manager, On -Site Water & Wastewater SUBJECT: '?"Comments on Cases due January 15, 2004 The On -Site Water & Wastewater Program has reviewed the following cases and has these comments: C:S =112261' Sly -Fox Subdivision No objections. S-11227-1 Thomas L. Boyle Subdivision No objections. S-11231-1 Wonder Park #4 No objections. S-11232-1 Stuckagain Heights. The water and wastewater disposal systems serving these properties have not been permitted nor approved by the MOA. Prior to approval of this request, these systems must be shown to meet municipal standards. Please fill in the information asked for below. PETITIONER' PETITIONER REPRESENTATIVE (IF ANY) Name (last name iirsQ c7E t t Name f last name first) MaiWg Address Q C Making Address c AK. Mlot Zoning: Contact Phone: Day: Night: 3,jam oZ a Contact Phone: Day: Night: FAX: 9 1 FAX: E-mail: GC 2c a C 1 r'(El 6c c E-mail: 'ReponaddWmlpeuix)mrsordisc wotnerco-pv*iersonsupppmentalbrm. Failure to dwit;e other benefival interest owners may delay processing of this appbcauon. PROPERTY INFORMATION Property Tax #ioma000-000): Site Street Address: / o E K Current legal description: (use addmonal sheet if necessary) L c07-5 a " 3 St -Y rox SuB7(vlsfo// 'PL#ir A/o. 79 -(94 Zoning: Acreage: 9 (e Grid # 1 # Lots: Z, # Tracts: Total #parcels: I hereby certify that (I am)(I have been authorized to act for) owner of the property described above and that I petition to subdivide it in conformance with Title 21 of the Anchorage Municipal, Code of Ordinances. I understand that payment of the application fee is nonrefundable and is to cover the costs associated with processing this application, and that it does not assure approval of the subdivision. I also understand that assigned hearing dales are tentative and may have to be postponed by Planning Department staff or the Platting Board, Planning and Zoning Commission, or the Assembly for administrative reasons. I �:ia7tZab9�al,'i�1= )sed legal description: fuse addnanal sheet in necessary) /-07- aR SLy Fox Su,Son/ I # Lots: 1 I # Tracts: I Total # Darcels: I Accepted by I Poster&Affidavit I Fee I Case Number Page 2 Appkcation for Prehrrvary Plat continued COMPREHENSIVE PLAN INFORMATION ❑ None Anchorage 2020 Urban/Rural Services: ❑ Urban ❑ Rural Anchorage 2020 West Anchorage Planning Area: ❑ Inside ❑ Outside Anchorage 2020 Major Urban Elements: Site is within or abuts: ❑ Major Employment Center ❑ Redevelopment/Mixed Use Area ❑ Town Center ❑ Neighborhood Commercial Center ❑ Industrial Center ❑ Transit - Supportive Development Corridor ❑ 500 year Eagle River-Chugiak-Peters Creek Land Use Classification: ❑ Commercial ❑ Industrial ❑ Parkslopens space ❑ Public Land Institutions ❑ Marginal land ❑ Alpine/Slope Affected ❑ Special Study ❑ Residential at _ dwelling units per acre Waived b Girdwood- Tumagain Arm ❑ Commercial ❑ Industrial ❑ Parkslopens space ❑ Public Land Institutions ❑ Marginal land ❑ Alpine/Slope Affected ❑ Special Study ❑ Residential at _ dwelling units per acre ENVIRONMENTAL INFORMATION (AO or portion of site affected) Wetland Classification: ❑ None ® "C" 13"B' ❑ 'A' Avalanche Zone: 9 None ❑ Blue Zone ❑ Red Zone Floodplain: ® None ❑ 100 year ❑ 500 year Seismic Zone(Hardinq/Lawson): im'1' [3 NT 0'3" 004" 005" RECENT REGULATORY INFORMATION (Events mat have occurred in hast 5 yearsfor eo or portion of sae) ❑ Rezoning - Case Number. ❑ Preliminary Plat ❑ Final Plat - Case Number(s): ❑ Conditional Use - Case Number(s): ❑ Zoning variance - Case Number(s): ❑ Land Use Enforcement Action for ❑ Buildin or Land Use Permit for ❑ Wetland reit: ❑ Army Corp of Engineers ❑ Municipality of Anchorage APPLICATION CHECKLIST Fee: Plat: Copies ❑ 42 (long plats) ® 32 (short plats only) ❑ 8%x11 reduced copy Other maps ® Aerial photo ® Housing stock Ell Zoning Mandatory on plat depictions: ❑ Pedestrian walkway ❑ Landscaping uired by zoning Property Title: CC Certificate to Plat Additional required documents unless specifically waived by Platting Officer. KI Site topography (4 copies minimum) Waived by ❑ Soils investigation and analysis reports (4 copies minimum) Waived by ❑ Subdivision drainage plan Waived b 20-003 (Rev. 05102)'Back U WAIVER OF SURVEY TO ACCOMPANY PLAT APPLICATION FOR ABBREVIATED PLAT Chapter 21.15.125 ... a field survey may be waived by the Municipal Surveyor for subdivisions that merely eliminate interior lot lines." (A.O. 78-50) In accordance with the above referenced excerpt of the Municipal Land Use Regulations. the request to waive the requirement of field survey on the following property is granted: e,41- 4 5 -0-M ".7 0,/ -71-5zc- �,s ' Z ,�I,✓a ,3, PETPfiONER'S REPRESENTATIVE DATE MUNICIPAL ME NARDMR —LAWSON ASSOCIATES SOIL INVESTIGATION SLY -FOX SUBDIVISION GREATER ANCHORAGE AREA BOROUGH ALASKA JOB NO. 5518,001.08 Prepared for M & B ENGINEERING 8505 Rangeview Anchorage, Alaska 99504 by //� ' �� lawl KY M. ENGLAND Civil Engineer 1943-E HARDING-LAW SON ASSOCIATES 127 West Fireweed Lane Anchorage, Alaska 99503 279-7011 December 17, 1973 'S 112 2 6 JM 1 9 20M OS NARD..aO—LAWSON ASSOCIATES INTRODUCTION This report presents the results of our soil investigation of the Sly -Fox Subdivision, Greater Anchorage Area Borough, Alaska. The sub- division consists of four lots, each about 50,000 square feet in area, located in the SW1/4, NE1/4, Section 24, Township 12 North, Range 3 West, Seward Meridian. The lots will be developed for single family residences and in- dividual wells for water supply and septic tank type sewage disposal facili- ties are planned for each lot. The purpose of our investigation was to explore the soil and ground water conditions in the subdivision by drilling a test boring on each lot.- FIELD ot: FIELD EXPLORATION AND LABORATORY TESTS We drilled test borings at the locations shown on Plate 1 using a Nodwell mounted, hydraulic rotary rig. The borings were advanced to depths ranging from eight to 20 feet using six-inch continuous flight augers. Our field engineer directed the exploration work, examined and logged the ma- terials encountered and obtained disturbed samples from the auger bit for visual classification and laboratory grain size analysis. The materials encountered in the borings, sample locations and other data are presented on the Logs of Borings, Plates 2 through 4. The soils are classified in accordance -with Soil -Classification.Systemtdescribed-on-klate-5- In our laboratory we performed a grain size analysis on a sample repre- sentative of the material ten feet below the surface at each boring location. The results of these tests are presented on Plates 6 and 7. - 1 - NA..JINO-LAWSON ASSOCIATES SITE AND SOIL CONDITIONS The subdivision is presently undeveloped and is overgrown by scat- tered white spruce and locally thick alder underbrush. The ground sur- face is irregular and hummocky and generally slopes downward from east to west. The steepness of the downslope increases on the rear (west) half of the lots. An unimproved trail adjoins the east side of the lots. At the time of our exploration, the ground surface was blanketed by about four inches of loose snow and the surface soils were not frozen. The soil conditions encountered in our borings consists of a surface layer of forest litter about two feet thick underlain by silty,.sandy and gravelly soils to the depths explored. The soils are of glacier origin, are chiefly till and were apparently deposited in this area as lateral moraine. Scattered cobbles (material in the 3 to 12 inch size) and boulders (over 12 inches) are also present. Ground water was encountered in two borings (Boring 1 and 3, 3A) while the remainder of the borings were dry. We judge that the ground water is a localized seepage condition and that the water is migrating downslope confined in thin lenses of pervious sand and gravel. DISCUSSION Based on our investigation, it is our opinion that the lots are suitable for development for single family homes. Sewage disposal by septic tank - drainfield methods are feasible but the presence of natural seepage and silty soils on some of the lots will require that the systems be carefully designed. Percolation tests should be performed in each drainfield location to determine its size, - 2 - MARO,...I-LAWSON ASSOCIATES depth and layout and where natural seepage is present, subdrains may be necessary upslope to intercept and conduct groundwater away from the sewage drain field. We recommend that percolation test be delayed until the house and well locations are known and the size and orientation of the houses and any grading requirements have been determined. PLATES The following plates are attached and complete this report: Plate 1 Plates 2 through 4 Plate 5 Plates 6 and 7 Boring Location Plan Logs of Borings Soil Classification Chart Particle Size Analysis - 3 - M a 0 z SCALE 1" a 100' LOT 1 I TEST -4 BORING' 3 ©3 LOT 2 LOT 3 LOT 4 1 EXISTING RESIDENCE HARDING-LAWSON ASSOCIATES ® Consulting Engineers and Geologists Job No 5518,001.08 Appr• Mme Date 12/73 -4- i TRAIL STREET I t� E- E- M y G O U NOTE: Locations of borings determined by pacing and are approx- imate only. ' H & B Engineering dtd. INov. 1973 dwg 5283. I I BORING LOCATION FLAN PLATE SLY -FOX SUBDIVISION BOROUGH OF ANCHORAGE 1 Shear Strength (lbs/sq Ft) Particle size Malysis a LOU OF BORING 1 v ?-£ o. Equipment 6" Flight Auger C a n. E 0�j p $' p ,° Elevation Date 11-26-73 0 FOREST LITTER (Pt) roots, leaves, humus ROIN SILTY, GRAVELLY SAND (SM) with occasional cobbles and/ 511* -Lor boulders water level 11-26-73 9.6 t0v I -i seepage @ 10' �ARDING-LAWSON ASSOCIATES ® Consufting Engineers and Geologists JobNo.5518,001.08 Appr ]me Date -12 _173 GRAY GRAVELLY SILT. (ML) LOG OF BORING 2 Equipment 6" Flight Auger Elevation Date 11-26-73 FOREST LITTER (Pt) roots, leaves, humus BRO14N SILTY GRAVELLY SAND (SM) GRAY SILTY SAID (SM) slight (about 108) gravel increasing gravel content @ 15' refusal on cobble or boulder @ 170. No free water encount. LOG OF BORINGS 1 & 2 SLY -FOX SUBDIVISION PLATE 2 U LC OF BORING 3 Shear Strength (lbs/sq Ft) 5 m a E o. Equipment -6" Fliaht Auaer 0 � V a $' p in Elevation Date 11-26-73 V FOREST LITTER (Pt) roots, leaves, humus water level 11-26-73 S BROIPN SILTY SANDY GRAVEL (04) GRAY GRAVELLY.SANDY SILT (ML) refusal on cobble or boulder @ 8' 10 15 LOG OF BORING 3A Equipment 6" Flight Auger Elevation Date 11-26-73 0 FOREST LITTER (Pt) roots, leaves, humus GRAY SANDY SILT (ML) slight •(about 108) gravel �`— water level 11-26-73 Part'cle 31ze aly is 14.2 1 lense of sandy gravel @ 12' _ _ seepage—�12' .-- increasing gravel content 15 @ 15' HAR13ING-LAWSON ASSOCIATES LOG OF BORING 3 & 3A PLATE ®. Consulting Engineers and Geologists SLY -FOX SUBDIVISION 3 Job No 5518,001.08 Appr:_me Date 12 7 3 -6- Shear Strength (lbs/sq ft) .-. u U u ,- 5 v 2- s o N �N C u° o o Lon Orr 6.4 - 1 L G OF BORING 4 Equipment 6" Fliqht Auqer Elevation Date 11-26-73 FOREST LITTER (Pt) roots, leaves, humus GRAY GRAVELLY SANDY SILT (ML) GRAY SILTY GRAVELLY SAND (SDI) with occasional cobble or boulder sizes No free water encountered LOG OF Equipment Elevation Date HARDING-LAWSON ASSOCIATES Q) • Consulting Engineers and Geologists bb No. 5518,001.08 Appr. jmeDate 12/73 LOG OF BORING 4 SLY -FOX SUBDIVISION PLATE El -7- 1 Part cle ize alys s' .-. u U u ,- 5 v 2- s o N �N C u° o o Lon Orr 6.4 - 1 L G OF BORING 4 Equipment 6" Fliqht Auqer Elevation Date 11-26-73 FOREST LITTER (Pt) roots, leaves, humus GRAY GRAVELLY SANDY SILT (ML) GRAY SILTY GRAVELLY SAND (SDI) with occasional cobble or boulder sizes No free water encountered LOG OF Equipment Elevation Date HARDING-LAWSON ASSOCIATES Q) • Consulting Engineers and Geologists bb No. 5518,001.08 Appr. jmeDate 12/73 LOG OF BORING 4 SLY -FOX SUBDIVISION PLATE El -7- 1 I- of I•� --J L—•--sr�c 'D9'.7C G� .�Is•D4 W� �N VIS Q1^ 4;,O --r 99Dd/ D FIFTEENTH I N .;! 2 !I to 9 0 I.I II 'I 1 \1 I� I,I I� 2 s I II 6 II � I II I® Avenue 3 c c i' 1 \1 I,I I� 2 s I II 6 II � I II cA V 0 1 � 1 ,. 0, 7-` h' I � '� •%moi ` i o sot. as c c i� i-. .��a�r��J--/��� ��t����-�� �—T%11>$•B•�3 E 'SOr'�'.. n1F9� • 15'W 996.0/ ... r [ s cA 0 1 h' ! i� i-. .��a�r��J--/��� ��t����-�� �—T%11>$•B•�3 E 'SOr'�'.. n1F9� • 15'W 996.0/ ... r [ /1304 S11226 9 2004 Aerial Topographic Map —Anchorage- Grid # 2640, 2641, 2740, 2741 Short Plat Summary of Action January 19, 2004 �w11226'61y-Fox Subdivision Approval of the plat for 18 months subject to the following conditions: 1. Resolving utility easements. 2. Resolving with Project Management & Engineering the need to relocate the 20 -foot drainage easement to coincide with the stream thread. 3. Providing a 25 -foot stream maintenance/ protection easement setback along both sides of the stream as required by AMC 21.45.2 10 and AMC 21.80.040. 4. Placing the following note on the plat: "No structures, fill, paving, vehicles or other materials may be placed within the 25 -foot stream maintenance and protection easement. No vegetation may be cleared or otherwise significantly disturbed within the 50foot wide stream maintenance and protection easement." S-11227 Thomas L. Boyle Subdivision Approval of the plat for 18 months subject to the following condition: Resolving utility easements. 5-11231 Wonder Park Add. No.4 Subdivision Approval of the plat for 18 months subject to the following conditions: Resolving utility easements. 2. Resolving with AWWU the disconnection of any unused or unnecessary service connections. 3. Showing the correct designation of the 10 -foot easement along the east property boundary, not a right-of-way, but a utility easement. 4. Resolving with State DOT/PF, the correct representation of right-of-way for the Glenn Highway and Boniface Parkway as shown on STP -0543(3) right- of-way plans.