Water Resources Report &

Wastewater Treatment Report

North Bay at Lake Woodmoor

ElPasoCounty,Colorado

Preparedfor:LakeWoodmoorHoldings,LLC1755TelstarDrive,Suite211

ColoradoSprings,Colorado80920

Preparedby:

KiowaProjectNo.15073September4,2018

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

I. Introduction

All utility design for the proposed development has been performed in accordance with theWoodmoor Water and Sanitation District No. 1 Rules and Regulations, revised April 9, 2012,WoodmoorWater and SanitationDistrictNo. 1 System Specifications, June 2014, and theElPasoCountyLandDevelopmentCode. SupportingdesigncalculationsareincludedintheAppendixAofthisreport.

II. ProjectDescription

North Bay at Lake Woodmoor is a proposed multi‐family residential development located innorthern El Paso County, Colorado. The site is located in a portion of the Southeast Quarter ofSection 11, Township 11 South, Range 67 West of the 6th Principal Meridian. The propertyencompassestwoparcelsofwhichoneiscurrentlyplattedunderthesubdivisionnameof‘TheCoveatWoodmoor’. Theproperty is currently undeveloped and covers a total of approximately 7.23acres.Thepropertywillbeplatted/replattedas‘NorthBayatLakeWoodmoor’.Thestreetswillbeprivate and 28 townhome lots will be developed. With the platting of North Bay at LakeWoodmoor,waterandwastewatermainsandserviceswithinthepropertywillbeconstructed.

III. WaterDistributionSystem

TheproposedwaterdistributionsystemforNorthBayatLakeWoodmoorwillbeconnectedtotheexistingWoodmoorWaterandSanitationDistrict (WWSD)watermainat three locations, twooffDeerCreekRoadandtheotherwithintheexistingCoveatWoodmoorsubdivision.Proposedwatermains within North Bay at LakeWoodmoor are all 6‐inch PVC (DR 18). These lines are to beconstructedperWWSDStandardsandSpecifications.

DemandflowcalculationsarecontainedintheAppendixAofthisreport,andareprovidedtotheDistrictforreviewandanalysis.TheUtilityPlanisincludedinAppendixHofthisreportandshowsthelocationsoftheexistingandproposedwaterlinesandassociatedappurtenances.

IV. SanitarySewerCollectionSystem

TheproposedsanitarysewercollectionsystemforNorthBayatLakeWoodmoorwillbeconnectedto the existing WWSD sanitary sewer main in Deer Creek Road with new mains with serviceconnectionsalongtheproposedprivatestreetswithinthedevelopmentlocatedonbothsidesoftheLakeForkofDirtyWomanCreek.Theproposedsanitarysewercollectionsystemwillbecomprisedof existing and new 8‐inch and 12‐inch PVC (SDR 35) gravity sewer constructed per WWSDStandardsandSpecifications.

Wastewater flowcalculations,whicharecontained inAppendixAof thisreport, indicate that thenew8‐inch and12‐inchPVC sanitary sewerswill be adequate forNorthBay at LakeWoodmoorgravity sewer system. The Utility Plan is included in Appendix H of this report and shows thelocationsoftheexistingandproposedsewerlinesandassociatedappurtenances.

Costsforthewastewatersystemareexpectedtobeapproximately$210,423.Thisincludes$65,800for8”PVCsanitarysewermain,$42,700for12”PVCsanitarysewermain,$59,475formanholes,and$42,448forservices.

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

V. WastewaterCollectionandTreatment

ThesanitarysewercollectionsystemthatwillbeconstructedwithNorthBayatLakeWoodmooriscomprisedof8inchPVC(SDR35)gravitysewer. ThecollectionsystemwithinNorthBayatLakeWoodmoorisanticipatedforbyWWSDassummarizedinSection4.0oftheDistrict’sLongRangePlan(LRP).ThecompleteLRPhasnotbeenincludedinthisreport.ContainedwithinAppendixBisacommitmenttoservethesubdivisionfromtheDistrict.

Wastewater conveyed by the existing WWSD’s collection system outfalls to the Tri‐LakesWastewaterTreatmentPlant.AdescriptionofthePlant’scurrentoperationandfutureprojectsiscontainedwithintheLRP.ThePlanthasadequatecapacitytotreatanddischargewastewaterflowsgenerated byNorth Bay at LakeWoodmoor in conformancewith current CDPHE standards andregulations.

VI. Water Supply, Resources and Quality

Containedwithin Appendix C of this report is thewater supply summary forNorth Bay at LakeWoodmoor. The estimated water supply requirements listed on theWater Supply InformationSummary is based upon the District’s average domestic water supply of 0.342 acre‐feet perdwellingunitperyearandisinclusiveofirrigation.ProjectsthatexceedthisaverageconsumptioncanarrangeforsupplementalwatersupplyfromtheDistrict.

IncludedinAppendixDisacopyoftheExchangeAgreement,showingthatLaPlataCommunities,asthesuccessortoKABPenkey,doesholdasupplementalwateragreement.Theattachedcopyisportion of the original agreement due to its size. Appendix E contains a copy of the WaterAllocationNotice.

Summarized in the District’s LRP is a description of the existing water supply and distributionsystem, aswell as descriptions for possible future improvements and expansions to the system.ThewaterrequirementsnecessaryforNorthBayatLakeWoodmoorhavebeenaccountedforintheLRP.Summarizedinsection2.4.1.1oftheLRParethecurrentwaterrightsownedbytheDistrict.Summarized is section 3 is a summary of the future water system including on Table 3‐1, asummaryoftheDistrict’swaterservicecommitments.Excerptsfromsection3havebeenincludedinAppendixFwiththepertinentportionshighlighted. BaseduponthedatacontainedintheLRPregardingthewaterresourcesthatareavailabletotheDistrict,subdivisionsservedbyWWSDwillbe suppliedwithwater resourcesmeeting the requirements of El Paso County’s 300‐yearwatersupply regulations for future subdivisions relying on the Denver aquifer. Contained withinAppendixBisacommitmenttoservememorandumforNorthBayatLakeWoodmoor.

ThequalityofthewaterproducedforbytheWWSDfordomesticandcommercialconsumptionissubject to regulationsprescribedby theCDPHE that limit theamountof certain contaminants intreated or untreated water. Contained within Appendix G is the District’s 2014 ConsumerConfidence Report that summarizes the quality of the water produced by the District and itsconformancewithCDPHEregulations.

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

APPENDIXAWaterDemandCalculations

WastewaterCalculations

North Bay at Lake WoodmoorWater Demand Calculations

Single-Family 28 unitsPersons per Dwelling Unit 3.5 persons

98 persons

1 Person = 150 gpdAverage Daily Flow (ADF) = 14,700 gpd ADF = persons x gpd

Peak Flow Factor = 6Peak Hourly Flow (PHF) = 88,200 gpd PHF = ADF x Peak Flow Factor

Single-Family PHF = 61 gpm

15073 Utility Calcs.xls Water Demand CalcsDate Printed: 11/8/2016

Kiowa Engineering CorporationProject No. 15073

North Bay at Lake Woodmoor

Wastewater Calculations

Single-Family 28 unitsPersons per Dwelling Unit 3.5 persons

98 persons

1 Person = 100 gpdAverage Daily Flow (ADF) = 9,800 gpd ADF = persons x gpd

Peak Flow Factor = 4Peak Hourly Flow (PHF) = 39,200 gpd PHF = ADF x Peak Flow Factor

Single-Family PHF = 27 gpm

Total PHF = 43 gpmTotal PHF = 0.10 cfs cfs = gpm / (7.48 gal/ft3) / (60 sec/min)

Pipe (8" SDR35) Capacity = 1.23 cfs Qcap = (1.486/0.009)*0.349*0.1672/3*0.0051/2

Pipe Slope = 0.5%Pipe Capacity is Greater than Total PHF

Pipe (12" SDR35) Capacity = 2.14 cfs Qcap = (1.486/0.009)*0.785*0.252/3*0.00171/2

Pipe Slope = 0.17%Pipe Capacity is Greater than Total PHF

15073 Utility Calcs.xls Wastewater CalcsDate Printed: 4/23/2018

Kiowa Engineering CorporationProject No. 15073

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

APPENDIXB

WoodmoorWaterandSanitationDistrictCommitmentLetter

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

AppendixCWaterSupplySummary

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

AppendixDLaPlataExchangeAgreement(Partial)

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

AppendixEWaterAllocationNotice

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

AppendixFPortionofWWSDLRP

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

AppendixG2014ConsumerConfidenceReport

15073 Master Utility Report-Final Plat.docxeport.docx Kiowa Engineering Corporation

AppendixHUtilityPlan