Drainage Letter - Microsoft · PDF fileSee Appendix B for Design Procedure ... The...

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Drainage Letter

for:

CRACKERJACK or Claremont Business Park, Filing 2, Lot 21 El Paso County, Colorado Springs, Colorado

Prepared for:

Hammers Construction, LLC. 1411 Woolsey Heights

Colorado Springs, CO 809151 Phone (719) 571-1599 Attn: Yury Dyachenko

Prepared by:

Galloway & Company, Inc. 1755 Telstar Drive, Suite 107 Colorado Springs, CO 80918

Phone (719) 900-7220 Attn: Todd Cartwright PE, LEED AP

Dated:

June 29, 2017

Revised 08/24/17

El Paso County Project# PPR-17-031

ii

CERTIFICATION STATEMENTS

The attached drainage plan and report were prepared under my direction and supervision and are correct to the best of my knowledge and belief. Said drainage report has been prepared according to the criteria established by the County for drainage reports and said report is in conformity with the applicable master plan of the drainage basin. I accept responsibility for any liability caused by any negligent acts, errors or omissions on my part in preparing this report. Todd Cartwright Date

Registered Professional Engineer

State of Colorado No. 33365

Developer’s Statement:

I, the developer have read and will comply with all of the requirements specified in this drainage report and plan. ________________________________________ Hammers Construction By: _____________________________________ Title: ____________________________________ Address: 1411 Woolsey Heights

Colorado Springs, CO 80915

EL PAASO COUNTY:

Filed in accordance with the requirements of the Drainage Criteria Manual, Volumes 1 & 2, El Paso County Engineering Criteria Manual and Land Development Code as amended. ________________________________________ _______________________ Jennifer Irvine, P.E. County Engineer/ECM Administrator Date Conditions:

1 Hammers Construction CBP 2, Lot 21 – Crackerjack 6/27/17

Galloway & Company, Inc. ● 719.900.7220 ● 1755 Telstar Drive, Suite 107 ● Colorado Springs, CO 80920 ● www.GallowayUS.com

I. GENERAL LOCATION AND DRAINAGE DESIGN DESCRIPTION

A. Purpose

The purpose of this letter is to show that there shall be no negative drainage effects associated with the proposed development of Lot 21 within the Claremont Business Park Filing 2A, recorded 4/14/2010 under Reception No. 210713035 of the El Paso County Records. This final drainage letter is being submitted concurrently with the improvement construction plans proposing a light industrial building and the associated drivelines.

B. Property Description

The proposed project site is within the Northeast Quarter of Section 8, Township 14 South, Range 65 West of the 6th Principal Meridian. The site can be further described as bounded by Cole View on the north and McClain Point on the east. See Figure 1. Lot 21 consists of approximately 0.3 acres and is currently vacant. The proposed project consists of all infrastructure typically associated with light industrial development. Most the site will consist of crushed asphalt, curb, lighting, and landscaping.

C. Existing Drainage Characteristics

The site is currently vacant with a relatively new roadway infrastructure and associated utilities with slopes ranging from 0-4% from northeast to southwest. Flows from the site run in a sheet-flow manner and drain to the northwest portion of the site, and then eventually outfalls to an existing storm sewer collection system at the northwest corner of Lot 21 and ultimately discharges to the East Fork Sand Creek.

Lots 18-20 are developed to the east of the CrackerJack Site. Lot 20 has a sand filter basin that is designed to discharge 6.8 CFS in the 100 year event (1.1 CFS in 5 year event). This flow is routed to the drainage easement and the drain pan located in the easement. The drain pan has been sized to contain the 100 year flow.

D. Floodplain Statement

According to LOMR 06-08-B137P adjusted the FEMA FIRM map 08041C0752F, effective March 17, 1997, the site lies within Unshaded Zone X. Unshaded Zone X is identified as areas of 500-year flood; areas of 100-year flood with average depths of less than 1 foot.

E. Proposed Drainage Characteristics

Most the site will consist of asphalt, crushed asphalt, a building and, a Storm Water Quality Facility and landscaping. The subject site was previously analyzed within the Final Drainage Report (FDR) for Claremont Business Park Filing 2 prepared by Matrix Design Group approved 04/23/2007. Onsite Water Quality Control Volume (WQCV) is required but on-site storm water detention is not required per the FDR for Claremont Business Park Filling 2A. The post-developed flows from Lot 21 shall be directed to a Storm Water Quality Facility (rain garden type), which is located along the western property line along Cole View. Flows enter the Rain Garden near the northwestern portion of the site via a storm drain system (1.4 cfs for the 5-

Hammers Construction CBP 2, Lot 21 – Crackerjack 6/27/17


yr and 2.7 cfs for the 100-yr). See Appendix B for the hydraulic design details of the storm drain system. Flows also enter the Rain Garden near the northwestern portion of the site via curb opening (1 cfs for the 5-yr and 3 cfs for the 100-yr). The Rational calculations were made knowing an existing hydraulic soil group (HSC) of type A (See Appendix B). Flows that penetrate the Rain Garden will discharge into an existing storm drain catch basin within Cole Point. Overflows from the Rain Garden will overtop a berm near the southwestern portion of the site and flow into Cole Point as it does currently.

F. Water Quality Provisions – Rain Garden

The proposed Rain Garden will be built per Urban Drainage and Flood Control recommendations (see Appendix B for additional information on the Rain Garden). The volume provided by the Rain Garden is approximately 297 cu-ft which exceeds the required Water Quality Control Volume of 263 cu-ft. The size of the Rain Garden is based on an impervious area of 75%, a drainage area of approximately 4.8 acres, and a runoff of 0.6-inches of precipitation per City of

Colorado Springs – Drainage Criteria Manual Volume 2. See Appendix B for Design Procedure Form for Sand Filter.

G. The Four-Step Process

Per the Engineering Criteria Manual - Appendix 1, the four-step process was implemented for

stormwater management:

Step 1: Employ Runoff Reduction Practices. Due to the small site, employing runoff reduction

practices is not possible.

Step 2: Stabililze Drainageways. There are no stream channels onsite to stabilize.

Step 3: Provide Water Quality Capture Volume (WQCV). The WQCV is being provided by a

Rain Garden located on the western edge of the property.

Step 4: Consider Need for Industrial and Commercial BMPs. Due to the small-scale

development of the site, no additional source controls are necessary.

H. Private Water Quality Facility – Cost Estimate

Private Water Quality Facility (rain garden): $6,000

I. Drainage Fees

Since the property has already been platted, no drainage fees are required to be paid.

II. CONCLUSIONS

The proposed runoff patterns for the site have no negative drainage effects within Claremont Business

Park Filing 2A or the surrounding area. The methodologies and drainage criteria used in the overall

drainage design meet the current County DCM requirements. This drainage letter is in conformance

Hammers Construction CBP 2, Lot 21 – Crackerjack 6/27/17


with the Final Drainage Report for Claremont Business Park Filing 2.

III. REFERENCES

1. El Paso County Drainage Criteria Manual, El Paso County, most recent version.

2. Urban Storm Drainage and Criteria Manual, Urban Drainage and Flood Control District, most

recent version. 3. Final Drainage Report for Claremont Business Park Filing No. 2, November 2006, by the Matrix

Design Group. 4. Final Drainage Report for , Lots 18-20 Claremont Business Park Filing No. 2, April 2017, by the

Westworks Engineering, EPC PCD Project File No. PPR172.


APPENDIX A

VICINITY MAP

SITE

VICINITY MAPNTS

HWY 24HWY 24

HWY 24MAR

KSHE

FFEL

RD.

POW

ERS

BLVD

GALLEY RD

OMAHA BLVD

PALMER PARK BLVD

CONSTITUTION AVE

PETE

RSON

RD

Trolley Corners Building515 South 700 East, Suite 3F

303.770.8884 Owww.gallowayUS.com

2016. Galloway & Company, Inc. All Rights Reserved

Salt Lake City, UT 84102

Planning. Architecture. Engineering.

CBP F2, LOT 21HAMMERS CONSTRUCITON7315 McClain PointCOLORADO SPRINGS, CO

FIGURE 1 - VICINITY MAP

HCI 003.01

TAC

TAC

06/27/17

Checked By:

Project No:

Drawn By:

Date:


APPENDIX B

RAIN GARDEN DESIGN INFORMATION


APPENDIX C

HYDRAULIC CALCULATIONS: 1) RATIONAL CALCULATIONS – PROPOSED CONDITION

2) DESIGN PROCEDURE FOR RAIN GARDEN

Sheet 1 of 2

Designer:

Company:

Date:

Project:

Location:

1. Basin Storage Volume

A) Effective Imperviousness of Tributary Area, Ia Ia = 74.0 %

(100% if all paved and roofed areas upstream of rain garden)

B) Tributary Area's Imperviousness Ratio (i = Ia/100) i = 0.740

C) Water Quality Capture Volume (WQCV) for a 12-hour Drain Time WQCV = 0.24 watershed inches

(WQCV= 0.8 * (0.91* i3 - 1.19 * i

2 + 0.78 * i)

D) Contributing Watershed Area (including rain garden area) Area = 13,153 sq ft

E) Water Quality Capture Volume (WQCV) Design Volume VWQCV = 258 cu ft

Vol = (WQCV / 12) * Area

F) For Watersheds Outside of the Denver Region, Depth of d6 = in

Average Runoff Producing Storm

G) For Watersheds Outside of the Denver Region, VWQCV OTHER = cu ft

Water Quality Capture Volume (WQCV) Design Volume

H) User Input of Water Quality Capture Volume (WQCV) Design Volume VWQCV USER = cu ft

(Only if a different WQCV Design Volume is desired)

2. Basin Geometry

A) WQCV Depth (12-inch maximum) DWQCV = 9 in

B) Rain Garden Side Slopes (Z = 4 min., horiz. dist per unit vertical) Z = 4.00 ft / ft

(Use "0" if rain garden has vertical walls)

C) Mimimum Flat Surface Area AMin = 195 sq ft

D) Actual Flat Surface Area AActual = 199 sq ft

E) Area at Design Depth (Top Surface Area) ATop = 546 sq ft

F) Rain Garden Total Volume VT= 279 cu ft

(VT= ((ATop + AActual) / 2) * Depth)

3. Growing Media

4. Underdrain System

A) Are underdrains provided?

B) Underdrain system orifice diameter for 12 hour drain time

i) Distance From Lowest Elevation of the Storage y = 0.3 ft

Volume to the Center of the Orifice

ii) Volume to Drain in 12 Hours Vol12 = 258 cu ft

iii) Orifice Diameter, 3/8" Minimum DO = 1/2 in

Design Procedure Form: Rain Garden (RG)

August 24, 2017

UD-BMP (Version 3.06, November 2016)

Choose One

Choose One

18" Rain Garden Growing Media

Other (Explain):

YES

NO

UD-BMP_v3.06.xlsm, RG 8/24/2017, 9:46 AM

Sheet 2 of 2

Designer:

Company:

Date:

Project:

Location:

5. Impermeable Geomembrane Liner and Geotextile Separator Fabric

A) Is an impermeable liner provided due to proximity

of structures or groundwater contamination?

6. Inlet / Outlet Control

A) Inlet Control

7. Vegetation

8. Irrigation

A) Will the rain garden be irrigated?

Notes:

Design Procedure Form: Rain Garden (RG)

August 24, 2017

Choose One

Choose One

Choose One

Sheet Flow- No Energy Dissipation Required

Concentrated Flow- Energy Dissipation Provided

Plantings

Seed (Plan for frequent weed control)

Sand Grown or Other High Infiltration Sod

Choose OneYES

NO

YES

NO

UD-BMP_v3.06.xlsm, RG 8/24/2017, 9:46 AM

Project:

Basin ID:

Design Information (Input): #1 Horiz. #2 Horiz. #1 Vert. #2 Vert.

Circular Opening: Diameter in Inches Dia. = inches

OR

Rectangular Opening: Width in Feet W = 0.03 ft.

Length (Height for Vertical) L or H = 2.10 ft.

Percentage of Open Area After Trash Rack Reduction % open = 90 %

Orifice Coefficient Co = 0.70

Weir Coefficient Cw = 3.30

Orifice Elevation (Bottom for Vertical) Eo = 0.50 ft.

Calculation of Collection Capacity:

Net Opening Area (after Trash Rack Reduction) Ao = 0.05 sq. ft.

OPTIONAL: User-Overide Net Opening Area Ao = sq. ft.

Perimeter as Weir Length Lw = 4.25 ft.

OPTIONAL: User-Overide Weir Length Lw = ft.

Top Elevation of Vertical Orifice Opening, Top = ft.

Center Elevation of Vertical Orifice Opening, Cen = ft.

Horizontal Orifices Vertical Orifices

Labels Water WQCV #1 Horiz. #1 Horiz. #2 Horiz. #2 Horiz. #1 Vert. #2 Vert. Total Target Volumes

for WQCV, Minor, Surface Plate/Riser Weir Orifice Weir Orifice Collection Collection Collection for WQCV, Minor,

& Major Storage Elevation Flow Flow Flow Flow Flow Capacity Capacity Capacity & Major Storage

W.S. Elevations ft cfs cfs cfs cfs cfs cfs cfs cfs Volumes

(input) (linked) (User-linked) (output) (output) (output) (output) (output) (output) (output) (link for goal seek)

0.00 #N/A 0.00 0.00 0.00 0.00 0.00 0.00 #N/A

0.10 #N/A 0.00 0.00 0.00 0.00 0.00 0.00 #N/A

0.20 #N/A 0.00 0.00 0.00 0.00 0.00 0.00 #N/A

0.30 #N/A 0.00 0.00 0.00 0.00 0.00 0.00 #N/A

0.40 #N/A 0.00 0.00 0.00 0.00 0.00 0.00 #N/A

0.50 #N/A 0.00 0.00 0.00 0.00 0.00 0.00 #N/A

0.60 #N/A 0.44 0.08 0.00 0.00 0.00 0.00 #N/A

0.70 #N/A 1.25 0.12 0.00 0.00 0.00 0.00 #N/A

0.80 #N/A 2.30 0.15 0.00 0.00 0.00 0.00 #N/A

0.90 #N/A 3.54 0.17 0.00 0.00 0.00 0.00 #N/A

1.00 #N/A 4.95 0.19 0.00 0.00 0.00 0.00 #N/A

1.10 #N/A 6.51 0.21 0.00 0.00 0.00 0.00 #N/A

1.20 #N/A 8.20 0.22 0.00 0.00 0.00 0.00 #N/A

1.30 #N/A 10.02 0.24 0.00 0.00 0.00 0.00 #N/A

1.40 #N/A 11.96 0.25 0.00 0.00 0.00 0.00 #N/A

1.50 #N/A 14.01 0.27 0.00 0.00 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

#N/A #N/A #N/A #N/A #N/A 0.00 0.00 #N/A

Routing 5: Water flows separately through WQCV plate, #1 horizontal opening, #2 horizontal opening, #1 vertical opening, and #2 vertical

opening. The sum of all four will be applied to culvert sheet.

STAGE-DISCHARGE SIZING OF THE WEIRS AND ORIFICES (INLET CONTROL)

Crackerjack

Current Routing Order is #5

W .S. EL. W Q

W .S. EL . M inor

W .S. EL . Major

W Q

H1

H2

V1 V2

Routing Order #1 (Standard)

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W.S. E L. Design Storm

WQ

H1

R outing Order #3 (Single Stage) Routing Ord er #4

V2

V1

H1

WQ

W .S. EL. Major

W.S. E L. M inor

W.S. E L. W Q

W .S. EL . Em ergency Spillway

E mergen cy Overflow in to Pipe- H2

V 2

H1

W Q

W .S. EL. M ajor

W .S. EL. Minor

W .S. EL. W Q V 1

Routing Order #2

UD-Detention_v2.34.xls, Outlet 8/24/2017, 6:32 PM

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APPENDIX D

1) NRCS Soil Study

2) FEMA FIRMETTE

United StatesDepartment ofAgriculture

A product of the NationalCooperative Soil Survey,a joint effort of the UnitedStates Department ofAgriculture and otherFederal agencies, Stateagencies including theAgricultural ExperimentStations, and localparticipants

Custom Soil ResourceReport for

El Paso CountyArea, Colorado

NaturalResourcesConservationService

June 14, 2017

Soil MapThe soil map section includes the soil map for the defined area of interest, a list ofsoil map units on the map and extent of each map unit, and cartographic symbolsdisplayed on the map. Also presented are various metadata about data used toproduce the map, and a description of each soil map unit.

8

9

Custom Soil Resource ReportSoil Map

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526804 526812 526820 526828 526836 526844 526852

526804 526812 526820 526828 526836 526844 526852

38° 50' 54'' N10

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38° 50' 52'' N

104°

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104°

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Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS840 15 30 60 90

Feet0 4 9 18 27

MetersMap Scale: 1:336 if printed on A portrait (8.5" x 11") sheet.

Soil Map may not be valid at this scale.

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10

Map Unit Legend

El Paso County Area, Colorado (CO625)

Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI

28 Ellicott loamy coarse sand, 0 to5 percent slopes

0.3 100.0%

Totals for Area of Interest 0.3 100.0%

Map Unit DescriptionsThe map units delineated on the detailed soil maps in a soil survey represent thesoils or miscellaneous areas in the survey area. The map unit descriptions, alongwith the maps, can be used to determine the composition and properties of a unit.

A map unit delineation on a soil map represents an area dominated by one or moremajor kinds of soil or miscellaneous areas. A map unit is identified and namedaccording to the taxonomic classification of the dominant soils. Within a taxonomicclass there are precisely defined limits for the properties of the soils. On thelandscape, however, the soils are natural phenomena, and they have thecharacteristic variability of all natural phenomena. Thus, the range of someobserved properties may extend beyond the limits defined for a taxonomic class.Areas of soils of a single taxonomic class rarely, if ever, can be mapped withoutincluding areas of other taxonomic classes. Consequently, every map unit is madeup of the soils or miscellaneous areas for which it is named and some minorcomponents that belong to taxonomic classes other than those of the major soils.

Most minor soils have properties similar to those of the dominant soil or soils in themap unit, and thus they do not affect use and management. These are callednoncontrasting, or similar, components. They may or may not be mentioned in aparticular map unit description. Other minor components, however, have propertiesand behavioral characteristics divergent enough to affect use or to require differentmanagement. These are called contrasting, or dissimilar, components. Theygenerally are in small areas and could not be mapped separately because of thescale used. Some small areas of strongly contrasting soils or miscellaneous areasare identified by a special symbol on the maps. If included in the database for agiven area, the contrasting minor components are identified in the map unitdescriptions along with some characteristics of each. A few areas of minorcomponents may not have been observed, and consequently they are notmentioned in the descriptions, especially where the pattern was so complex that itwas impractical to make enough observations to identify all the soils andmiscellaneous areas on the landscape.

The presence of minor components in a map unit in no way diminishes theusefulness or accuracy of the data. The objective of mapping is not to delineatepure taxonomic classes but rather to separate the landscape into landforms orlandform segments that have similar use and management requirements. Thedelineation of such segments on the map provides sufficient information for thedevelopment of resource plans. If intensive use of small areas is planned, however,

Custom Soil Resource Report

11

onsite investigation is needed to define and locate the soils and miscellaneousareas.

An identifying symbol precedes the map unit name in the map unit descriptions.Each description includes general facts about the unit and gives important soilproperties and qualities.

Soils that have profiles that are almost alike make up a soil series. Except fordifferences in texture of the surface layer, all the soils of a series have majorhorizons that are similar in composition, thickness, and arrangement.

Soils of one series can differ in texture of the surface layer, slope, stoniness,salinity, degree of erosion, and other characteristics that affect their use. On thebasis of such differences, a soil series is divided into soil phases. Most of the areasshown on the detailed soil maps are phases of soil series. The name of a soil phasecommonly indicates a feature that affects use or management. For example, Alphasilt loam, 0 to 2 percent slopes, is a phase of the Alpha series.

Some map units are made up of two or more major soils or miscellaneous areas.These map units are complexes, associations, or undifferentiated groups.

A complex consists of two or more soils or miscellaneous areas in such an intricatepattern or in such small areas that they cannot be shown separately on the maps.The pattern and proportion of the soils or miscellaneous areas are somewhat similarin all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example.

An association is made up of two or more geographically associated soils ormiscellaneous areas that are shown as one unit on the maps. Because of presentor anticipated uses of the map units in the survey area, it was not consideredpractical or necessary to map the soils or miscellaneous areas separately. Thepattern and relative proportion of the soils or miscellaneous areas are somewhatsimilar. Alpha-Beta association, 0 to 2 percent slopes, is an example.

An undifferentiated group is made up of two or more soils or miscellaneous areasthat could be mapped individually but are mapped as one unit because similarinterpretations can be made for use and management. The pattern and proportionof the soils or miscellaneous areas in a mapped area are not uniform. An area canbe made up of only one of the major soils or miscellaneous areas, or it can be madeup of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.

Some surveys include miscellaneous areas. Such areas have little or no soilmaterial and support little or no vegetation. Rock outcrop is an example.


12

El Paso County Area, Colorado

28—Ellicott loamy coarse sand, 0 to 5 percent slopes

Map Unit SettingNational map unit symbol: 3680Elevation: 5,500 to 6,500 feetMean annual precipitation: 13 to 15 inchesMean annual air temperature: 47 to 50 degrees FFrost-free period: 125 to 145 daysFarmland classification: Not prime farmland

Map Unit CompositionEllicott and similar soils: 85 percentEstimates are based on observations, descriptions, and transects of the mapunit.

Description of Ellicott

SettingLandform: Flood plains, stream terracesLandform position (three-dimensional): TreadDown-slope shape: LinearAcross-slope shape: LinearParent material: Sandy alluvium

Typical profileA - 0 to 4 inches: loamy coarse sandC - 4 to 60 inches: stratified coarse sand to sandy loam

Properties and qualitiesSlope: 0 to 5 percentDepth to restrictive feature: More than 80 inchesNatural drainage class: Somewhat excessively drainedRunoff class: Very lowCapacity of the most limiting layer to transmit water (Ksat): High to very high (5.95

to 19.98 in/hr)Depth to water table: More than 80 inchesFrequency of flooding: FrequentFrequency of ponding: NoneAvailable water storage in profile: Low (about 4.1 inches)

Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 7wHydrologic Soil Group: AEcological site: Sandy Bottomland LRU's A & B (R069XY031CO)Other vegetative classification: SANDY BOTTOMLAND (069AY031CO)Hydric soil rating: No

Minor Components

Fluvaquentic haplaquollPercent of map unit: Landform: SwalesHydric soil rating: Yes


13

Other soilsPercent of map unit: Hydric soil rating: No

PleasantPercent of map unit: Landform: DepressionsHydric soil rating: Yes


14

ReferencesAmerican Association of State Highway and Transportation Officials (AASHTO).2004. Standard specifications for transportation materials and methods of samplingand testing. 24th edition.

American Society for Testing and Materials (ASTM). 2005. Standard classification ofsoils for engineering purposes. ASTM Standard D2487-00.

Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification ofwetlands and deep-water habitats of the United States. U.S. Fish and WildlifeService FWS/OBS-79/31.

Federal Register. July 13, 1994. Changes in hydric soils of the United States.

Federal Register. September 18, 2002. Hydric soils of the United States.

Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydricsoils in the United States.

National Research Council. 1995. Wetlands: Characteristics and boundaries.

Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_054262

Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification formaking and interpreting soil surveys. 2nd edition. Natural Resources ConservationService, U.S. Department of Agriculture Handbook 436. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577

Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department ofAgriculture, Natural Resources Conservation Service. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580

Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service andDelaware Department of Natural Resources and Environmental Control, WetlandsSection.

United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps ofEngineers wetlands delineation manual. Waterways Experiment Station TechnicalReport Y-87-1.

United States Department of Agriculture, Natural Resources Conservation Service.National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/home/?cid=nrcs142p2_053374

United States Department of Agriculture, Natural Resources Conservation Service.National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/landuse/rangepasture/?cid=stelprdb1043084

15

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_054262






http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/home/?cid=nrcs142p2_053374

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/home/?cid=nrcs142p2_053374

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/landuse/rangepasture/?cid=stelprdb1043084

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/landuse/rangepasture/?cid=stelprdb1043084

United States Department of Agriculture, Natural Resources Conservation Service.National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/scientists/?cid=nrcs142p2_054242

United States Department of Agriculture, Natural Resources Conservation Service.2006. Land resource regions and major land resource areas of the United States,the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053624

United States Department of Agriculture, Soil Conservation Service. 1961. Landcapability classification. U.S. Department of Agriculture Handbook 210. http://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf


16

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/scientists/?cid=nrcs142p2_054242

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/scientists/?cid=nrcs142p2_054242



http://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf

http://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf


APPENDIX E

Drainage Map

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Drainage Letter - Microsoft · PDF fileSee Appendix B for Design Procedure ... The...

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