New Zealand GeoNet: A Geological Hazards Monitoring and Data Collection System
City of Colorado Springs Geological Hazards Ordinance...[New]: Final geological hazards report and...
Transcript of City of Colorado Springs Geological Hazards Ordinance...[New]: Final geological hazards report and...
City of Colorado Springs�Geological Hazards Ordinance
Peter Wysocki, AICP Planning and Community Development Director
Background
o Originally adopted in 1996 o Subsequent amendments, most recent in 2011 o New amendments in 2017
WhenRequired?
• Expansivesoilsandexpansiverock;• Unstableorpoten;allyunstableslopes;• Landslideareasorpoten.allandslideareas;• Debrisflowanddebrisfans;• Rockfall;• Subsidenceandabandonedminingac;vity;• Shallowwatertables;• Groundwatersprings;• Floodproneareas;• Collapsiblesoils;• Faults;• Landfillsandareasofuncontrolledandundocumentedfill;and• Steeplydippingbedrock.
ApplicableProjects
RequiredwithsubmiMalof:• Neworupdatedmasterplans• Rezoning,ifrequiredbydirector• Preliminaryplats• Finalplats• Developmentplans• WestofI-25,unlesswaived
Exemp;onsandWaivers
• ProjectseastofI-25areexempt,unlesscertaingeologichazardsareknown
• Waiversmaybegrantedadministra;velyforprojectswestofI-25ifpriorandrelevantstudyhasbeenprepared,orifthesiteisnotinanhazardarea
KeyRequirements Ingeneral,thegeologicalhazardstudyshallbeofsufficientdetailandscopeto:• Iden;fythegeologichazardsaffec;ngthedevelopmentsite;
• Analyzethepoten;alnega;veimpactsthegeologichazardswillhaveupon
theproposedproject;
• Providemi;ga;ontechniques,whichwillreducetoacceptablestandardstheriskposedtothedevelopmentbyanyiden;fiedgeologichazards;
• Analyzepoten;alimpactstheproposedprojectwillhaveonsurroundingproper;esorpublicfacili;esrelatedtoexis;nggeologichazards;and
• Providerecommenda;onstobeincorporatedintotheproposedprojectwhichmi;gatesignificantpoten;alimpactstosurroundingproper;esorpublicfacili;es.
KeyRequirements
Theconclusionsandrecommenda;onsofthestudyshallbebasedupon:• SiteSpecificSubsurfaceInves;ga;ons:Thisisnotrequiredformaster
planlevelstudies;
• SiteReconnaissance:Sitereconnaissancetoiden;fythegeologicfeaturesofthesiteandsurroundingproperty;
• PreviousGeologicReports:Reviewofpreviousgeologicreportswithincloseproximitytothesubjectsite;
• GeologicMapping:Reviewofpastgeologicmappinginthearea;and
• ExperienceOfGeologist:Conclusionsdrawnfromtheexperienceofthereviewinggeologist.
ReviewProcess
ReviewProcess
• GeohazardreportsubmiMedwithlanddevelopmentapplica;on
• GHRsenttoCGSforreview• CGSprovidescommentstocitystaffandapplicant
– CGSandapplicanthaveflexibilitytoworkdirectly
• CGScommentsincorporatedinthelanddevelopmentapproval
• CitystaffverifiesfinalrevisionstotheGHR
• Disclosurestatementonplatordevelopmentplan
A]erthe2014-2015raineventsandlandslides,evalua;onoftheordinanceensued…
…Everyonewaseagerandexcited
KeyShort-ComingsIden;fied
• [Lackof]homebuyerawareness
• Disclosurestatementtoovague
• [Lackof]reviewoffinalreportsanddevelopmentplansbyCGS
• [Lackof]requirementofgeologicalhazardstudiesforsingle-familyhomes
• [Lackof]cer;fica;on/verifica;onofas-builtsingle-familyhomes
• Noanalysisofimpactstosurroundingproper;es
…a6erstakeholderprocess
KeyModifica;ons
[New]:TheManagermayrequestasite-specificgeologichazardstudyinconjunc;onwithabuildingpermitforanew,reconstruc;onoranexpansionofthebuildingfootprintofmorethan50%ofasingle-familyorduplexbuildingwherenopreviousgeologichazardstudyhasbeenreviewedbytheCityaspartofthemasterplan,zonechange,developmentplan,preliminaryplatorfinalplat.
KeyModifica;ons SuggestProvidemi;ga;ontechniques,whichwillminimizereducetoacceptablestandardstheriskposedtothedevelopmentbyanyiden;fiedgeologichazards.;[New]:Analyzepoten;alimpactstheproposedprojectwillhaveonsurroundingproper;esorpublicfacili;esrelatedtoexis;nggeologichazards;and[New]:Providerecommenda;onstobeincorporatedintotheproposedprojectwhichmi;gatesignificantpoten;alimpactstosurroundingproper;esorpublicfacili;es.
KeyModifica;ons [New]:FinalgeologicalhazardsreportandplanssentbacktoCGSforreviewpriortotheCity’sfinalapprovalofapplicableapplica;ons.CGStoreviewwithin14days[New]:Forsingle-familyhomesandduplexes,anImprovementLoca;onCer;ficate(ILC)mustbesubmiMedtotheCitypriortotheissuanceofaCer;ficateofOccupancybythePikePeakRegionalBuildingDepartmentDisclosurestatementtoiden;fythespecificgeologicalhazard(s)presentontheproperty
• Moratoriumonnewdevelopmentand/orbuildingpermits
– Notsupported• Formalrealestatedisclosurestatementswithpropertytransfers
– Citydoesnothaveauthoritytoregulatelandtransac;ons• Overlayzoning/;tleencumbrance
– Notsupported– Nega;veaffectonpropertyvalues– Imprecisemapping
• Cer;fica;onbygeologist/geotechnicalengineerthatdevelopment/buildingconstruc;oncompletelyfollowedrecommenda;onsofthegeohazardreport– Notsupported– Liabilityinsuranceforfirms/professionals
OtherConsidera;ons