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1116 2ND AVE S.PDF111111111111 4833 1116 2ND AVE S STANDARD DRA1'<.GE PLAN - l 707X3 CATCH DA`SIN: 3 5 M)L3"IT3O(o1 T&rNCN L.orNC-rH OVAL, y > TAIZNC►1 COv['S> v i1� -nr- UWC LCVirL TxCNCH 4rrror PIP- CAP TEE W/ 44LOK6 L`C5 SYSTEM CROSS-SECTION MIRAFI SOX oK UI\/E� LT T(OB LA,, Ec) oN w,�,5�4tfc) io=K TP,El,CH COVER----, GRAVEL 4 D►AM F PF P►PE - 1 ,•0. TRENCH CROSS-SECTION srRt�� Fitt• M ,.)UN 26 1987 PERMIT COUNTER INFILTRATION' SYSTEM PAGE I OF 2 for n �� C, O& 4(3 - �fitC� location weer C-y-2.e_\< plan by bet '-_ phone 77 - 73� da to 60 - 25 - ?7 DESIGN DATA Trench Perc LF per Imperm Trench Number Rate 1000 sq.ft. Are ems„ Re � 4 iI-= �� NOTES 1. Call Engineering Division (771-3202) .for prebackfill and final inspections. 2. Respcnsibility for operation and maintenance of drainage systems on private property is the responsibility of the property owner(s). Preventive maintenance consists of preventing soil and other materials frcn entering trench during construction as well as after construction. Catch basins should be cleaned of floating material and sediment at regular intervals (at least twice per SITE PLAN. SCALE: NOTE: 00 NOT USE INFILTRATION SYSTEM ON SLOPS OVER 15 PERCENT (15 FOOT RISE PcR 100 FE=T HORIZONTAL) RECF IV E® ,SUN N6 1987 PERMIT COUNTER STANDARD DRAINAGE PLAN INFILTRATION SYSTEM PAGE 2 OF 2 00 0 r N •r Of CITY of EDMONDS SIDE SEINER For Inspection Call 771-3202 PERMIT 'a 07810 // �� r b Address of Construction: //(p �? /��'�. J Property Legal Description (Include all easements): L 0 -t L/ Owner and/or Builder: ��P G�c.J c�C�� %�f�'�i-e_s_ -- ��/(' - -- PERMIT NO Contractor & License No: "o-, e-, _,Jd i{ / `� CD Single Family Residence 51 Multi -Family (No. of Units ) Commercial (No. of fixture Units ) Invasion into City Right -of -Way: No ✓tsYes (If Yes, Right -of -Way Construction Permit required. Call One -Call -Center (1-800-424-5555) before any excavation.) Cross other Private Property: No Zs (If Yes, easement required, attach legal description and county easement number.) EDMONDS PLEAS�E—RAD THE ITEMS LISTED ON THE BACK TREATMENT PLANT v n "I / / A -r,t&tify tl.fa I have read and 'shal l comply with the i,te s listed on the back. Permit Fee: ?Jy_ Issued By: Trunk Charge: el C; Date Issued: Assessment Fee: Receipt No.: Partial Inspection: Comments Final Inspection Approved: % �-?l C�— Date Initial Rejected: Reason ** PERMIT MUST BE POSTED ON JOB SITE ** White Copy - File Green Copy - Inspector /— Date 4 Date Initial Date Initial Buff Copy - Applicant !I 9 The trCi of Edmonds Side Sewer Drawing tY EASEMENT NO - -------------------------------------------- NEW CONSTRUCTION g REPAIRS ❑ LID NO - ------------------ ASMT. NO............. ------ OWNER .. t�rAlJeO-------Vb WI-----------wC----•--- CONTRACTOR------S YM� QQ ------•---••----••--------------•-------------------•----------- PERMIT NO. w� 1 JOB ADDRESS -�`-1--.......a. D---------- V-4e'. 5� ...-... LEGAL DESCRIPTION: LOT NO. -------` BLOCK NO. NAMEOF ADDITION.......................................................... ............................................................ EDIVONDS I � TREATMENT .PLAN, [7` sTbikM e.ka DATE.-`--`--o--�----o-g--------------- BYL�----- --� 2 i C ATC,H II ti5 111: 3 S xr*-1i30(oa TACNCW LaNc7H z � � w i ♦ 3 > --rPk%zNCH coven •.�v i,��. .Q 'T1 G LJ ► Ic L CV [L T-C C N C.N �} IERF .1P• Ckp iEE wf 4"LOKG LEGS SYSTEM CROSS-SECTION MIR.A.FI 500X OK InQuIVELE T TO B L�`, E D O N� TRENCH COVER WASAED GPAVEI 4 C)IAM PSERF P TRENCH CROSS-SECTION 0 RI-r,EIV D JUN N6 1987 PERMIT COUNTER STANDARD DRA1.-::-GE PLAN INFILTRATION'' S'!STEM PAGE I (/1Or 1,2 for �:5Q�iL.J.Qc,& ///G 7i /fib S location ,��4—>er C--r2e—\<, plan byohe�t.�— phone datk7 DESIGN DATA Trench Perc LF per Imperm Trench Number Rate 1000 sq.ft. Area Reg ,. z '--- L. ram_ NOTES 1. Call Engineering Division (771-3202) .for prebackfill and final inspections. 2. Responsibility for operation and maintenance of drainage systems on private property is the responsibility of the property owner(s). Preventive maintenance consists of preventing soil and other materials frcn entering trench during construction as well as after construction. Catch basins should be cleaned of floatinq material and sediment at re ular intervals (at least twice per yea CITY OF EOMONOS SITE PLAN. SCALE' OTE: 00 NOT USE INFILTRATION SYSTEMM SLOP`S OVER 15 PE,=;CENT (15 SOT RISE P_F=z 100 FE=T HORIZONTAL) L.� L1cci oJT RECErIVED ,JUN N6 1987 PERMIT COUNTER STANDARD DRAINAGE PLAN INFILTRATION SYSTEM PAGE 2 OF 2 UPPER gtLSIN OETE�lTIOH PIP! ''LENGTHS �1' CONT:iDL CA-MH it �V NT�1/ I (LoD!31N7 1— 1� SIN , 2' ►A4x COVER i— OIIT� L��CT �- J i .• i CO-r' IaoL� 5LOPE-► I TO OUTLFT Z l Z `f it (N PRAP OR RUNOFF SPREADER) ._ SYSTEM CROSS SECTION ILSEEPAGE 3 FOR OUTLET CONTROL DETAIL Z' a 'L' a % � DF�P, 4- 6" SPALLS (-IL CONWL) 2'a 2' Y 3" DEcP, CRusuED ROCK r ZOm 1 CONTROL RIPRAP OUTLET WA-3NED r.P-. YEL-� OUTFLOW TRENCH, MIN 10' LONG, I TOP 4 A- PER.F PIPE TO 9E LEVFL .ti FROM �, C,=NTROL 4" PERF PIPE WITH CAPS RUNOFF SPREADER OUTLET STANDARD RAIN E PLAN DETENTION SYSTEM PAGE I OF 3 for location plan by phone date DESIGN DATA System Imperm Pipe Pipe Orifice Number Area Diam Length Diameter NOTES 1. Call Engineering Division (771-3202) for prebackfill and final inspections. 2. Responsibility for operation and maintenance of drainage systems on private property is the resDonsibility of the property owner(s). Material accumulated in the storage pipe must be flushed out and removed from catch basins to allow proper operation. The outlet control orifice must be kept open at all time . -s CITY OF EDMONOS D D. 5 . OI 2700 c, L l CCi �A ,O JT I SOS SITE PLAN. SCALE: OTE: DO NOT USE INFILTRATION SYSTEM SLOPE'S OVER 15 PE,:;CENT (15 )O T RISE PEP 100 FEET HORIZONTAL RECEIVE® JUN ti6 1987 PERMIT .COUNTER STANDARD DRAINAGE PLAN INFILTRATION SYSTEM PAGE 2 OF 2 tftr OF EDMONDS e LJ NEW ❑. ADDITION ❑ RETIREMENT ASSET INFORMATION SHEET ASSET NO. ��/- ADDITION TO ASSET NO. DESCRIPTION SERIAL NO. LOCATION '"� ` DEP . NO. ** PURCHASE ORDER NO. * PROJECT NUMBER��%����f PURCHASE ORDER DATE PROJECT COMPLETION DATE COST COST • B.A.R.S. ACCOUNT NO. ,�/��-eg0e)- eq r--5 , 01) .L� ESTIMATED LIFE o INITIATED BY DATE APPROVED BY **SUBMIT ASSET INFORMATION SHEET WITH FINAL PAYMENT REQUEST • 1 *SUBMIT ASSET INFORMATION SHEET UPON CLOSE OF PROJECT ACCOUNTING ONLY lid' DEPRECIATE MONTHLY DEPRECIATION AMOUNT _ ANNUAL DEPRECIATION AMOUNT G.L. ENTRY REFERENCE. DATE VERIFIED BY PROCESSED BATCH NO. b P INITIAL FINANCE . STANDARD DRAIN_" GE PLAN 2 i CATCH btiSIH: I.W-IT'3O(ok T&CNCN LcCNGI"H .rnVAI' M TnIzNCH Cov" L tY R'L TIC C N C H ,, IEYr ►1P-. CAP TEE W1 4"LOKG LEGS SYSTEM CROSS-SECTION MIRAF1 ooX oRulveLT TO B LAYE D oN w o U 'f RE NCH COVER ---� GRAVEL tr OtA?v! P=RF PIPE 0. TRENCH CROSS-SECTION RECEIVED J UN N 6 1987 PERMIT COUNTER INFILTRATION' SYSTEM PAGE I Or 2 for ::-)Ca L.J. p 0 a-4 y rAe. 5 JI A�-- location �Q_e.r C.ree k. t~ o-r plan by Jk,>h ey-t"�— phone :Z 7 -(4q - date 10-25- fr7 NOTES 1. Call Engineering Division (77!-3202) .for prebackfill and final inspections. 2. Responsibility for operation and maintenance of drainage systems on private property is the responsibility of the property owr.er(s). Preventive maintenance consists of preventing ' soil and other materials from entering trench during construction as well as after construction. Catch basins should be cleaned of floating material and sediment at regular intervals (at least twice per year). 7 G 87 CITY OF EOMONOS O D.S. SITE PLAN, SCALE: 0 T E: 00 NOT USE INFILTRATION SYSTEM v SLOPES OVER 15 PERCENT (15 )OT RISE Pc-R 100 FEET HORIZONTAL ) Ll2ciOJT /D S D.S . . RECEIVED J UN j 1.78 / PERMIT COUNTER STANDARD DRAINAGE PLAN INFILTRATION SYSTEM PAGE 2 OF 2 I L40 10 E6 too ZN to LOT (5� .47)g7 .. tt. . .. WA (0w. r1 li o Le- C: F IV ED JUN .26 1987, PERMIT COUNTER ff LT Alt tt -ALA _L -I:. -Z7 - M400,iflg in this pernlit approval futerpf"ed as all '.k si,. - 4y ' % or permmit,.. '-I main - -- te'Wrice of any .1c -Mm* lng or m1pemdW bui: -hirc ap which i strix souW&- th,: ."�upe of tjj;, Plication, regardl pilding.sWuCnireorco ess of whe'jfW' such condition is shown 10, g. Such Wldn �.norftwm an the A.ridifinn 11guy be the s*ject of a 456 ou wture or einent actio,,.. sqxratc Zone Corner...Flag -SetbaL Front C,- 2-0 Side,, /V/,� Rear Other tuale. IV APPROWD 8y PL ilv(3 R ,1i f ()VAERICONTRACTOR IS RESPONSIBLE FO r\ EROSION CONTROL AND DRAINAGE---��tAof-�tA -2_ D APPROVED AS NOTED W—m-1 -='ING JUN - 3 2011 DEVELOPMENT SERVICES CTR- CITY OF EDMONDS srREEr . FILE NELSON GEOTECH N ICAL N G A ASSOCIATES9 INC. GEOTECHNICAL ENGINEERS & GEOLOGISTS Main Office 17311 — 135`h Avenue NE, A-500 Woodinville, WA 98072 (425) 486-1669 FAX (425) 481-2510 (425) 337-1669 Snohomish County r May 18, 2011 Ms. Mary Wilson 13318 — 3 1 " Avenue NE Seattle, Washington 98125 Critical Area Letter Wilson Property 1116 — 2"d Avenue South Edmonds, Washington NGA File No. 842611 Dear Ms. Wilson: Engineering -Geology Branch 437 East Penny Road Wenatchee, WA 98801 (509) 665-7696 FAX (509) 665-7692 tyof Edm "1rLAN 4TIVaoVE This letter presents our observations and opinions of the existing retaining wall that was constructed on a steep slope above a creek at your property at the above referenced address, as shown on the Vicinity Map in Figure 1. Introduction It is our understanding that a block retaining wall was constructed about three years ago on a steep slope to repair a previously failing wall on your property. We were informed that geogrid was used in between lifts of backfill, and that drain rock was used behind the wall. The City of Edmonds has requested that we address the construction of the wall, as it was built on a steep slope within a landslide and erosion hazard area near a creek. We have been in contact with Kernen Lien with the City of Edmonds and he has indicated that he was specifically requesting that we address the City of Edmonds Code 23.80.070.A2. Surface Conditions A series of tiered block retaining walls are located behind the residence, creating a level backyard area, as well as a pathway down to a level area next to a creek. Based on our understanding of the site and our observations, it appears that an older retaining wall was removed a E STREET FIB JUN OPM - 3 2011 DEi/ELOPNciV i SERVICES CTR. CITY OF EDMONDS Critical Areas Letter Wilson Property 1116 — 2"d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 2 block wall was constructed in its place. Some areas of the older wall remain, with new keystone blocks added in front of the old wall. The pathway runs north -south, before it turns to the west- southwest to a level flat area. A steep slope vegetated with trees and brush is located to the north end of the wall, and steep slopes are located to the south of the wall, near the creek. The site layout is shown on the'Site Plan in Figure 2. The walls vary in height from about one foot to six feet, as shown on the Cross-section A -A' on Figure 3. It appears that a drain pipe was installed behind the upper wall. The drain pipe is covered with washed rock and filter fabric. We also observed a clean out drain behind the upper wall. We did not observe ponding or seeping water on the site at the time of our visit on Monday, May 2, 2011. Subsurface Conditions The geologic units for this area are shown on the Geologic Map of the Edmonds East and Part of the Edmonds West Quadrangle, Washington, by James P. Minard (USGS, 1983). The site is mapped as Transitional Beds (Tb), and is directly adjacent to the Whidbey Formation (Qw). The Transitional Beds are described as clay, silt, and very fine sand, and the Whidbey formation is described as medium to coarse fine-grained sand. The soil exposed in the excavations consisted of sand with silt. Explorations: The subsurface conditions within the site were explored on May 2, 2011 by advancing four hand augers to depths ranging from approximately 4.0 to 6.0 feet below the existing ground surface. The approximate locations of our explorations are shown on the Site Plan in Figure 2. A geologist from NGA was present during the explorations, examined the soils and geologic conditions encountered, obtained samples of the different soil types, and maintained logs of the hand augers. The soils were visually classified in general accordance with the Unified Soil Classification System, presented in Figure 4. The logs of our hand augers are attached to this report and are presented as Figure 5. We present a brief summary of the subsurface conditions in the following paragraphs. For a detailed description of the subsurface conditions, the hand auger logs should be reviewed. NELSON GEOTECHNICAL ASSOCIATES, INC. ., Critical Areas Letter Wilson Property 1116 — 2nd Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 3 Hand Augers 1 and 2 were excavated above the upper retaining wall. Below approximately 0.5 J feet of topsoil, we encountered medium dense, brown, silty fine to medium sand with gravel. We interpreted this material to be undocumented fill. Below the fill, we encountered dense, brown - gray, fine to medium sand with gravel. We interpreted this material to be native soil. Hand Augers 1 and 2 were terminated in the sand with silt at approximately depths of 5.0 and 6.0 feet below the existing ground surface, respectively. Hand Augers 3 and 4 were excavated on the slope below the wall. Below approximately 0.5 to 1.0 feet of topsoil, we encountered medium dense, brown -gray, fine to medium sand with gravel. We interpreted this material to be native soil. Hand Augers 3 and 4 were terminated in the sand with silt at approximate depths of 4.5 and 4.0 feet below the existing ground surface, respectively. CONCLUSIONS AND RECOMMENDATIONS General Based on our observations in the field, and our understanding of the construction of the wall, it is our opinion that the retaining wall is relatively stable and should not adversely impact the other sloping areas of the property or other critical areas within the site. We have also reviewed the City of Edmonds Code 23.80.070 A2 and concluded that the recent wall construction did not conflict with the provision found in the Code. Our explorations indicated that stable sand with silt generally underlies the site and forms the core of the site slope, and the wall as constructed should not decrease the slope stability on this property or adjacent properties. The slopes appear to be stable with respect to large-scale, deep-seated earth movements, due to its inherent strength and slope geometry. There is a potential for shallow sloughing and erosion events on the steep portions of the slopes on the property, but we did not observed any signs of past slope movement. Since .the wall was installed. It is also our opinion that the retaining walls should not increase surface water discharge to adjacent properties. We do not recommend any further excavations on or adjacent to the walls and the slopes. Future vegetation management on the slope should be the subject of a specific evaluation and a plan approved by the City of Edmonds. The slopes should be monitored on an on -going basis, especially during the wet season, for any signs of instability, and corrective actions promptly NELSON GEOTECHNICAL ASSOCIATES, INC. Critical Areas Letter Wilson Property 1116 — 2"d. Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 4 taken should any signs of instability be observed. Lawn clipping and any other household trash or debris should never be allowed to reach the slopes. Under no circumstances, should water be allowed to flow over or concentrate on the site slopes or retaining walls. Protection of the retaining walls, steep slopes, and the backyard setback areas should be performed as required by the City of Edmonds. Specifically, we recommend that the backyard area, retaining walls, and slopes not be disturbed or modified through placement of any fill or removal of the existing vegetation. No additional material of any kind should be placed on the slope or walls, such as excavation spoils, lawn clippings, and other yard waste, trash, and soil stockpiles. Trees should not be cut down or removed from the slopes unless a mitigation plan is developed, such as the replacement of vegetation for erosion protection. Vegetation should not be removed from around the walls or on the slopes. Replacement of vegetation should be performed in accordance with the City of Edmonds code. Any proposed development within the backyard area should be the subject of a specific geotechnical evaluation. Under no circumstances should water be allowed to concentrate on the slopes. USE OF THIS LETTER This letter was prepared for Ms. Mary Wilson and her agents for in evaluating the existing block retaining wall on this site only. Our letter, conclusions, and interpretations should not be construed as a warranty of subsurface conditions. All people who own or occupy homes on hillsides should realize that landslide movements are always a possibility. The landowner should per inspect the slope, especially after a winter storm. If distress is evident, a geotechnical engineer should be contacted for advice on remedial/preventative measures. The probability that landsliding will occur is substantially reduced by the proper maintenance of drainage control measures at the site (the runoff from the roofs and other surfaces should be led to an approved discharge point). Therefore, the homeowner should take responsibility for performing such maintenance. Consequently, we recommend that a copy of our report be provided to any future homeowners of the property if the home is sold. NELSON GEOTECHNICAL ASSOCIATES, INC. Critical Areas Letter Wilson Property 1116 — 2"d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 5 Within the limitations of scope, schedule and budget, our services have been performed in accordance with generally accepted geotechnical engineering practices in effect in this area at the time this letter was prepared. No other warranty, expressed or implied, is made. Our observations, findings, and opinions are a means to identify and reduce the inherent risks to the owner. ••• NELSON GEOTECHNICAL ASSOCIATES, INC. Critical Areas Letter Wilson Property 1116 — 2°d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 6 It has been a pleasure to provide service to you on this project. If you have any questions or require further information, please call.. Sincerely, NELSON GEOTECHNICAL ASSOCIATES, INC. 1 Bala Dodoye-Alali Project Geologist r�'qm-s . OV. WAS 5� —35215 "4 '19_ 0NAL EXPIRES -` 1 - 7 4 Khaled Shawish, PE Principal BD:KMS:kmn Two Copies Submitted Five Figures Attached NELSON GEOTECHNICAL ASSOCIATES, INC. 2 n L2 ror s U 4R � VICINITY MAP Not to Scale Pine Makah Bella GwIa R Ir _ , . - -- — -DOWN-Ti -N.� �— u— F?Qf�� OF Hotly Dr Cedar St D Q.NDS Hemlock WaY I lemlac9c SI � t Erben D;r Laurel St Seamant Ln Project Sitel iW 'I Forsyth L-n �I p Fir St Fir P. �- �-- CD LElm St 1� !querr'A_: Edmonds, WA 011 MapQuest Portions02011 GSi ■ Project Number NELSON GEOTECHNICAL No. Date Revision By CK r ASSOCIATES, INC. b 842611 Wilson Property N V A 1 5112/11 Original DPN BD Vicinity Map GEOTECHNICAL ENGINEERS & GEOLOGISTS Figure 1 17311-135th Ave. NE, A-600 Snohomish County (425) 339-1669 WoodinWW WA 98072 Wenetohee/C W.n (509) 665.7698 Q (125) 486-1669 /Far 481-2510 .nslearpeotech.00m . 4*,4 \, � � sue• a - ` HA-3 s .r� h ,w, r €: M " OftKs :� `02afoV VL14 Lc U yyx `'Imagery, Date: 6111r2010- a 47-488'Oa.82" N -1• 2"22'55.14 VV cic 79 ft r , Eye alt "291 It' �0 � Existing Residence m East I I West 40 T � 40 Block Walls R n o Cn o m :3 30 HA-1 Trail 30 o o =3 Filh rt m QvR -� HA-3 o < a 20 QvT: Fill 20 >o o Z w (D 42° Wig m E Creek rn TD> z > � X o �gm z n"1p HA-4 10 m Q NN o z u, A 0� N am m to m =w 0 0 n o 0 �Z -' N 0 0 10 20 30 40 50 60 70 -� y N r Exploration Distance (feet) Hand Auger Designations HA-1 N d m o � < Groundwater Level --> 1 NOTES: w During Exploration 1) Stratigraphic conditions are interpolated between Geologic Contact --> (approximate) 2) the explorations. Actual conditions may vary. Elevations are approximate. Z W Reference: Cross Section is based on field measurements using a hand-held clinometer and 100-ft tape measure. o 0 UNIFIED SOIL CLASSIFICATION SYSTEM GROUP MAJOR DIVISIONS GROUP NAME SYMBOL CLEAN GW WELL -GRADED, FINE TO COARSE GRAVEL COARSE- GRAVEL GRAVEL GP POORLY -GRADED GRAVEL GRAINED MORE THAN 50 % GRAVEL GM SILTY GRAVEL OF COARSE FRACTION RETAINED ON SOILS NO.4 SIEVE WITH FINES GC CLAYEY GRAVEL SAND _CLEAN SW WELL -GRADED SAND, FINE TO COARSE SAND SAND SP POORLY GRADED SAND MORE THAN 50 % RETAINED ON MORE THAN 50 % NO. 200 SIEVE OF COARSE FRACTION SAND SM SILTY SAND PASSES NO. 4 SIEVE SC WITH FINES CLAYEY SAND FINE - SILT AND CLAY MIL SILT INORGANIC GRAINED LIQUID LIMIT CL CLAY LESS THAN 50 % SOILS ORGANIC OL ORGANIC SILT, ORGANIC CLAY SILT AND CLAY MH SILT OF HIGH PLASTICITY, ELASTIC SILT INORGANIC MORE THAN 50 % PASSES LIQUID LIMIT CH CLAY OF HIGH PLASTICITY, FLAT CLAY NO. 200 SIEVE 50 % OR MORE ORGANIC OH ORGANIC CLAY, ORGANIC SILT HIGHLY ORGANIC SOILS PT PEAT NOTES: 1) Field classification is based on visual SOIL MOISTURE MODIFIERS: examination of soil in general accordance with ASTM D 2488-93. Dry - Absence of moisture, dusty, dry to the touch 2) Soil classification using laboratory tests is based on ASTM D 2488-93. Moist -Damp, but no visible water. 3) Descriptions of soil density or Wet - Visible free water or saturated, consistency are based on usually soil is obtained from interpretation of blowcount data, below water table visual appearance of soils, and/or test data. Project Number ELSON GEOTECHNICAL NO. Date Revision By CK 842611 Wilson Property Soil Classification Chart ASSOCIATES, INC. �NGA GEOTECHNICAL ENGINEERS & GEOLOGISTS 1 5/12/11 Original DPN BD Figure 4 17311-135M A.. NE, A{°C Snohomish County (425) 337-1669 Woodimn6e, WA 96072 Wenetchee/Chebn (509) 6657696 (425) 486-16W I Fax 461-251 ° xvw.n=ng-tech.wm LOG OF EXPLORATION DEPTH (FEET) HAND AUGER ONE 0.0 - 0.5 0.5 - 4.0 4.0 - 5.0 HAND AUGER TWO 0.0 - 0.5 0.5 - 5.0 5.0 - 6.0 HAND AUGER THREE 0.0 - 0.5 0.5 - 4.5 HAND AUGER FOUR 0.0 - 1.0 1.0 - 4.0 LSB:DPN USC SOIL DESCRIPTION TOPSOIL BROWN, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE, MOIST) F( ILL) SP-SM BROWN -GRAY, FINE TO MEDIUM SAND WITH SILT AND GRAVEL (DENSE, MOIST) SAMPLES WERE COLLECTED AT 2.0 AND 4.0 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 5.0 FEET ON 5/2/11 TOPSOIL BROWN, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE, MOIST) F( ILL) SP-SM BROWN -GRAY, FINE TO MEDIUM SAND WITH SILT AND GRAVEL (DENSE, MOIST) SAMPLES WERE NOT COLLECTED GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 6.0 FEET ON 5/2/11 TOPSOIL SM BROWN -GRAY, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE, MOIST TO WET) SAMPLES WERE NOT COLLECTED GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 4.5 FEET ON 5/2/11 TOPSOIL SM BROWN -GRAY, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE TO DENSE, MOIST) SAMPLE WAS COLLECTED AT 3.0 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 4.0 FEET ON 5/2/11 NELSON GEOTECHNICAL ASSOCIATES, INC. FILE NO: 842611 FIGURE 5 Ea m-oulds Ball iding Department AN APPROVED AS NOTED ,RY ENGINEERING yy�jA�t U�- f e.A_ Vul I,HOL �-"vowllt;JLE FOR AGE Nothing in thist approval Poem shall be 1werPMUd as - Owing or pernift* tbe maintmianoe of any curren.tl)'exisfing fflegal, -nonconfornung Or unpernutted building, structure condition is outside the she of the '=2 D permit application, regardless of whether such RECE&Eja boil or condition is shown on the wM9. Such building; structure or J UN 3 2011 may be the subject of a separate enforcement action.,, DEVVELOPiwai -, SERIACES CTH- CITY OF EDA40NDS ewix Main Office 17311 — 135'h Avenue NE, A-500 Woodinville, WA 98072 (425) 486-1669 FAX (425) 481-2510 (425) 337-1669 Snohomish County May 18, 2011 Ms. Mary Wilson 13318 — 3 1 " Avenue NE Seattle, Washington 98125 Critical Areas Letter Wilson Property 1116 — 2"d Avenue South Edmonds, Washington NGA File No. 842611 Dear Ms. Wilson: NELSON GEOTECH N ICAL ASSOCIATES, INC. GEOTECHNICAL ENGINEERS & GEOLOGISTS Engineering -Geology Branch 437 East Penny Road Wenatchee, WA 98601 (509) 665-7696 FAX (509) 665-7692 This letter presents our observations and opinions of the existing retaining wall that was constructed on a steep slope above a creek at your property at the above referenced address, as shown on the Vicinity Map in Figure 1 Introduction It is our understanding that a block retaining wall was constructed about three years ago on a steep slope to repair a previously failing wall on your property. We were informed that geogrid was used in between lifts of backfill, and that drain rock was used behind the wall. The City of Edmonds has requested that we address the construction of the wall, as it was built on a steep slope within a landslide and erosion hazard area near a creek. We have been in contact with Kernen Lien with the City of Edmonds and he has indicated that he was specifically requesting that we address the City of Edmonds Code 23.80.070.A2. Surface Conditions A series of tiered block retaining walls are located behind the residence, creating a level backyard area, as well as a pathway down to a level area next to a creek. Based on our understanding of the site and our observations, it appears that an older retaining wall was removed and a keystone Critical Areas Letter Wilson Property 1116 — 2°d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 2 block wall was constructed in its place. Some areas of the older wall remain, with new keystone blocks added in front of the old wall. The pathway runs north -south, before it turns to the west- southwest to a level flat area. A steep slope vegetated with trees and brush is located to the north end of the wall, and steep slopes are located to the south of the wall, near the creek. The site layout is shown on the Site Plan in Figure 2. The walls vary in height from about one foot to six feet, as shown on the Cross-section A -A' on Figure 3. It appears that a drain pipe was installed behind the upper wall. The drain pipe is covered with washed rock and filter fabric. We also observed a clean out drain behind the upper wall. We did not observe ponding or seeping water on the site at the time of our visit on Monday, May 2, 2011. Subsurface Conditions The geologic units for this area are shown on the Geologicp of the Edmonds East and Part of the Edmonds West Quadrangle, Washington, by James P. Minard (USGS, 1983). The site is mapped as Transitional Beds (Tb), and is directly adjacent to the Whidbey Formation (Qw). The Transitional Beds are described as clay, silt, and very fine sand, and the Whidbey formation is described as medium to coarse fine-grained sand. The soil exposed in the excavations consisted of sand with silt. Explorations: The subsurface conditions within the site were explored on May 2, 2011 by advancing four hand augers to depths ranging from approximately 4.0 to 6.0 feet below the existing ground surface. The approximate locations of our explorations are shown on the Site Plan in Figure 2. A geologist from NGA was present during the explorations, examined the soils and geologic conditions encountered, obtained samples of the different soil types, and maintained logs of the hand augers. The soils were visually classified in general accordance with the Unified Soil Classification System, presented in Figure 4. The logs of our hand augers are attached to this report and are presented as Figure 5. We present a brief summary of the subsurface conditions in the following paragraphs. For a detailed description of the subsurface conditions, the hand auger logs should be reviewed. NELSON GEOTECHNICAL ASSOCIATES, INC. Critical Areas Letter Wilson Property 1116 — 2"d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 3 Hand Augers 1 and 2 were excavated above the upper retaining wall. Below approximately 0.5 feet of topsoil, we encountered medium dense, brown, silty fine to medium sand with gravel. We interpreted this material to be undocumented fill. Below the fill, we encountered dense, brown - gray, fine to medium sand with gravel. We interpreted this material to be native soil. Hand Augers 1 and 2 were terminated in the sand with silt at approximately depths of 5.0 and 6.0 feet below the existing ground surface, respectively. Hand Augers .3 and 4 were excavated on the slope below the wall. Below approximately 0.5 to 1.0 feet of topsoil, we encountered medium dense, brown -gray, fine to medium sand with gravel. We interpreted this material to be native soil. Hand Augers 3 and 4 were terminated in the sand with silt at approximate depths of 4.5 and 4.0 feet below the existing ground surface, respectively. CONCLUSIONS AND RECOMMENDATIONS r General Based on our observations in the field, and our understanding of the construction of the wall, it is our opinion that the retaining wall is relatively stable and should not adversely impact the other sloping areas of the property or other critical areas within the site. We have also reviewed the City of Edmonds Code 23.80.070 A2 and concluded that the recent wall construction did not conflict w th the provision found in the Code. Our explorations indicated that stable sand with silt generally underlies the site and forms the core of the site slope, and the wall as constructed should not decrease.the slope stability on this property or adjacent properties. The slopes appear to be stable with respect to large-scale, deep-seated earth movements, due to its inherent strength and slope geometry. There is a potential for shallow sloughing and erosion events on the steep portions of the slopes on the property, but we did not observed any signs of past slope movement. Since the wall was installed. It is also our opinion that the retaining walls should not increase surface water discharge to adjacent properties. We do not recommend any further excavations on or adjacent to the walls and the slopes. Future vegetation management on the slope should be the subject of a specific evaluation and a plan approved by the City of Edmonds., The slopes should be monitored on an on -going basis, especially during the wet season, for any signs of instability, and corrective actions promptly NELSON GEOTECHNICAL ASSOCIATES, INC. Critical Areas Letter Wilson Property 1116 — 2"d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 4 taken should any signs of instability be observed. Lawn clipping and any other household trash or debris should never be allowed to reach the slopes. Under no circumstances, should water be allowed to flow over or concentrate on the site slopes or retaining walls. Protection of the retaining walls, steep slopes, and the backyard setback areas should be performed as required by the City of Edmonds. Specifically, we recommend that the backyard area, retaining walls, and slopes not be disturbed or modified through placement of any fill or removal of the existing vegetation. No additional material of any kind should be placed on the slope or walls, such as excavation spoils, lawn clippings, and other yard waste, trash, and soil stockpiles. Trees should not be cut down or removed from the slopes unless a mitigation plan is developed, such as the replacement of vegetation for erosion protection. Vegetation should not be removed from around the walls or on the slopes. Replacement of vegetation should be performed in accordance with the City of Edmonds code. Any proposed development within the backyard area should be the subject of a specific geotechnical evaluation. Under no circumstances should water be allowed to concentrate on the slopes. USE OF THIS LETTER This letter was prepared for Ms. Mary Wilson and her agents for in evaluating the existing block retaining wall on this site only. Our letter, conclusions, and interpretations should not be construed as a warranty of subsurface conditions. All people who own or occupy homes on hillsides should realize that landslide movements are always a possibility. The landowner should periodically inspect the slope, especially after a winter storm. If distress' is evident, a geotechnical engineer should be contacted for advice on remedial/preventative measures. The probability that landsliding will occur is substantially reduced by the proper maintenance of drainage control measures at the site (the runoff from the roofs and other surfaces should be led to an approved discharge point). Therefore, the homeowner should take responsibility for performing such maintenance. Consequently, we recommend that a copy of our report be provided to any future homeowners of the property if the home is sold. NELSON GEOTECHNICAL ASSOCIATES, INC. Critical Areas Letter Wilson Property 1116 = 2"d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 5 Within the limitations of scope, schedule_ and budget, our services have been performed in accordance with generally accepted geotechnical engineering practices in effect in this area at the time this letter was prepared. No other warranty, expressed or implied, is made. Our observations, findings, and opinions are a means to identify and reduce the inherent risks to the owner. Memo NELSON GEOTECHNICAL ASSOCIATES, INC. Critical Areas Letter Wilson Property 1116 — 2°d Avenue South Edmonds, Washington NGA File No. 842611 May 18, 2011 Page 6 It has been a pleasure to provide service to you on this project. If you have any questions or require further information, please call. Sincerely, NELSON GEOTECHNICAL ASSOCIATES, INC. Bala Dodoye-Alali Project Geologist F WAAS 3/ fOPIAL� Khaled Shawish, PE Principal BD:KMS:kmn Two Copies Submitted i Five Figures Attached NELSON GEOTECHNICAL ASSOCIATES, INC. VICINITY MAP Not to Scale 2 orm � L lum. - _� _i I_---.= _ _._! 1 I I— r—ru — SU DO�v�irA �f?OR?TOF Holly.Dr EcedarSt QND un° Marsh Spruce Hemlock Way LHemlocka poi n t �c Faimortds i _. . d'w�►rQ, GSt�r Park Erhen Dr pry r`p -- Seamont Ln =r Laurel St Project 216th S °$vr Pin St Plne St� t!1 S ite Makah hA W '1 �Q, S �; i Forsyth Ln ' .4En Fir Si $ Qy� D Pir PJ — I' U, Bella Goola Ftd ' '.. LEIrn St �1 eft C=7,- I �, ti�� 4 'VVj Si Nrch z �r== St Svr @2011 MapQuest Edmonds, WA ;�% t011 NAVTEQr Project. Number NELSON GEOTECHNICAL No. Date Revision By CK r ASSOCIATES, INC. N 842611 Wilson Property NGA 1 5112/11 Original DPN eD Vicinity Map GEOTECHNICAL ENGINEERS & GEOLOGISTS Figure 1 17311-135th Ave. NE. AZW Snohonueh County (425) 339-1669 Woodim *WA 98072 Wenatch-/CMW(509)6657696 Q (425) 486-16691 Fm 481-2510 viww.neleonpsoteM.com C7 7 n� "vf . n Ao 1I1it •+»♦. ;10,•+ s04 Nt •; �" � ,.,, � .. . .., a �, �. f1 ``.,, ' � ' , w _ ^ . � ,� � � ( � M -P' , a Qj .�h� _ �.r� ^� t ��". + . w a , iM�. ��r �y � 1 • •� �i "7+"4 • �q,m. �`�fw � R �� .n qj ,, 404 t ♦ ' ., n01.1 Goggle —� 53 It f , .Mos Llmagcry�Datc: 6111ZOi0`+':,,1i 47°4S'O�.S2" N'i2� 22'S5 i' �r clev�741t cyc alt ?0.1 It -n A A, C Existing Residence u' 3 East m I 1 West 40 T —T 40 n Block WallsCn R Cn rn Cl)HA-1 Trail 0 -V 30 30 a o Fill D °� QvR �. Fill. D 42) o -- HA-3 20 QvT Fill` 20 w Z 42` Creek rin a o Z Q 10 HA-4 10 m Dr Q tn p = - - O Z am 0 umi m 0 0 0 10 20 30 40 50 60 70 a r Distance (feet) Exploration o Hand Auger Designations HA-1 i o Groundwater Level � 1 NOTES: o d< _ � w' During Exploration 1) Stratigraphic conditions are interpolated between Geologic Contact ---> (approximate) 2) the explorations. Actual conditions may vary. Elevations are approximate. Z W Reference: Cross Section is based on field measurements using a hand-held clinometer and 100-ft tape measure. 0 7 2011\842611 Wilson\CS.dwg - UNIFIED SOIL CLASSIFICATION SYSTEM GROUP MAJOR DIVISIONS GROUP NAME SYMBOL CLEAN GW WELL -GRADED, FINE TO COARSE GRAVEL COARSE- GRAVEL GRAVEL GP POORLY -GRADED GRAVEL GRAINED MORE THAN 50 % GRAVEL GM SILTY GRAVEL OF COARSE FRACTION RETAINED ON SOILS NO.4 SIEVE WITH FINES GC CLAYEY GRAVEL SAND CLEAN SW WELL -GRADED SAND, FINE TO COARSE SAND SAND SP POORLY GRADED SAND MORE THAN 50 % RETAINED ON MORE THAN 50 % NO. 200 SIEVE OF COARSE FRACTION SAND SM SILTY SAND PASSES NO. 4 SIEVE SC WITH FINES CLAYEY SAND FINE - SILT AND CLAY ML SILT INORGANIC GRAINED LIQUID LIMIT CL CLAY LESS THAN 50 % SOILS ORGANIC OL ORGANIC SILT, ORGANIC CLAY SILT AND CLAY MH SILT OF HIGH PLASTICITY, ELASTIC SILT INORGANIC MORE THAN 50 % PASSES LIQUID LIMIT CH CLAY OF HIGH PLASTICITY, FLAT CLAY NO. 200 SIEVE 50 % OR MORE ORGANIC OH ORGANIC CLAY, ORGANIC SILT HIGHLY ORGANIC SOILS PT PEAT NOTES: 1) Field classification is based on visual SOIL MOISTURE MODIFIERS: examination of soil in general accordance with ASTM D 2488-93. Dry - Absence of moisture, dusty, dry to the touch 2) Soil classification using laboratory tests is based on ASTM D 2488-93. Moist - Damp, but no visible water. 3) Descriptions of soil density or Wet - Visible free water or saturated, consistency are based on usually soil is obtained from interpretation of blowcount data, below water table visual appearance of soils, and/or test data. Project Number ELSON GEOTECHNICAL No. Date Revision By CK 842611 Wilson Property Soil Classification Chart ASSOCIATES INC. �NGA GEOTECHNICAL ENGINEERS & GEOLOGISTS 1 5/12/11 Original DPN BD Figure 4 17311-135th Aw NE, AGW Snohomish County(425) 337-1669 WooE1 Wt* WA 98072 Wenatrheel0 b.(SW)665-7696 (425) 488-16681 Fu 481-2510 .n.1.W-WCh. 0 a r L LOG OF EXPLORATION DEPTH(FEET) USC HAND AUGER ONE 0.0 - 0.5 0.5 - 4.0 4.0 - 5.0 SP-SM HAND AUGER TWO 0.0 - 0.5 0.5 - 5.0 5.0 - 6.0 SP-SM HAND AUGER THREE 0.0 - 0.5 0.5 - 4.5 HAND AUGER FOUR 0.0 - 1.0 1.0 - 4.0 SOIL DESCRIPTION TOPSOIL BROWN, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE, MOIST) F( ILL) BROWN -GRAY, FINE TO MEDIUM SAND WITH SILT AND GRAVEL (DENSE, MOIST) SAMPLES WERE COLLECTED AT 2.0 AND 4.0 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 5.0 FEET ON 5/2/11 TOPSOIL BROWN, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE, MOIST) F( ILL) BROWN -GRAY, FINE TO MEDIUM SAND WITH SILT AND GRAVEL (DENSE, MOIST) SAMPLES WERE NOT COLLECTED GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 6.0 FEET ON 5/2/11 TOPSOIL SM BROWN -GRAY, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE, MOIST TO WET) SAMPLES WERE NOT COLLECTED GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 4.5 FEET ON 5/2/11 TOPSOIL SM. BROWN -GRAY, SILTY FINE TO MEDIUM SAND WITH GRAVEL (MEDIUM DENSE TO DENSE, MOIST) SAMPLE WAS COLLECTED AT 3.0 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 4.0 FEET ON 5/2/11 LSB:DPN NELSON GEOTECHNICAL ASSOCIATES, INC. FILE NO: 842611 FIGURE 5 1 CITY OF EDMONDS CONSTRUCTION PERMIT APPLICATION NAME (OR NAME OF BUS K S) =2llS.x� o a -V\ Z MAILING ADDRESS o �•0•�a� MISS CITYTELEPHONENUMBER (9 NAM 77 S O (1 w ADDRESS = l a (o 0 1 2.3 U a CITY TELEPHONE NUMBER 22 NAME' (� _ S o D At Q ADDRESS Q CITY TELEPHONE NUMBER O O STATE LICENSE NUMBER S e-CA_--J lb K l 5 L� Legal Description of Property - Include all easements Z (show below or attach four copies) Q O . a W NEW RESIDENTIAL PLUMBING ADDIALTER "�' COMMERCIAL MECHANICAL REPAIR RETAINING WALL SIGN ORCFILLTE FENCE D-X_FT) DEMOLISH PRE -MOVE INSPJ SWIM REMODEL COMPLIANCE INSP. POOL WOO INSERT APT. BLDG RENEWAL > NUMBER OF STORIES NUMBER OF i DWELLING [UNITS ' NATURE OF WORK TO BE DONE (ATTACH PLOTPLAN) s (k5�Q_ -�c�� try ►--es USE ZONE JOB ADDRESS LEGAL DESCRIPTION CHECK ; 49r 2 PERMIT NUMBER z IIVISION NO. LID NO. _g'7 Ics'.46-143 PUBLIC RIGHT OF WAY PER OFFICIAL STREET MAP. EXISTING REQUIRED DEDICATION PROPOSED �_ RIGHT OF WAY CONSTRUCTION PERMIT REQUIRED O STREET USE PERMIT REQUIRED ❑ SEE ENGINEERING MEMO DATED METER SIZE I BUILDING SUPPLY SIZE (FIXTURE UNITS REMARKS SIGN AREA ENV. REVIEW ADB NO. ALLOWED PROPOSED EXEMPT �tCj1O11MPLETE SHORELINE q "" VARIANCE OR CU PLANNING REVIEW BY OAT YARDSt FRONTS2 Sr SIDE • O REA HEIGHT, � LOT COVERAG 7?", G ©G TOP CF 9TFa-5W V3A+-tV-- 'HECKED BY TYPE OF CONSTRUCTION CODE HEIGHT %I/ `%, 26- / SPECIAL INSPECTOR AREA OCCUPANCY OCCUPANT REQUIRED GROUP LOAD O YES O NO REMARKS g6&vz, Tmz_ PC2 l ��6 hf}-f-/�,�r 6 Pi�� Sl .�1i/sr��4lZa✓S Pei- lrl(3G r VALUATION PLAN CHECK FEE BUILDING PLUMBING 11 l Per '{j u � r MECHANICAL Ep C§1 T This Permit covers work to be done on private property ONLY. Any construction on the public domain (curbs, sidewalks, GRADING/FILL STATE SURCHARGE driveways, marquees, etc.) will require separate permission. Permit Application: 180 Days Permit Limit: 1 Year- Provided Work is Started Within 180 Days ENERGY CODE "Applicant, on behalf of his or her spouse, heirs, assigns and successors in interest, agrees to indemnify, defend and hold harmless the City of Edmonds, Washington, its officials, employees, and agents from any and all claims for damages of whatever nature, arising directly or indirectly from the issuance of this permit. Issuance of. this permit shall not be deemed to modify,,waive or reduce any requirement of any city ordinance nor limit In any way the City's ability to enforce any ordinance provision." PLAN CHECK DEPOSIT TOTAL AMOUNT DUE I hereby acknowledge that I have read this application; that the formation given Is correct; and that I am the owner, or the duly thorized agent of the owner. I agree to comply with city and e laws regulating construction', and in doing the work authoriz• ATTENTION THIS PERMIT AUTHORIZES ereby, no person will be employed in violation of the Labor ONLY THE . of 'the State of Washington relating to Workmen's Compensa- WORK NOTED INSPECTION DEPARTMENT CITY OF EDMONDS 771-3202 )ATE SIGNED Y� vvv L'TO USE OR OCCUPY A BUILDING OR STRUCTURE NSPECTION HAS BEEN MADE AND APPROVAL OR OF OCCUPANCY HAS BEEN GRANTED. UBC L APPLICATION APPROVAL This application is not a permit until signed by the Building Official or his Deputy; and fees are paid, and receipt is acknowledged in space provided. OFFICIAL'S SIGNATURE DATE RELEASED BY: DATE ORIGINAL — File YELLOW — Inspector PINK — Owner GOLD — Assessor 2 w z z z zzQ aJ Z 0 °¢•�:ax ' `' ': .. Reviewed by: (initial date) r k CaNAErTPS ''f PLANNING WTR/SWR STREET ENGNRNG �}�r �UILDVG // //ircleeJIF SE'!'BACx.S,<Ci�X7i®„- ; Plann g77777T/77 / 7777777 777T/7T/77 VARIANCE/SETBACK ADJ. CONDITIONAL USE. PERMIT ////// ///////// //////// ////////// 2 / / // /// / 7777777777 ADB REQUIREMENTS C3iDCi® ////// ///////// //////// ////////// 3 orHER Zamr. REQUIREt4FNi5 ////// ///////// //////// ////////// 4 ENVIRC'�II�11PAL FEATURES ////// ///////// //////// 5 ACCESS SLOPE & VEHICLE ACCESS ///////// ///////// //////// 6 DRAINAGE PLAN (On Site) ////// 77717777177177 ///////// ///////// //////// 7 777777 STREET FILE �- ////// ///////// ///////// //////// 8 LEGAL DESCRIPTICN VERIFICATION 4-1 0 ////// ///////// ///////// //////// 9 QUIT CLAIM/DFDICATIONS ////// ///////// ///////// //////// 10 EASEMENT - PUBLIC/PRIVATE ///////// ///////// //////// 11 CALCULATE SEWER CONNDLTIM IF NO LIDS ////// ///////// ///////// //////// 12 - 7-17T77 -71777777 PLAT/SUBDIVISION REQUIREMENTS ////// ///////// //�////// 13 � RIGii1-OF-WAY CONSTRUCTICN PERMIT REM ////// ///////// //////// ^/ 14 7777777777 BOND READ FOR PUBLIC IMPROVEMENTS ////// ///////// ///////// //////// 15 SOILS CONDITIONS & GROUND WATER FIELD Cf1DCKED ////// ///////// ///////// // // / 16 ST'REEP PAVING REQUIRE[) ////// ///////// ///////// 17 CURB AND aYMR RE)QUIR® ////// ///////// ///////// ////////// 18 SIDEWALK REQUIRED ////// ///////// ///////// 19 — // / CURB CUT FOR DRIMAY READ STREET NAME SIGN READ T17777W ///////// ///////// ////////// 21 OMER SIGNING REM ////// ///////// ///////// ////////// 22 777-77777777 SIDE SEWER AVAIIARILITY ////// ///////// ///////// //////// 23 EXISTING WATER MAIN SIZE /// // ///////// S gel� 24 WATER METER SIZE . ////// ///////// //////// ////////// 25 SERVICE LINE SIZE ' ////// ///////// //////// ////////// 26 RYDRANP REQUIRED 777777777 27 `EXISTING" 77 HYDRANT SIZE ////// ///////// 5/ //////// ////////// 28 .CROSS CONNDCTICN TNSPBCPICN 'REDO ////// TITfTTFT ///////// //////// ////////// 29 WATER METER CHARGE REQD //////.///////// ///////'////////// 30 YFIRE IME CHARGE READ = SPRINKLER ///////// ///// 11171 //L////f// 31 STREET CVr ////// ///////// %///////// 32 OPEN DncH EXISTING"' ////// ///////// ///////// 33 34 35 SIZE s; //////'///////// ///////// 36 CATCH BASIN READ ////// ///////// ///////// 37 INDICATED CN SITE PLAN ////// ///////// ///////// 38 — SHOULDER DRAINAGE MAINTAIN / SHALE OPEN RUNOFF ////// ///////// ///////// 39 777777777 140 REVIEWED BY: PLANNING MGR. ENGINEERING MGR. PUBLIC WORKS MGR. L MEMO TO: Building Division FROM: Engineering Division SUBJECT: After review of the subject building permit application, we have the following comments: 1) Connection to City water system required. 2) Connection 'to City sanitary sewer system required. 3) Right-of-way permit required for any work.on City property. 4) Driveway slope not to exceed 141*0. 5) Back water valve required if downstairs plumbing is below elevation of upstream manhole. 6) Water and sewer lines to be separated by 10 foot minimum. 7) Builder/owner responsible for containing 'all temporary runoff and erosion on site and may not impact neighboring properties in any way. 8} Construction hours from 7:00 a.m. to 10:60 p.m. on weekdays and 10:00 a.m. to 6:00 p.m. on weekends and holidays.