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HomeMy WebLinkAboutWAI2025-00092 - WAI Health Waiver - 12/18/2026 - 0 •r2,p,`;i, 415 N.6h STREET,SHELTON WA 98584 MASON. COUNTY SHELTON:360-427-9670,ext 400 BELFAIR:360-275-4467,ext.400 ' COMMUNITY SERVICES ki ya Building.Planning,Environmental Health,Community Health Iteivtea viM Application for Waiver or Appeal Amount Paid: ir 305 Receipt Number: a._-.5- 05 8 2\ Eep--4/7 wm aO�J W 0O'j Z - ®Ec 18 20 diPlease note,all approved Onsite Waivers have the salve expiration date as their OSS Pernte By 1 di Instructions: 1.. Complete Parts 1 and 2.No determination can be made until these parts are fully completed. • 2.. Fees may be billed for waivers and appeals, based on the Environmental Health Fee Schedule. 3. Submit completed application with attachments to Mason County Public Health for review PART 1. Applicant& Parcel Information Name of Applicant 3t.® JT I Telephone (S12—)5 -5 6K D Mailing Address 1)© P DX .39 I • City Lei 1t "4 etJ p State WA Zip g 5551 Parcel No. 3 a- 3 1 - 5 0 - O O O O [ Site Address 3 o 1 Skc LA Li IAJA ns55 Subdivision Name and Lot C.(1,Q,'vt1 O c s 13,e_ 1 • PART 2: Nature of Waiver/Appeal Onsite:Class A Waiver ❑ Food Sanitation Requirements ❑ Onsite:Class B Waiver I Group B Water System Regulations ❑ Onsite:Class C Waiver O Water Adequacy Requirements o Onsite: Location,WAC246-272A-0210 0 Building Permit: EH Review Policies O Onsite:Holding Tank,WAC246-272A- 0 Appeal:Enforcement Timelines 0240 0 Appeal:Departmental Determinations ❑ Onsite:Contractor Certification 0 Other Requirements Description of Waiver/Appeal(include justification,additional material may be attached.): c--k®v, 41 5-e-6c c k—f cst- heart _ A d - L)c ef q l 4v 50 c-1- Applicant Signature: / / Date: 14 l5 Revised 9/29/2025 This form may be scanned and available for public view on the Mason County Web site. Page 1 of 2 PART 3: Public Health Evaluation (Staff Use Only) 1. Type of Determination Required: Type of Onsite Waiver(if applicable) , u Appeal ❑Waiver ❑ None required ❑ Class A ❑ Class B ❑ Class C eLocal 2. Identification of Specific Code/Standard/ Determi ation (include date of determination or latest Code/Standard revision): lit/Pic- I F3'100 - /7! 0) C ) (V) 3. Nature of Appeal: Reduce the ottIV•num 4oezerhiq 1 separa teo'l 6etWeen a no1l-pubh& wafer° WO 444 file- edge of the 5ep,M 5w'!disclerfa f Comment loca fecl ah prfeel ?z?/6f Q0oo�Z f vn, MOP. to fS ff. 4. Hearing Official: ❑ Board of Health J`" Health Officer ❑ Pollution Control hearing Board 0 Public Health Director ❑ Certified Contractor Review Board 0 Environmental Health Manager 5. Mitigating Factors: -wel( epainfatM VartIVICt A//11bvrc( by W4 Dor orl 08/07/WS- -Welt Co4Sfrve fed W.IT4 0m exieridect SarAce- sea( elepih t0 3Y7 - Uf yria eolo r"C QS$esf/he,#2 - of Me ex,c1hi car�dtWI , well cors5inee{ i, drtd 1kpQG ' of- f!t up- 1124 ')�(l4Iy1r:WPldl Concluded n fherc 1 r' i o toe..e r Nmb use of ilifY we ( cii a 6nrvP 13 wa fee SocAecG" 6. I have received this waiver/appeal request. It is complete and mitigation required by the state and local policy has been submitted. Staff Signature: Date: 2/ ( z6. PART 4: Determination of the Hearing Official ti t The hearing official has determined that approval of this request will not adversely affect public health and is hereby granted. This decision is based on the following findings and conditions: O The hearing official has determined that approval of this request could potentially adversely effect public health and is hereby denied. This decision is based on the following findings and conditions: Health Official Signature: A Date: Revised 9/29/2025 This form may be scanned and available for public view on the Mason County Web site. Page 2 of 2 r 9• Q d —�1 "" QJ rY l 3 O- i CS1 �s l� cts to 3 FEBRUARY 20, 2026 i F6-92 z0z, HYDROGEOLOGIC ANALYSIS OF NEW GROUP B WELL HYDROGEOLOGIC ASSESSMENT FOR SCOTT STAN DLEY 30 NORTH SHAR LANE, LILLIWAUP, WA 98555 JEREMY J. BUSH, LG, LNG, REF'S BUSH GEOLOGICAL CONSULTING, LLC bushgeological@gmail.com ■ Bush Geological Consulting,LLC Hydrogeologic Analysis Lilliwaup,Washington February 20,2026 Table of Contents INTRODUCTION/BACKGROUND 2 PURPOSE AND SCOPE 2 REGIONAL HYDROGEOLOGIC SETTING 2 Study area 2 Topography and Location 2 Geologic Stratigraphy 2 Hydrogeologic Data 4 WELL VARIANCE AND CONSTRUCTION 4 Department of Ecology Approved Variance 4 Subject Well Construction 4 HYDROGEOLOGIC ANALYSIS 4 CONCLUSIONS 5 CLOSURE 5 Appendix A 6 Appendix B 11 Appendix C 14 I Bush Geological Consulting,LLC Hydrogeologic Analysis Lilliwaup,Washington February 20,2026 Introduction/Background A new well was constructed at 30 North Shar Lane in Lilliwaup, WA by Arcadia Well Drilling. The well location was within close proximity to an existing drainfield on the neighboring property, which was approximately 55-feet up-gradient. The well driller consulted with the Washington State Department of Ecology on a setback reduction,which was approved with alternative construction standards as mitigation for the reduction in siting of the well to a known contaminant source. The property owner, Scott Standley, is wanting to utilize this as a Group B well in order to serve his property,and the nearby property located at 180 North Shar Lane. In order to accomplish this,the County is requiring a waiver and setback reduction to the adjacent septic drainfield. Purpose and Scope Bush Geological Consulting was requested to conduct hydrogeologic review of the existing conditions,the construction of the well, and potential impacts of the close proximity of the up-gradient drainfield from the Group B well. A review of existing records for the well, any available nearby driller's well logs, and literature review was conducted to determine the potential impacts of the setback reduction on the well. Regional Hydrogeologic Setting Study area 3 ` The study area covers the subject property,the adjacent 1161' property to the north, and the general geology of the area where the subject property is located (Figure 1). E ° r. Jy. Topography and Location The subject property is located on the western side of • p, the Hood Canal approximately 1.5 miles north of Lilliwaup in Mason County, Washington (Figure 1). The subject property is 0.6 acres in size, however most of the property slopes steeply from the north to south. The property elevation ranges from the highest point on the north side of the lot of approximately 110-feet above sea level,to the lowest elevation of about 50-feet on the southernmost portion of the property. Surface geology and the topography of this area were ,`Lllwaup shaped by several periods of glaciation, landslides, and erosion. The driller's well log indicates the well was Figure 1 Site Location in Blue drilled at an elevation of approximately 100-feet above mean sea level. Geologic Stratigraphy The geologic formations exposed in the study area consist of unconsolidated Quaternary sediments.These sediments were deposited during the course of repeated cycles of glacial and interglacial processes. It is i ' Bush Geological Consulting,LLC Hydrogeologic Analysis Lilliwaup,Washington February 20,2026 generally accepted that four or more glaciations have occurred in the Puget Sound lowland during the Pleistocene.The most recent advance of the Puget glacial lob into the southern end of the Puget Sound occurred approximately 13,500 to 15,000 years ago and is called the Vashon Stade of the Fraser Glaciation. Prior to this, Cordilleran and Olympic glaciers shaped much of the region. The Washington State Department of Natural Resources (DNR) has completed a geologic map of the subject property, and shows that the t �� � -,. -- ��./ -�� - r .///,� jr1 property has two geologic units likely --` � -�_, ,---.7/-',,>('' ,===-_— _-::-/ ---;'„---:;-----.::::, / f present on the property —Qgic and Qpd ="�'`;�, ////,,;.;,,,--- !`/' _.--„,.'"'",;.,—_:_-_---3,/,'0'.j ________//$// (Figure 2). ---`\• 1 ; i �,-c-�' r,—.+� 1'x.1\//7/7 f, , n/" feI 1t c,f ,..-'f 1, Qgic — as mapped on a portion of the �\\.,,.::::-.,\\\�.`,‘,...,- /(,/,::,;_-__5_-_:.-_,,,4 •;` f f"` , i`/ %� property, and the property to the \ ',`�, �' l� ('� �_ north northwest—are Vashon Ice Contact I..,.„...,\, ` \ yj..-- --,....,.:77:ze:; �`"Q• ''i" '1'11\„' a '. .1:Deposits.The DNR indicates this material ` '•-\ 1 \ . '•`\L>> 1' \.\\ c,, �/ could be any of the following: Cobbly \ �,\`.� ' 'ii •`}1 I I, \r\ \y ' )A g , t) f� ,`�� pebble gravel, diamicton, silty sandy till tom,.� �,\\' 1 �' - i 'l) ` (between flutes on upland surface), silty ` \::;•; :i,�' pebbly gravel and pebbly sand with .f.\' �"�=J%'/ / Qpd lesser sand and silt; yellow-tan to gray; :'3:-_,„,;> �, '�l. \ Ns.w rfl,W''',41" clasts subangular to rounded; loose to n1.1 '' \Q 1 , I• ciif f( very dense; variably sorted; massive to II 41 l (1. ; ` 1, i7; -\ 1} l I It y i i 1 C(DIS well stratified; formed in the presence of ti . ;Figure 2-Geologic Mapping of the site,showing Qpd as the primary meltwater alongside, in, on, or above ice. geologic unit present. �_. __7_:. ' •L 1.,,...\ 11 1:77%7 Qpd - Pre-Fraser northern-source glacial drift —outwash and till. This is mapped on the majority of the property.This is often directly overlain by Vashon deposits.This unit typically consists of gravel,sand,till, and diamicton. Deposits of earlier glaciations and interglacial periods are most important to the hydrogeology of deeper systems. = e e A geologic cross section (Figure 3) was also ' I Qgt I�t included in the DNR geologic mapping very near Qgo O501/ the site,and can be referenced in comparison to Qga local well logs for accuracy. This vertical ___ Qpd ', °g1 interpretation is consistent with the various <-_ _,___? _ _-_ ==z glacial and interglacial events throughout the I ', --- - -,.�Qapo--?"-- moat Pleistocene. The typical geologic profile of the �' subject site includes the Qgic unit overlying the ` Qg� Hoc;�`,'�, Qpd, with the underlying Qapo — an outwash ' deposit lying underneath this till layer, and the Figure 3-Geologic Cross Section just to the South of the Subject likely aquifer source underlying the site. Property. Bush Geological Consulting,LLC Hydrogeologic Analysis Lilliwaup,Washington February 20,2026 Hydrogeologic Data A review of nearby water well logs (driller's logs) was conducted to determine typical well construction depths,and the geology encountered. Four well logs within close proximity, including the new well drilled on site,were reviewed and shown in Figure 4. The three wells located to the north all show similar geologic conditions —with confined aquifers found between 180-200 feet below land surface.Each well shows artesian pressure with static water levels being found significantly higher than the encountered water-bearing unit.This indicates that the aquifer is under confined conditions, which create a positive pressure head shown in the static water levels being above the top of the geologic unit. The well to the south (BAH895) also shows this, but is much shallower in ,AFB588 ,BAK6704 depth, likely due to elevation and proximity to a surface water source and channel. Based on review of the neighboring well logs, it appears ^ ,Boc2s there is one primary aquifer being utilized in close proximity to the subject site that is confined, and well protected from surface contamination by its depth and low-permeable geologic formations overlying it. Well Variance and Construction Department of Ecology Approved Variance The Washington State Department of Ecology issued a ,BAHB95 variance approval to WAC 173-160-171(3)(b)(iv) on Figure 4-Well Log Locations.Figure from August 7, 2025. This variance was granted due to Department of Ecology. limitations on the property to adequately site a well meeting setbacks to the existing drainfield. This variance was approved pending the successful installation of a 30-foot or deeper surface seal—an increase from the standard 18-foot surface seal.This variance and mitigation indicates the State has approved the reduced setback to the existing drainfield providing their conditions were met. Subject Well Construction The subject well was drilled by Arcadia Drilling, out of Shelton, WA. Well drilling began on October 22, 2025, and concluded on October 23, 2025. The well was constructed with a 34-foot surface seal, and drilled to a total depth of 190-feet below land surface.A screen was installed from 192.5-197.5 feet below land surface. Hydrogeologic Analysis Based upon the stratigraphy and geologic units shown in the well logs for the subject and neighboring wells, there is at least one significant aquifer being utilized in the immediate vicinity under confined conditions. Positive head pressure in all wells show that artesian conditions are present, which indicates the presence of a confining layer above the aquifer. Fine-grained sediments above this aquifer should preclude most vertical migration of groundwater and contaminants,as they will likely flow down gradient away from the source.Any shallow groundwater or septic effluent should reach confining units and travel Bush Geological Consulting,LLC Hydrogeologic Analysis Lilliwaup,Washington February 20,2026 laterally downslope towards surface water. Based on the geology alone, the significant depth of the aquifer beneath the site will preclude any impacts from the setback reduction to the existing drainfield. Conclusions A thorough hydrogeologic analysis was conducted in order to determine any potential impacts to the well from the reduced setback to the upgradient septic drainfield. Based on the review of available records for the new and existing wells in the area, geologic interpretation, the approved setback variance from the Department of Ecology, and the increased depth of the surface seal as a mitigation factor;there should be no negative impacts to the water resource or Public Health from the use of this well as a Group B water source. The geology encountered, the presence of a confined aquifer, and the increased surface seal depth offer equal-to-or-greater protection of environmental health. No additional mitigation should be required, however, ongoing monitoring of drinking water for Bacteria and Nitrates should show if any failing septic systems are impacting the water resource. Closure The statements, conclusions, and recommendations provided in this report are to be exclusively used within the context of this document. They are based on generally accepted hydrogeologic and environmental practices and are the result of analysis by Bush Geological Consulting,LLC staff.This report, and any attachments to it,is for the exclusive use of our client. Unless specifically stated in the document, no warranty, expressed or implied, is made. Respectfully submitted, Bush Geological Consulting, LLC �`�\e 0Washi,2 1 t•' y �R J ukh, r. eol.gist 8 Gj� \ 0liSed Ge°\°' Jeremy Bush 2/20/2026 Jeremy J. Bush, LG, LHG, REHS Principal Hydrogeologist Bush Geological Consulting, LLC Bush Geological Consulting,LLC Hydrogeologic Analysis Lilliwaup,Washington February 20,2026 Appendix A Bush Geological Consulting,EEC Hydrogeologic Analysis Lilliwaup,Washington February 20,2026 Subject Well—BQC129—Scott Standley Well WATER WELL REPORT AI',;u' rc ''-k"" - Nctr_r of Intl=No WEfi 3 WS ECOLOGY L'rxaSsEctur±55'cUID Tap No.n cal Tarr oftl®& fl�^'::h�•tp•-n 1a ,;.,aslrg,•oo 5,ra...1,"ell No-or 1a!mere than star Nr-E1 Decocammilu o Q. al ilattoemou t f No Wleer filet Penzutce trftciu'Co Prolootof1'oa. R.floo.oa CI Iaa.awl 0 at.e.tiloal PrepeTy Oaoae'4m0 5(v11 L1.ot'+L.�t:t 2O Dr.loom 1,inttman C.r T aaa Barr _1 Calm. Well Strut Askrte 39.N 5t-41f LT! 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' Dm v1 .- as t 4r"t+ bekr Itfi ,goo.uh 0 A7.4vaa roar On "la ant 'ss.rasa-A l.am mass I w j_too w.a 14,23.73 I Amite so-. pm 7retpaanrioa sf watt 5_1_,,"/ W..'cameral u4tcaa moat' C 5'r, it No •Start t'aa+1 102f4,1,._,„„,,,,,,,_,_ Cat-,prate Dote ,.12O425„........_, WELL CON5TRCCTION CERTIFICATION: t eance:41 4 a'4 of atret,'t tril-e:enibile,for ctr3'Ita:hgn elute well.rzl on canrltstre with ail Waf«'xn son.,r11 ccnoTwarre se.mai rl. l.le•tria:.t rood end San inffoa-.ataae t.,aso-d"bast are true m1 my beta►no solldar and Nebel Ht Douro O Trani C P£-NO NA=Cory}phnsart Tkultn Centpaer Arcadia DtilSrt;hoc Sratuitee � AoS'csa PO Box 1 T80 LIten5t alb 3441 L//--- Cr.,Stan.,Lip S1Ne on•WA p&131 Il'IRAME: Spatula's Laeeanx No L'.aaetactee a ...annum',Slglae Refistnetm No ARCADDIQ90KI pate 1673/25