issue for permit, revision a - whatcom county, wa

GREEN APPLE PROJECT: OSBL

STORMWATER SITE PLAN

ISSUE FOR PERMIT, REVISION A

REG NO. REG092 PHILLIPS 66 NO. 18030

ANVIL NO. 108976

NOVEMBER 21, 2019

Whatcom County Planning & Development Services

RECEIVEDDecember 19, 2019

GREEN APPLE RENEWABLE FUELS, LLC GREEN APPLE PROJECT: OSBL


REG092/P66 18030 PAGE i OF ii ISSUE FOR PERMIT, REVISION A ANVIL 108976 NOVEMBER 21, 2019

TABLE OF CONTENTS

1.0 STORMWATER SITE PLAN SUMMARY .......................................................................................... 1

2.0 PROJECT LOCATION AND BASIN AREA....................................................................................... 2

3.0 SOILS ANALYSIS INFORMATION ................................................................................................... 4

4.0 GEOTECHNICAL ANALYSIS ............................................................................................................ 6

5.0 PROJECT LAYOUt – OSBL .............................................................................................................. 6

6.0 COMPLIANCE WITH MINIMUM REQUIREMENTS ........................................................................ 10

6.1 MR1: Stormwater Site Plan ............................................................................................... 10

6.2 MR2: Construction Stormwater Pollution Prevention Plan ............................................... 11

6.3 MR3: Source Control of Pollution – Rail Facility ............................................................... 12

6.4 MR4: Preservation of Natural Drainage Systems and Outfalls – Rail Facility .................. 12

6.5 MR5: Onsite Stormwater Management – Rail Facility ...................................................... 13

6.6 MR6: Runoff Treatment – Rail Facility .............................................................................. 13

6.7 MR7: Flow Control – Rail Facility ...................................................................................... 15

6.8 MR8: Wetlands Protection – Rail Facility .......................................................................... 16

6.9 MR9: Operations and Maintenance – Rail ........................................................................ 17

7.0 EASEMENTS, TRACTS, AND COVENANTS ................................................................................. 17

8.0 BOND QUANTITIES WORKSHEET ................................................................................................ 17

9.0 LIST OF APPENDICES.................................................................................................................... 17

10.0 REVISION LOG ................................................................................................................................ 18



REG092/P66 18030 PAGE ii OF ii ISSUE FOR PERMIT, REVISION A ANVIL 108976 NOVEMBER 21, 2019

ENGINEER’S

DECLARATION

I, Gregory A Van Wagner, a Professional Engineer registered in the State of Washington as a

Professional Engineer, do hereby declare that the Stormwater Design Report, titled Green

Apple Project Stormwater Site Plan, and dated November 21 , 2019, was prepared by me or

under my personal supervision, and that said Report was prepared in accordance with

generally accepted engineering practices. I hereby affirm that to the best of my knowledge,

information, and belief, subject Report was prepared in full compliance with the Whatcom

County Stormwater Ordinance, Whatcom County #94-022, Whatcom County Code

20.80.630, and in compliance with the Whatcom County Development Standards and all

Technical Standards adopted hereunder.

Gregory A. Van Wagner, PE #28888

November 21, 2019

Note to reader – This document is best viewed when printed or copied in color. Otherwise, the

pictorial guidance it contains will be significantly reduced and the reader will find some line

work difficult to follow.

Also, the scope of this document is for the in-plant Outside Battery Limits (OSBL) area. A

second portion of the overall project takes place on the east side of the refinery that is Worley

scope and will be delivered by Worley for all permitting efforts.



REG092/P66 18030 PAGE 1 of 18 ISSUE FOR PERMIT, REVISION A ANVIL 108976 NOVEMBER 21, 2019

1.0 STORMWATER SITE PLAN SUMMARY

This Stormwater Site Plan outlines the applicable drainage regulations and presents supporting

calculations to demonstrate that the proposed stormwater system complies with the Whatcom

County Code (WCC) Chapter 20.80.630 Stormwater and Drainage and in accordance with the

2012 Stormwater Management Manual for the Western Washington, 2014 amendment (DOE

Manual or Manual). In addition, a SEPA application/determination and the Wetland Mitigation

Report prepared by AECOM will indicate further requirements for this project. This stormwater

site plan is supplemental documentation to the other submitted project plans and applications.

The Green Apple Renewable Fuels, LLC Green Apple project is a partnership between

Renewable Energy Group (REG) and Phillips 66 (P66) to develop a co-located renewable

synthetic fuels plant inside the refinery fence at P66’s Ferndale Refinery; refer to Figures 1 and

2. Green Apple will produce renewable diesel and liquid co-products—naphtha and liquefied

petroleum gas (LPG). Some storm runoff from the proposed rail area will be sent to the P66

Ferndale Refinery for further processing at the onsite wastewater treatment plant (WWTP). The

Green Apple project will be designed to operate jointly with the refinery.

The proposed project involves two separate areas within the refinery boundary where

improvements are planned:

• Inside Battery Limits (ISBL). This is the new process unit to be developed in an existing

open area in P66 Ferndale Refinery’s northeast property. This scope is being developed by

Worley.

• Outside Battery Limits (OSBL). This is the additional infrastructure required for the project

outside of the new processing unit. This scope is being developed by Anvil Corporation and

includes the following:

- Proposed Rail Facility: Expansion of the rail rack and storage track area in the northwest

corner of the refinery, including rail lateral, storage tracks, and unloading rack. The rail

improvements layout is still being defined, and current design may be revised.

- Inside Refinery Improvements: Additional tankage building modifications, process

equipment areas, and piping systems.

The ISBL and OSBL areas drain to different discharge points and will have separate stormwater

plans. The focus of this report is on the OSBL project area.

The OSBL has two distinct stormwater discharge conditions. The OSBL inside plant

improvements stormwater will discharge to the existing refinery sewer system and pass through

the refinery wastewater treatment plant prior to offsite discharge. The proposed rail facility

expansion will have two distinct stormwater discharge locations. The proposed rail facility

expansion unloading rack area and storage track area will be routed to the refinery sewer system.

The incoming lateral track area drainage and upland drainage will be routed to the wooded area

west of the developed refinery to an existing stormwater outfall.




The Phillips 66 Ferndale Refinery has been issued a National Pollutant Discharge Elimination

System Permit (No. WA0002984) (NPDES Permit) by the Washington State Department of

Ecology that provides the regulatory requirements for the discharge of stormwater offsite and

into the waters of the state. This permit issued March 11, 2014, and effective April 1, 2014,

requires the update and implementation of a site-specific Stormwater Pollution Prevention Plan

(SWPPP). This plan establishes the Best Management Practices (BMPs) and the pollution

prevention project team requirements necessary to identify, reduce, eliminate, and/or prevent the

discharge of stormwater pollutants in compliance with this NPDES Permit. The SWPPP portion

of this site plan addresses only the stormwater discharges that are independent of the site’s

wastewater treatment system.

2.0 PROJECT LOCATION AND BASIN AREA

The project is located within Phillips 66 Refinery, 3901 Unick Road, Ferndale, Washington, in

Whatcom County. The subject basin areas are on the south side of Unick Road, which drains

southward towards Georgia Strait. The project site latitude and longitude coordinates are as

follows:

• 48.833° N

• 122.693° W

Additional project information includes the following:

• The project’s parcel number is 390133197340.

• The land use designation is HII – Heavy Impact Industrial.

• The project is inland from any shoreline land-use designations/restrictions.

Figure 1. Site Vicinity Map

Project Location




Figure 2. Project Location Map

Figure 3. Existing Site Conditions – Rail Area Upland Outfall Location

East Side (ISBL) Project Location Worley Scope

(Yellow Boundary) P66

Refinery

Rail Lateral

and Rack Location

In-plant (OSBL) Project Location

Anvil Scope (Red Boundary)




Figure 4. Rail Area Upland Outfall – Storm Water Discharged to Wooded Wetland Area to the West of M Street

3.0 SOILS ANALYSIS INFORMATION

The drainage Manual requires large development drainage plans to include a soil analysis if

existing soils information is not adequate. This report used information from the Web Soil

Survey (WSS), which provides soil data and information produced by the National Cooperative

Soil Survey. It is operated by the USDA Natural Resources Conservation Service (NRCS) and

provides access to the largest natural resource information system in the world

(http://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx).

Soils information at the project site is described in the Soil Survey of Whatcom County Area,

Washington, published by the NRCS. Soils underlying the project site are composed of the

Whitehorn silt loam (#184) soil series with Urban Land (#171), Kickerville silt loam (#79 & 80),

and Birchbay silt loam (#12, 13, and 14) located along the perimeter of the site. The soils are

classified as Hydrologic Group C/D soils. Appendix B of this report contains copies of the

NRCS soils boundary map, soil descriptions, and a table with the hydrologic group classification.

Also, see the figure below for a summary view.




Figure 5. Summary View of Soils




Figure 6. Soils Information

For the purpose of drainage characteristics, the soil is assumed to be Group C per the Web Soil

Survey (WSS) and Group C for the Western Washington Hydrology Model (WWHM) software

per guidance and modelling instructions provided with the program. These soils are

Glaciomarine Drift deposits composed of low permeability pebbly, sandy clay that will have a

very slow infiltration rate when thoroughly wet and a high runoff potential. These soils consist

chiefly of silty clays that have a high shrink-swell potential, soils that have a high-water table,

soils that have a clay pan or clay layer at or near the surface, and soils that are shallow over

nearly impervious material. These soils have a very slow rate of water transmission.

4.0 GEOTECHNICAL ANALYSIS

Section III-3.2.1 of the Manual requires large development drainage plan to include a

geotechnical analysis when:

• Grading or the construction of stormwater facilities is proposed with 200 ft of slopes steeper

than 15%;

• The County deems that the proposed construction poses a potential hazard due its proximity

to a geologically hazardous area or aquifer recharge area.

These conditions do not apply to the project, and a geotechnical analysis is not included in this

drainage plan. A geotechnical report will be prepared later for the design of supporting

structures, walls, and berms to satisfy the building code requirements.

5.0 PROJECT LAYOUT – OSBL

The project has two stormwater discharge conditions:

• The natural wooded area to the west of the proposed rail facility (west of M Street)

• The refinery sewer system, which is routed to the refinery wastewater treatment facility




The primary focus of this report is the storm water routed to woodland area to the west of the

proposed rail facility. Other proposed improvements’ storm water will be routed to the refinery

sewer system. Figure 7 is the existing stormwater site plan. Figure 8 is the proposed stormwater

site plan

Referring to Figure 7 below , the area for the rail improvements is currently an open grassy field

east of K Street and north of 2nd Street. The existing truck rack portion generally drains southerly

towards existing catch basins that are connected to the refinery sewer system. The remainder of

the site generally drains westerly in an existing ditch and culvert system to an existing outfall in

the woodland area west of K Street. This area will be referred to as the rail area upland basin.

Stormwater runoff generated for the proposed facility unloading racks and storage track area will

be directed to the existing refinery sewer system.

Figures 9 and 10 show the WWHM modeled basins for the predeveloped and developed rail area

basin. The project will reduce the rail upland area basin by approximately 2.5 acres. The area

that will be routed to the refinery sewer system was not modeled for this report.

Figure 7. Existing Basin – Rail Project Area




Figure 8. Proposed Developed Site – Rail Area

Figure 9. WWHM Predeveloped Basin – Rail Project Area




Figure 10. WWHM Developed Basin – Rail Upland Area

Additional improvements are being provided for the tankage areas immediately south of the rail

area. Note that this work is within existing tank containments that are connected to the WWTP.

Runoff from these containments is monitored and released after storm events through valve

outlets to the refinery sewer system.




Figure 11. Tank Area Improvements

6.0 COMPLIANCE WITH MINIMUM REQUIREMENTS

In accordance with Whatcom County Code Section 20.80.630, this site, as an industrial area, is

considered a High Land Use Intensity for stormwater management. Therefore, Minimum

Requirements (MR) 1 through 9 from the Manual for redevelopment apply and are discussed in

the subsequent sections of this report.

• MR1: Preparation of Stormwater Site Plan

• MR2: Construction Stormwater Pollution Prevention (SWPP)

• MR3: Source Control of Pollution

• MR4: Preservation of Natural Drainage Systems and Outfalls

• MR5: Onsite Stormwater Management

• MR6: Runoff Treatment

• MR7: Flow Control

• MR8: Wetlands Protection

• MR9: Operation and Maintenance

6.1 MR1: Stormwater Site Plan

This Stormwater Site Plan is prepared in accordance with Chapter 3 of Volume I of the Manual.




6.2 MR2: Construction Stormwater Pollution Prevention Plan

The Stormwater Pollution Prevention Plan (SWPPP) is included in the construction drawings;

see list in Appendix C. This Plan provides erosion and sediment control information, locations

where Best Management Practices (BMPs) must be implemented, and requirements that the

contractor must follow throughout construction.

6.2.1 Rail Facility Improvements

At the start of and during the construction phase of the project, erosion and sediment control

measures will be implemented. The project contractor will provide their own certified erosion

and sediment control lead (CESCL) who will be monitoring the site and working with the project

coordinator and a Green Apple Renewable Fuels, LLC stormwater representative to ensure site

stormwater discharges are in accordance with requirements. The construction stormwater will be

routed to a temporary pond that will provide some initial sediment trapping. The collected storm

water from this pond will then be discharged to a dispersion piping system in the woodlands west

of M Street for vegetation filtration.

The anticipated construction sequence is as follows:

• Step 1: Install high visibility fence around wetland 25-ft buffer. Install compost berm, silt

fence, or straw wattles around the site and install construction entrances.

• Step 2: Construct the sediment pond and sump pump connecting force main to vegetation

filter distribution system.

• Step 3: Construct erosion measures around topsoil stockpile area, catch ditches, ditch to

sediment settling area, access road, etc.

• Step 4: Separate topsoil from other excavated material (approximately first 12 inches of

excavation) and haul to stockpile site.

• Step 5: Begin clearing for the sediment pond area first and then move on to the remainder of

the site. Haul topsoil to stockpile and haul remainder to project disposal site.

• Step 6: Continue constructing the remainder of the project. Consider sequencing these pad

excavations so that when one is ready, gravel can quickly be placed and limit how much soil

could be tracked around the site or beyond.

• Step 7: Cover disturbed soils with straw and hold in place. Cover the topsoil stockpile(s) with

plastic sheets and secure them for the construction duration. (BMP S429)

• Step 8: Maintain all the above measures and any others provided throughout the construction

period.

• Step 9: Remove all measures when construction is completed and implement any final

permanent measures. (See Appendix C.)

6.2.2 Refinery Area OSBL

Additional construction stormwater measures may be required for work sites within the refinery.

The tank construction sites currently drain to existing catch basins connected to the refinery

sewer system. The refinery construction sites will be drained to the refinery sewer system and

will not be discharged off site.




6.3 MR3: Source Control of Pollution – Rail Facility

The drainage Manual requires large development to provide stormwater source controls to

prevent runoff from coming into contact with pollutants. The applicable Manual BMP is S422

BMPs for Railroad Yards. S422 summarizes the applicable source control treatment as follows:

The rail rack area for loading and unloading rail cars will have concrete aprons to capture,

contain, and direct any spills around the rail cars to the existing sewer system and onsite

treatment facility. The storage track area east of K Street will be on ballast and gravel backfill

that will have perforated pipe subdrains. These subdrains will also be routed to the refinery sewer

system. Current refinery procedures for handling materials will be implemented and maintained.

The lateral tracks to the west of K Street are not considered to require source control BMPs.

These tracks will not be used for storage tracks, rail car unloading, or rail equipment

maintenance.

6.4 MR4: Preservation of Natural Drainage Systems and Outfalls – Rail Facility

The proposed drainage system design for the rail facility will continue to use the existing

drainage outfall to the west for the area upland of the storage and unloading tracks. There will be

some diversion of the existing site drainage from the existing basin to the refinery sewer system.

The project is not anticipated to cause significant adverse downstream impacts.

The figure below shows the stormwater drainage system in the vicinity of the frail facility project

site. The runoff sheet flows towards the existing ditches where it is captured, conveyed under the

rail and roadway, conveyed westerly, discharged into Wetland “E” and continues overland

draining into Georgia Strait. The ditches and culverts are currently operating sufficiently, and no

deficiencies have been reported or observed. There are no known conveyance system capacity

problems or localized flooding of downstream areas. There are no known upland erosion

impacts, and no impacts due to development are anticipated.

Figure 12. Drainage Outfall for Rail Upland Basin




6.5 MR5: Onsite Stormwater Management – Rail Facility

The drainage Manual requires that developments provide onsite conveyance facilities (ditches,

pipes, etc.) to convey without flooding or otherwise damaging existing or proposed structures for

a peak runoff rate from the 100-year 24-hr storm event. The conveyance system is still under

design development at this time. The discharge to the existing rail area outfall will be reduced

due to the reduction in the basin area. See sections for Minimum Requirement 7 (Flow Control)

and Minimum Requirement 8 (Wetlands Protection).

6.6 MR6: Runoff Treatment – Rail Facility

The drainage Manual requires large development to provide stormwater quality control for large

area improvements where applicable. As stated in Section 6.3, rail facility areas that potentially

could release pollutants will have storm water routed to the refinery sewer system. All the paved

(concrete unloading pad and modified truck loading area) developed area will be directed to the

refinery sewer system so there is no need for additional treatment BMPs. The area where rail

cars are being stored has a layer of gravel and gravel ballast about two feet thick. Runoff from

this area will percolate through the gravels to perforated lines placed to collect this water and

will be connected to the refinery sewer system.

The incoming trackage to the west of K Street was assessed using the Manual Treatment Facility

Selection Flow Chart (Figure 13). Interpretation of this flow chart indicates that flow control

BMPs will not be required for the rail upland basin area.




Figure 13. Manual Treatment Facility Selection Flow Chart – Rail Upland Basin




6.7 MR7: Flow Control – Rail Facility

The Manual requires large development peak flow rates to match or be less than the pre-

development peak flows for the 10- and 100-year events. In addition, the design is required to

match the 2-year storm event to 50% of the pre-development flow. Additionally, the area serves

to feed some downstream wetlands. Balancing and maintaining the runoff releases to the

wetlands will take priority with these project outflows. (See report section addressing Minimum

Requirement 8 – Wetlands Protection.)

The flow control analysis was conducted using the Western Washington Hydrology Model

WWHM 2012. The point of compliance (POC 1) is the stormwater discharge to the existing

culvert crossing the rail laterals. The WHMM model was used to assess the flow frequency and

flow duration. The WWHM model results are summarized below. See Appendix A for the

WWHM report.

The rail car loading/unloading and the storage track area will be directed to the refinery sewer

system. This removes approximately 2.5 acres of developed flow from the rail area upland basin.

The final rail upland basin area runoff is reduced by approximately 11% from the pre-developed

conditions as shown in Figure 14.

Figure 14. WWHM Results for Flow Frequency Analysis




6.8 MR8: Wetlands Protection – Rail Facility

In addition to MR 6 (Runoff Treatment) and MR 7 (Flow Control), the Manual also requires

additional analysis for protection of wetlands. The upland rail basin portion of the project

discharges into a downstream Category III wetland area (Wetland “E”) This area has been

preliminarily assessed for wetlands, and the project biologist is in the process of conducting

additional field work and will be preparing a critical areas report for the area (AECOM). The

proposed design is being reviewed by the project wetlands biologist (AECOM). They will

continue to review this design and offer comments when changes are proposed.

Wetlands impacted within the project area upland area will be mitigated. The mitigation plans

are not part of this report.

The Manual Appendix I-D: Guidelines for Wetlands when Managing Stormwater was applied to

the proposed stormwater system design. The guidelines are presented as a series of Guide Sheets.

These are addressed in sequence below:

6.8.1 Guide Sheet 1: Criteria that exclude wetlands from serving as a treatment or flow

control BMP/facility

These criteria specifically require that Category I wetlands, Category II wetlands, and wetlands

that provide habitat for threatened or endangered species meet the requirements of Guide Sheet

3.

6.8.2 Guide Sheet 2: Criteria for including wetlands as a treatment or flow control

BMP/facility

Category IV and Category III wetlands with a habitat score of 19 points or less can potentially be

used for stormwater treatment or flow control. Currently the project is not proposing to use the

downstream wetlands for treatment or flow control.

6.8.3 Guide Sheet 3A: General guidelines for protecting function and values of wetlands

The project plan is consistent with the requirements for protecting the functions and values of

Wetland “E” including:

• Maintain wetland buffer.

• Retain areas for native vegetation, connecting the wetland and its buffer with nearby

wetlands and other continuous areas of native vegetation.

• Avoid compaction of soil and introduction of exotic plant species.

• Do not produce general urban impacts.

• Make no modifications to the wetland inlet.

6.8.4 Guide Sheet 3B: Protecting wetlands from impacts of changes in water flows

This guide requires that increases or decreases in total flow (volume) to Category I, Category II,

and some Category III wetlands are within the following limits:

• Criterion 1: Total volume of water into a wetland during a single precipitation event should

not be more than 20% higher or lower than the per-project volumes.




• Criterion 2: Total volume of water into a wetland on a monthly basis should not be more than

15% higher or lower that the per-project volumes.

The WWHM model was used to analyze the volume variance between the pre-development

condition and the post-development condition. The model results were that the post-development

volume flowrate was reduced by 11% from the pre-development flow rate, which means the

proposed project meets the requirements of Guide Sheet 3B.

6.8.5 Guide Sheet 4: Jurisdictional planning for wetlands and stormwater management

This guideline is for local jurisdictional planning and management policies. This is not

considered to be an issue that needs to be addressed by this report. The project biologist will be

preparing a report addressing the wetlands impacted by the project.

6.9 MR9: Operations and Maintenance – Rail

Phillips 66 Ferndale Refinery (property owner) and Green Apple Renewable Fuels, LLC

(operations leaseholder) will be responsible for operating and maintaining these facilities in

order to meet County and State requirements. Refinery procedures will be in alignment with their

NPDES permit requirements. No operation and maintenance manual is provided in this submittal

package.

7.0 EASEMENTS, TRACTS, AND COVENANTS

The drainage Manual requires that easements be provided for stormwater and drainage

conveyance systems that are not located in public right-of-way. The project is within the P66

property and not accessible without a P66 personnel escort. Similar to other stormwater

management systems on site, the proposed facilities will be regularly monitored by P66’s

stormwater management personnel and maintained as required. This will all be done in

accordance with the requirements of P66’s individual NPDES stormwater permit. It is assumed

that additional easements are not required for this project.

8.0 BOND QUANTITIES WORKSHEET

Whatcom County Public Works will not require a performance bond (or other financial

guarantee) for proper construction and operation of construction site BMPs. Therefore, a bond

quantities worksheet is not required at this time.

9.0 LIST OF APPENDICES

• Appendix A: WWHM2012 Project Report: Rail Area Storm Runoff Calculations, November

12, 2019

• Appendix B: NRCS Custom Soil Resource Report for Whatcom County Area, Washington,

Plant_66, June 3, 2019

• Appendix C: SWPP Plans – Full Size

• Appendix D: Construction Plans – Full Size




10.0 REVISION LOG

Rev. Date By Description

A 11/21/19 GVW Issue for Permit

S:\Cascadia Program\108976\5 Issued Products\T-1068-OSBL Civil Development Package IFPermit Rev A\108976 Green Apple Stormwater Site Plan IFPermit Rev A.docx



REG092/P66 18030 APPENDIX A ISSUE FOR PERMIT, REVISION A ANVIL 108976 NOVEMBER 21, 2019

APPENDIX A – WWHM2012 PROJECT REPORT: RAIL AREA STORM RUNOFF CALCULATIONS

WWHM2012

PROJECT REPORT

Rail AreaStorm Runoff Calculations

Anvil CorporationGreg Van Wagner, PENovember 12, 2019

108976 REG-P66 Rail bsns RevA 11/12/2019 12:54:58 PM Page 2

General Model InformationProject Name: 108976 REG-P66 Rail bsns RevA

Site Name: REG/P66

Site Address: 3901 Unick Rd

City: Ferndale

Report Date: 11/12/2019

Gage: Blaine

Data Start: 1948/10/01

Data End: 2009/09/30

Timestep: 15 Minute

Precip Scale: 0.857

Version Date: 2019/09/13

Version: 4.2.17

POC Thresholds

Low Flow Threshold for POC1: 50 Percent of the 2 Year

High Flow Threshold for POC1: 50 Year


Landuse Basin DataPredeveloped Land Use

Basin E- 1, exst siteBypass: No

GroundWater: No

Pervious Land Use acre C, Pasture, Flat 22.93

Pervious Total 22.93

Impervious Land Use acre

Impervious Total 0

Basin Total 22.93

Element Flows To:Surface Interflow Groundwater


Mitigated Land Use

Basin P-1 restored site Bypass: No

GroundWater: No

Pervious Land Use acre C, Pasture, Flat 20.4

Pervious Total 20.4

Impervious Land Use acre

Impervious Total 0

Basin Total 20.4

Element Flows To:Surface Interflow Groundwater


Routing ElementsPredeveloped Routing


Mitigated Routing


Analysis ResultsPOC 1

+ Predeveloped x Mitigated

Predeveloped Landuse Totals for POC #1Total Pervious Area: 22.93Total Impervious Area: 0

Mitigated Landuse Totals for POC #1Total Pervious Area: 20.4Total Impervious Area: 0

Flow Frequency Method: Log Pearson Type III 17B

Flow Frequency Return Periods for Predeveloped. POC #1Return Period Flow(cfs)2 year 0.5663065 year 0.90337810 year 1.14103125 year 1.45226650 year 1.689909100 year 1.931232

Flow Frequency Return Periods for Mitigated. POC #1Return Period Flow(cfs)2 year 0.5038225 year 0.80370310 year 1.01513525 year 1.29202950 year 1.503451100 year 1.718148

Annual PeaksAnnual Peaks for Predeveloped and Mitigated. POC #1Year Predeveloped Mitigated1949 0.565 0.5031950 0.576 0.5121951 0.811 0.7221952 0.244 0.2171953 0.289 0.2571954 0.503 0.4481955 0.471 0.4191956 0.675 0.6011957 1.137 1.0121958 0.316 0.281


1959 0.393 0.3501960 0.507 0.4511961 0.436 0.3881962 0.379 0.3371963 0.461 0.4101964 1.481 1.3181965 1.977 1.7591966 1.420 1.2631967 0.772 0.6871968 0.693 0.6171969 0.412 0.3671970 0.180 0.1601971 0.716 0.6371972 0.924 0.8221973 0.569 0.5061974 0.516 0.4591975 0.427 0.3801976 0.942 0.8381977 0.452 0.4021978 0.710 0.6311979 0.517 0.4601980 0.808 0.7191981 0.431 0.3841982 0.935 0.8321983 0.541 0.4821984 2.028 1.8041985 0.803 0.7141986 1.523 1.3551987 0.567 0.5051988 0.455 0.4051989 0.504 0.4491990 0.733 0.6521991 0.518 0.4611992 0.585 0.5201993 0.515 0.4581994 0.245 0.2181995 0.544 0.4841996 0.873 0.7771997 1.012 0.9011998 0.274 0.2441999 1.157 1.0292000 0.252 0.2242001 0.120 0.1072002 0.509 0.4532003 0.137 0.1212004 0.474 0.4222005 0.627 0.5582006 0.520 0.4632007 0.627 0.5582008 0.256 0.2282009 0.614 0.546

Ranked Annual PeaksRanked Annual Peaks for Predeveloped and Mitigated. POC #1Rank Predeveloped Mitigated1 2.0281 1.80432 1.9772 1.75903 1.5229 1.3548


4 1.4810 1.31765 1.4197 1.26316 1.1571 1.02947 1.1371 1.01168 1.0124 0.90079 0.9423 0.838410 0.9355 0.832311 0.9240 0.822112 0.8728 0.776513 0.8111 0.721614 0.8084 0.719215 0.8030 0.714416 0.7719 0.686717 0.7331 0.652218 0.7162 0.637219 0.7097 0.631420 0.6933 0.616821 0.6754 0.600922 0.6275 0.558323 0.6274 0.558224 0.6135 0.545825 0.5846 0.520126 0.5755 0.512027 0.5691 0.506328 0.5672 0.504629 0.5651 0.502730 0.5438 0.483831 0.5414 0.481732 0.5204 0.463033 0.5182 0.461034 0.5168 0.459835 0.5163 0.459336 0.5152 0.458337 0.5094 0.453238 0.5069 0.450939 0.5044 0.448840 0.5031 0.447641 0.4745 0.422142 0.4710 0.419143 0.4606 0.409844 0.4547 0.404645 0.4523 0.402446 0.4362 0.388047 0.4313 0.383748 0.4266 0.379649 0.4122 0.366750 0.3930 0.349651 0.3787 0.337052 0.3158 0.281053 0.2885 0.256754 0.2737 0.243555 0.2560 0.227856 0.2517 0.223957 0.2455 0.218458 0.2443 0.217359 0.1802 0.160360 0.1365 0.121561 0.1197 0.1065


Duration FlowsThe Facility PASSED

Flow(cfs) Predev Mit Percentage Pass/Fail0.2832 19109 14442 75 Pass0.2974 17030 12853 75 Pass0.3116 15269 11541 75 Pass0.3258 13706 10324 75 Pass0.3400 12408 9315 75 Pass0.3542 11178 8288 74 Pass0.3684 10134 7418 73 Pass0.3826 9251 6673 72 Pass0.3968 8406 5935 70 Pass0.4110 7557 5272 69 Pass0.4252 6881 4727 68 Pass0.4395 6231 4250 68 Pass0.4537 5610 3792 67 Pass0.4679 5067 3414 67 Pass0.4821 4592 3071 66 Pass0.4963 4177 2753 65 Pass0.5105 3767 2436 64 Pass0.5247 3429 2162 63 Pass0.5389 3153 1924 61 Pass0.5531 2847 1712 60 Pass0.5673 2556 1526 59 Pass0.5816 2297 1374 59 Pass0.5958 2071 1236 59 Pass0.6100 1867 1111 59 Pass0.6242 1683 992 58 Pass0.6384 1517 895 58 Pass0.6526 1388 802 57 Pass0.6668 1257 711 56 Pass0.6810 1132 630 55 Pass0.6952 1039 537 51 Pass0.7094 942 437 46 Pass0.7237 859 360 41 Pass0.7379 774 299 38 Pass0.7521 701 261 37 Pass0.7663 627 240 38 Pass0.7805 546 217 39 Pass0.7947 454 196 43 Pass0.8089 377 165 43 Pass0.8231 315 141 44 Pass0.8373 278 112 40 Pass0.8515 253 99 39 Pass0.8657 235 89 37 Pass0.8800 216 77 35 Pass0.8942 191 65 34 Pass0.9084 167 51 30 Pass0.9226 143 40 27 Pass0.9368 119 30 25 Pass0.9510 104 23 22 Pass0.9652 94 18 19 Pass0.9794 83 17 20 Pass0.9936 73 17 23 Pass1.0078 65 16 24 Pass1.0221 50 15 30 Pass


1.0363 40 14 35 Pass1.0505 32 14 43 Pass1.0647 25 13 52 Pass1.0789 21 13 61 Pass1.0931 18 13 72 Pass1.1073 17 13 76 Pass1.1215 17 13 76 Pass1.1357 16 11 68 Pass1.1499 15 11 73 Pass1.1642 14 11 78 Pass1.1784 14 11 78 Pass1.1926 14 10 71 Pass1.2068 13 10 76 Pass1.2210 13 10 76 Pass1.2352 13 10 76 Pass1.2494 13 9 69 Pass1.2636 13 7 53 Pass1.2778 11 6 54 Pass1.2920 11 6 54 Pass1.3062 11 6 54 Pass1.3205 11 4 36 Pass1.3347 10 4 40 Pass1.3489 10 4 40 Pass1.3631 10 3 30 Pass1.3773 10 2 20 Pass1.3915 10 2 20 Pass1.4057 9 2 22 Pass1.4199 7 2 28 Pass1.4341 6 2 33 Pass1.4483 6 2 33 Pass1.4626 6 2 33 Pass1.4768 6 2 33 Pass1.4910 4 2 50 Pass1.5052 4 2 50 Pass1.5194 4 2 50 Pass1.5336 3 2 66 Pass1.5478 2 2 100 Pass1.5620 2 2 100 Pass1.5762 2 2 100 Pass1.5904 2 2 100 Pass1.6047 2 2 100 Pass1.6189 2 2 100 Pass1.6331 2 2 100 Pass1.6473 2 2 100 Pass1.6615 2 2 100 Pass1.6757 2 2 100 Pass1.6899 2 2 100 Pass


Water QualityWater Quality BMP Flow and Volume for POC #1On-line facility volume: 0 acre-feetOn-line facility target flow: 0 cfs.Adjusted for 15 min: 0 cfs.Off-line facility target flow: 0 cfs.Adjusted for 15 min: 0 cfs.


Wetland Input Volumes

- Percent - Predeveloped - Mitigated

Wetlands Input Volume for POC 1Average Annual Volume (acft) Series 1: 501 POC 1 Predeveloped flowSeries 2: 801 POC 1 Mitigated flowMonth Series 1 Series 2 Percent Pass/FailJan 3.1740 2.8238 89.0 PassFeb 2.5343 2.2547 89.0 PassMar 1.6564 1.4736 89.0 PassApr 0.8223 0.7316 89.0 PassMay 0.2440 0.2171 89.0 PassJun 0.0988 0.0879 89.0 PassJul 0.0383 0.0341 89.0 PassAug 0.0113 0.0101 89.0 PassSep 0.0097 0.0086 89.0 PassOct 0.2169 0.1930 89.0 PassNov 1.7129 1.5240 89.0 PassDec 3.2150 2.8603 89.0 Pass

Day Predevel Mitigated Percent Pass/FailJan1 0.1098 0.0976 89.0 Pass2 0.1101 0.0979 89.0 Pass3 0.1113 0.0991 89.0 Pass4 0.1054 0.0937 89.0 Pass5 0.0962 0.0856 89.0 Pass6 0.0920 0.0819 89.0 Pass7 0.1016 0.0904 89.0 Pass8 0.0836 0.0743 89.0 Pass9 0.0934 0.0831 89.0 Pass10 0.0858 0.0763 89.0 Pass11 0.0963 0.0856 89.0 Pass12 0.0897 0.0798 89.0 Pass13 0.1043 0.0928 89.0 Pass14 0.1125 0.1001 89.0 Pass


15 0.1111 0.0989 89.0 Pass16 0.1128 0.1003 89.0 Pass17 0.1170 0.1041 89.0 Pass18 0.1160 0.1032 89.0 Pass19 0.1030 0.0916 89.0 Pass20 0.0796 0.0708 89.0 Pass21 0.0795 0.0708 89.0 Pass22 0.1251 0.1113 89.0 Pass23 0.1378 0.1226 89.0 Pass24 0.1243 0.1106 89.0 Pass25 0.1199 0.1067 89.0 Pass26 0.0954 0.0849 89.0 Pass27 0.0750 0.0667 89.0 Pass28 0.0767 0.0682 89.0 Pass29 0.0908 0.0808 89.0 Pass30 0.1024 0.0911 89.0 Pass31 0.0878 0.0781 89.0 PassFeb1 0.0729 0.0648 89.0 Pass2 0.0719 0.0639 89.0 Pass3 0.0807 0.0718 89.0 Pass4 0.0718 0.0639 89.0 Pass5 0.0706 0.0629 89.0 Pass6 0.0741 0.0659 89.0 Pass7 0.0679 0.0604 89.0 Pass8 0.0756 0.0673 89.0 Pass9 0.0946 0.0841 89.0 Pass10 0.0838 0.0745 89.0 Pass11 0.0900 0.0801 89.0 Pass12 0.0900 0.0800 89.0 Pass13 0.0930 0.0827 89.0 Pass14 0.1106 0.0984 89.0 Pass15 0.1289 0.1146 89.0 Pass16 0.1124 0.1000 89.0 Pass17 0.1070 0.0952 89.0 Pass18 0.1130 0.1006 89.0 Pass19 0.1016 0.0904 89.0 Pass20 0.1015 0.0903 89.0 Pass21 0.1000 0.0890 89.0 Pass22 0.0865 0.0770 89.0 Pass23 0.0971 0.0864 89.0 Pass24 0.0898 0.0799 89.0 Pass25 0.0784 0.0698 89.0 Pass26 0.0866 0.0770 89.0 Pass27 0.0721 0.0642 89.0 Pass28 0.0933 0.0830 89.0 Pass29 0.0565 0.0503 89.0 PassMar1 0.0449 0.0400 89.0 Pass2 0.0468 0.0416 89.0 Pass3 0.0556 0.0495 89.0 Pass4 0.0798 0.0710 89.0 Pass5 0.0656 0.0584 89.0 Pass6 0.0514 0.0457 89.0 Pass7 0.0521 0.0463 89.0 Pass8 0.0641 0.0571 89.0 Pass9 0.0593 0.0527 89.0 Pass10 0.0634 0.0564 89.0 Pass11 0.0754 0.0671 89.0 Pass12 0.0584 0.0520 89.0 Pass


13 0.0487 0.0433 89.0 Pass14 0.0453 0.0403 89.0 Pass15 0.0366 0.0325 89.0 Pass16 0.0422 0.0376 89.0 Pass17 0.0564 0.0501 89.0 Pass18 0.0685 0.0609 89.0 Pass19 0.0659 0.0586 89.0 Pass20 0.0559 0.0498 89.0 Pass21 0.0482 0.0429 89.0 Pass22 0.0464 0.0412 89.0 Pass23 0.0435 0.0387 89.0 Pass24 0.0435 0.0387 89.0 Pass25 0.0475 0.0423 89.0 Pass26 0.0435 0.0387 89.0 Pass27 0.0424 0.0377 89.0 Pass28 0.0522 0.0464 89.0 Pass29 0.0467 0.0415 89.0 Pass30 0.0500 0.0445 89.0 Pass31 0.0451 0.0401 89.0 PassApr1 0.0424 0.0377 89.0 Pass2 0.0315 0.0280 89.0 Pass3 0.0339 0.0301 89.0 Pass4 0.0462 0.0411 89.0 Pass5 0.0508 0.0452 89.0 Pass6 0.0371 0.0330 89.0 Pass7 0.0324 0.0288 89.0 Pass8 0.0323 0.0288 89.0 Pass9 0.0264 0.0235 89.0 Pass10 0.0254 0.0226 89.0 Pass11 0.0254 0.0226 89.0 Pass12 0.0189 0.0168 89.0 Pass13 0.0262 0.0233 89.0 Pass14 0.0252 0.0224 89.0 Pass15 0.0269 0.0240 89.0 Pass16 0.0203 0.0181 89.0 Pass17 0.0180 0.0161 89.0 Pass18 0.0165 0.0147 89.0 Pass19 0.0336 0.0299 89.0 Pass20 0.0200 0.0178 89.0 Pass21 0.0181 0.0161 89.0 Pass22 0.0269 0.0239 89.0 Pass23 0.0179 0.0159 89.0 Pass24 0.0176 0.0157 89.0 Pass25 0.0146 0.0130 89.0 Pass26 0.0221 0.0196 89.0 Pass27 0.0221 0.0197 89.0 Pass28 0.0281 0.0250 89.0 Pass29 0.0204 0.0181 89.0 Pass30 0.0163 0.0145 89.0 PassMay1 0.0143 0.0128 89.0 Pass2 0.0130 0.0115 89.0 Pass3 0.0110 0.0098 89.0 Pass4 0.0095 0.0084 89.0 Pass5 0.0056 0.0050 89.0 Pass6 0.0042 0.0038 89.0 Pass7 0.0035 0.0031 89.0 Pass8 0.0046 0.0041 89.0 Pass9 0.0045 0.0040 89.0 Pass


10 0.0048 0.0043 89.0 Pass11 0.0038 0.0034 89.0 Pass12 0.0061 0.0054 89.0 Pass13 0.0119 0.0106 89.0 Pass14 0.0082 0.0073 89.0 Pass15 0.0126 0.0112 89.0 Pass16 0.0094 0.0083 89.0 Pass17 0.0064 0.0057 89.0 Pass18 0.0086 0.0077 89.0 Pass19 0.0146 0.0130 89.0 Pass20 0.0083 0.0074 89.0 Pass21 0.0055 0.0049 89.0 Pass22 0.0051 0.0046 89.0 Pass23 0.0033 0.0030 89.0 Pass24 0.0045 0.0040 89.0 Pass25 0.0078 0.0069 89.0 Pass26 0.0092 0.0082 89.0 Pass27 0.0100 0.0089 89.0 Pass28 0.0069 0.0061 89.0 Pass29 0.0059 0.0052 89.0 Pass30 0.0045 0.0040 89.0 Pass31 0.0031 0.0028 89.0 PassJun1 0.0026 0.0023 89.0 Pass2 0.0023 0.0021 89.0 Pass3 0.0024 0.0021 89.0 Pass4 0.0020 0.0018 89.0 Pass5 0.0034 0.0031 89.0 Pass6 0.0044 0.0040 89.0 Pass7 0.0032 0.0029 89.0 Pass8 0.0031 0.0027 89.0 Pass9 0.0055 0.0049 89.0 Pass10 0.0041 0.0036 89.0 Pass11 0.0051 0.0045 89.0 Pass12 0.0114 0.0101 89.0 Pass13 0.0067 0.0060 89.0 Pass14 0.0038 0.0034 89.0 Pass15 0.0025 0.0022 89.0 Pass16 0.0016 0.0014 89.0 Pass17 0.0040 0.0035 89.0 Pass18 0.0054 0.0048 89.0 Pass19 0.0034 0.0030 89.0 Pass20 0.0020 0.0017 89.0 Pass21 0.0014 0.0013 89.0 Pass22 0.0015 0.0013 89.0 Pass23 0.0015 0.0013 89.0 Pass24 0.0016 0.0014 89.0 Pass25 0.0009 0.0008 89.0 Pass26 0.0006 0.0005 89.0 Pass27 0.0006 0.0005 89.0 Pass28 0.0054 0.0048 89.0 Pass29 0.0033 0.0029 89.0 Pass30 0.0019 0.0017 89.0 PassJul1 0.0011 0.0010 89.0 Pass2 0.0008 0.0008 89.0 Pass3 0.0005 0.0004 89.0 Pass4 0.0007 0.0006 89.0 Pass5 0.0028 0.0025 89.0 Pass6 0.0017 0.0015 89.0 Pass


7 0.0052 0.0046 89.0 Pass8 0.0035 0.0031 89.0 Pass9 0.0019 0.0017 89.0 Pass10 0.0013 0.0012 89.0 Pass11 0.0039 0.0034 89.0 Pass12 0.0043 0.0038 89.0 Pass13 0.0026 0.0023 89.0 Pass14 0.0017 0.0015 89.0 Pass15 0.0009 0.0008 89.0 Pass16 0.0006 0.0006 89.0 Pass17 0.0005 0.0004 89.0 Pass18 0.0005 0.0004 89.0 Pass19 0.0003 0.0003 89.0 Pass20 0.0002 0.0002 89.0 Pass21 0.0002 0.0002 89.0 Pass22 0.0002 0.0001 89.0 Pass23 0.0001 0.0001 89.0 Pass24 0.0001 0.0001 89.0 Pass25 0.0003 0.0002 89.0 Pass26 0.0002 0.0001 89.0 Pass27 0.0002 0.0002 89.0 Pass28 0.0001 0.0001 89.0 Pass29 0.0001 0.0001 89.0 Pass30 0.0000 0.0000 89.0 Pass31 0.0000 0.0000 89.0 PassAug1 0.0001 0.0001 89.0 Pass2 0.0001 0.0001 89.0 Pass3 0.0001 0.0001 89.0 Pass4 0.0001 0.0001 89.0 Pass5 0.0000 0.0000 89.0 Pass6 0.0000 0.0000 89.0 Pass7 0.0001 0.0000 89.0 Pass8 0.0001 0.0001 89.0 Pass9 0.0001 0.0001 89.0 Pass10 0.0001 0.0001 89.0 Pass11 0.0001 0.0001 89.0 Pass12 0.0001 0.0001 89.0 Pass13 0.0001 0.0001 89.0 Pass14 0.0015 0.0013 89.0 Pass15 0.0014 0.0013 89.0 Pass16 0.0008 0.0007 89.0 Pass17 0.0006 0.0005 89.0 Pass18 0.0004 0.0003 89.0 Pass19 0.0003 0.0003 89.0 Pass20 0.0007 0.0006 89.0 Pass21 0.0005 0.0005 89.0 Pass22 0.0004 0.0003 89.0 Pass23 0.0004 0.0004 89.0 Pass24 0.0003 0.0003 89.0 Pass25 0.0009 0.0008 89.0 Pass26 0.0008 0.0007 89.0 Pass27 0.0004 0.0004 89.0 Pass28 0.0003 0.0003 89.0 Pass29 0.0003 0.0003 89.0 Pass30 0.0003 0.0002 89.0 Pass31 0.0003 0.0003 89.0 PassSep1 0.0003 0.0002 89.0 Pass2 0.0002 0.0001 89.0 Pass


3 0.0001 0.0001 89.0 Pass4 0.0002 0.0002 89.0 Pass5 0.0001 0.0001 89.0 Pass6 0.0001 0.0001 89.0 Pass7 0.0001 0.0001 89.0 Pass8 0.0002 0.0001 89.0 Pass9 0.0001 0.0001 89.0 Pass10 0.0001 0.0001 89.0 Pass11 0.0001 0.0001 89.0 Pass12 0.0001 0.0001 89.0 Pass13 0.0002 0.0002 89.0 Pass14 0.0002 0.0002 89.0 Pass15 0.0002 0.0002 89.0 Pass16 0.0005 0.0004 89.0 Pass17 0.0003 0.0002 89.0 Pass18 0.0004 0.0004 89.0 Pass19 0.0003 0.0003 89.0 Pass20 0.0005 0.0004 89.0 Pass21 0.0007 0.0007 89.0 Pass22 0.0007 0.0006 89.0 Pass23 0.0006 0.0005 89.0 Pass24 0.0004 0.0003 89.0 Pass25 0.0003 0.0002 89.0 Pass26 0.0002 0.0001 89.0 Pass27 0.0001 0.0001 89.0 Pass28 0.0002 0.0002 89.0 Pass29 0.0020 0.0017 89.0 Pass30 0.0014 0.0012 89.0 PassOct1 0.0014 0.0012 89.0 Pass2 0.0019 0.0017 89.0 Pass3 0.0013 0.0012 89.0 Pass4 0.0010 0.0009 89.0 Pass5 0.0018 0.0016 89.0 Pass6 0.0030 0.0027 89.0 Pass7 0.0041 0.0037 89.0 Pass8 0.0070 0.0062 89.0 Pass9 0.0040 0.0035 89.0 Pass10 0.0023 0.0020 89.0 Pass11 0.0013 0.0012 89.0 Pass12 0.0014 0.0013 89.0 Pass13 0.0014 0.0013 89.0 Pass14 0.0012 0.0010 89.0 Pass15 0.0034 0.0030 89.0 Pass16 0.0090 0.0080 89.0 Pass17 0.0081 0.0072 89.0 Pass18 0.0070 0.0062 89.0 Pass19 0.0093 0.0083 89.0 Pass20 0.0104 0.0092 89.0 Pass21 0.0092 0.0082 89.0 Pass22 0.0104 0.0093 89.0 Pass23 0.0089 0.0079 89.0 Pass24 0.0084 0.0075 89.0 Pass25 0.0071 0.0063 89.0 Pass26 0.0143 0.0127 89.0 Pass27 0.0157 0.0139 89.0 Pass28 0.0176 0.0156 89.0 Pass29 0.0215 0.0191 89.0 Pass30 0.0223 0.0198 89.0 Pass


31 0.0327 0.0291 89.0 PassNov1 0.0308 0.0274 89.0 Pass2 0.0627 0.0557 89.0 Pass3 0.0705 0.0627 89.0 Pass4 0.0457 0.0406 89.0 Pass5 0.0361 0.0321 89.0 Pass6 0.0335 0.0298 89.0 Pass7 0.0347 0.0308 89.0 Pass8 0.0332 0.0295 89.0 Pass9 0.0415 0.0369 89.0 Pass10 0.0453 0.0403 89.0 Pass11 0.0401 0.0357 89.0 Pass12 0.0354 0.0315 89.0 Pass13 0.0404 0.0359 89.0 Pass14 0.0426 0.0379 89.0 Pass15 0.0396 0.0353 89.0 Pass16 0.0379 0.0338 89.0 Pass17 0.0457 0.0407 89.0 Pass18 0.0580 0.0516 89.0 Pass19 0.0591 0.0526 89.0 Pass20 0.0513 0.0456 89.0 Pass21 0.0620 0.0552 89.0 Pass22 0.0830 0.0738 89.0 Pass23 0.0931 0.0828 89.0 Pass24 0.1081 0.0961 89.0 Pass25 0.0936 0.0833 89.0 Pass26 0.0881 0.0784 89.0 Pass27 0.0939 0.0836 89.0 Pass28 0.0854 0.0760 89.0 Pass29 0.0893 0.0794 89.0 Pass30 0.0942 0.0838 89.0 PassDec1 0.1017 0.0905 89.0 Pass2 0.0964 0.0858 89.0 Pass3 0.0909 0.0809 89.0 Pass4 0.0757 0.0673 89.0 Pass5 0.0858 0.0763 89.0 Pass6 0.0751 0.0668 89.0 Pass7 0.0994 0.0884 89.0 Pass8 0.1200 0.1068 89.0 Pass9 0.1136 0.1011 89.0 Pass10 0.1000 0.0890 89.0 Pass11 0.0881 0.0784 89.0 Pass12 0.0937 0.0833 89.0 Pass13 0.1022 0.0909 89.0 Pass14 0.1159 0.1031 89.0 Pass15 0.1005 0.0894 89.0 Pass16 0.1147 0.1020 89.0 Pass17 0.0971 0.0864 89.0 Pass18 0.0975 0.0868 89.0 Pass19 0.1076 0.0958 89.0 Pass20 0.0936 0.0833 89.0 Pass21 0.0935 0.0832 89.0 Pass22 0.1016 0.0904 89.0 Pass23 0.1182 0.1052 89.0 Pass24 0.1127 0.1003 89.0 Pass25 0.1251 0.1113 89.0 Pass26 0.1057 0.0940 89.0 Pass27 0.0930 0.0828 89.0 Pass


28 0.1208 0.1075 89.0 Pass29 0.1499 0.1333 89.0 Pass30 0.1309 0.1165 89.0 Pass31 0.1160 0.1032 89.0 Pass


LID Report


POC 2POC #2 was not reported because POC must exist in both scenarios and both scenarios must have been run.


POC 3POC #3 was not reported because POC must exist in both scenarios and both scenarios must have been run.


Model Default Modifications

Total of 0 changes have been made.

PERLND Changes No PERLND changes have been made.

IMPLND ChangesNo IMPLND changes have been made.


AppendixPredeveloped Schematic


Mitigated Schematic


Predeveloped UCI FileRUN

GLOBAL WWHM4 model simulation START 1948 10 01 END 2009 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1END GLOBAL

FILES<File> <Un#> <-----------File Name------------------------------>***<-ID-> ***WDM 26 108976 REG-P66 Rail bsns RevA.wdmMESSU 25 Pre108976 REG-P66 Rail bsns RevA.MES 27 Pre108976 REG-P66 Rail bsns RevA.L61 28 Pre108976 REG-P66 Rail bsns RevA.L62 30 POC108976 REG-P66 Rail bsns RevA1.datEND FILES

OPN SEQUENCE INGRP INDELT 00:15 PERLND 13 COPY 501 DISPLY 1 END INGRPEND OPN SEQUENCEDISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Basin E- 1, exst site MAX 1 2 30 9 END DISPLY-INFO1END DISPLYCOPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIESEND COPYGENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARMEND GENERPERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 13 C, Pasture, Flat 1 1 1 1 27 0 END GEN-INFO *** Section PWATER***

ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 13 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY

PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 13 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO


PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 13 0 0 0 0 0 0 0 0 0 0 0 END PWAT-PARM1

PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 13 0 4.5 0.06 400 0.05 0.5 0.996 END PWAT-PARM2

PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 13 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 13 0.15 0.4 0.3 6 0.5 0.4 END PWAT-PARM4

PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 13 0 0 0 0 2.5 1 0 END PWAT-STATE1

END PERLND

IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** END GEN-INFO *** Section IWATER***

ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** END ACTIVITY

PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* END PRINT-INFO

IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** END IWAT-PARM1

IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC END IWAT-PARM2

IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN END IWAT-PARM3

IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATE1


END IMPLND

SCHEMATIC<-Source-> <--Area--> <-Target-> MBLK ***<Name> # <-factor-> <Name> # Tbl# ***Basin E- 1, exst site***PERLND 13 22.93 COPY 501 12PERLND 13 22.93 COPY 501 13

******Routing******END SCHEMATIC

NETWORK<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1

<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***END NETWORK

RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** END GEN-INFO *** Section RCHRES***

ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** END ACTIVITY

PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* END PRINT-INFO

HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARM1

HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> END HYDR-INITEND RCHRES

SPEC-ACTIONSEND SPEC-ACTIONSFTABLESEND FTABLES

EXT SOURCES<-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***<Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # ***WDM 2 PREC ENGL 0.857 PERLND 1 999 EXTNL PRECWDM 2 PREC ENGL 0.857 IMPLND 1 999 EXTNL PREC


WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINPWDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP

END EXT SOURCES

EXT TARGETS<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd ***<Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg***COPY 501 OUTPUT MEAN 1 1 48.4 WDM 501 FLOW ENGL REPLEND EXT TARGETS

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MASS-LINK 13PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13

END MASS-LINK

END RUN


Mitigated UCI FileRUN

GLOBAL WWHM4 model simulation START 1948 10 01 END 2009 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1END GLOBAL

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OPN SEQUENCE INGRP INDELT 00:15 PERLND 13 COPY 501 DISPLY 1 END INGRPEND OPN SEQUENCEDISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Basin P-1 restored site MAX 1 2 30 9 END DISPLY-INFO1END DISPLYCOPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIESEND COPYGENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARMEND GENERPERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 13 C, Pasture, Flat 1 1 1 1 27 0 END GEN-INFO *** Section PWATER***

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END PERLND

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ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** END ACTIVITY

PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* END PRINT-INFO

IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** END IWAT-PARM1

IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC END IWAT-PARM2

IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN END IWAT-PARM3

IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATE1


END IMPLND

SCHEMATIC<-Source-> <--Area--> <-Target-> MBLK ***<Name> # <-factor-> <Name> # Tbl# ***Basin P-1 restored site ***PERLND 13 20.4 COPY 501 12PERLND 13 20.4 COPY 501 13

******Routing******END SCHEMATIC

NETWORK<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1

<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***END NETWORK

RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** END GEN-INFO *** Section RCHRES***

ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** END ACTIVITY

PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* END PRINT-INFO

HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARM1

HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> END HYDR-INITEND RCHRES

SPEC-ACTIONSEND SPEC-ACTIONSFTABLESEND FTABLES

EXT SOURCES<-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***<Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # ***WDM 2 PREC ENGL 0.857 PERLND 1 999 EXTNL PRECWDM 2 PREC ENGL 0.857 IMPLND 1 999 EXTNL PREC


WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINPWDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP

END EXT SOURCES

EXT TARGETS<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd ***<Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg***COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPLCOPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPLEND EXT TARGETS

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MASS-LINK 13PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13

END MASS-LINK

END RUN


Predeveloped HSPF Message File


Mitigated HSPF Message File


DisclaimerLegal NoticeThis program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright © by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved.

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REG092/P66 18030 APPENDIX B ISSUE FOR PERMIT, REVISION A ANVIL 108976 NOVEMBER 21, 2019

APPENDIX B – NRCS CUSTOM SOIL RESOURCE REPORT FOR WHATCOM COUNTY AREA, WASHINGTON, PLANT_66

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 Resource Report forWhatcom County Area, WashingtonPlant_P66

NaturalResourcesConservationService

June 3, 2019

PrefaceSoil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment.

Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations.

Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/?cid=nrcs142p2_053951).

Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations.

The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey.

Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information.

The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require

2

http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/health/

http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/health/

https://offices.sc.egov.usda.gov/locator/app?agency=nrcs

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/?cid=nrcs142p2_053951

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/?cid=nrcs142p2_053951

alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer.

3

ContentsPreface.................................................................................................................... 2How Soil Surveys Are Made..................................................................................5Soil Map.................................................................................................................. 8

Soil Map................................................................................................................9Legend................................................................................................................10Map Unit Legend................................................................................................ 11Map Unit Descriptions.........................................................................................11

Whatcom County Area, Washington...............................................................1312—Birchbay silt loam, 0 to 3 percent slopes............................................. 1313—Birchbay silt loam, 3 to 8 percent slopes............................................. 1414—Birchbay silt loam, 8 to 15 percent slopes........................................... 1645—Edmonds-Woodlyn loams, 0 to 2 percent slopes................................ 1779—Kickerville silt loam, 0 to 3 percent slopes........................................... 1980—Kickerville silt loam, 3 to 8 percent slopes........................................... 20171—Urban land......................................................................................... 22184—Whitehorn silt loam, 0 to 2 percent slopes.........................................23193—Water................................................................................................. 24

References............................................................................................................25

4

How Soil Surveys Are MadeSoil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity.

Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA.

The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape.

Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries.

Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil

5

scientists classified and named the soils in the survey area, they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research.

The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas.

Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil-landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape.

Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties.

While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil.

Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date.

After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and

Custom Soil Resource Report

6

identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately.


7

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

8

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Custom Soil Resource ReportSoil Map

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520900 521100 521300 521500 521700 521900 522100 522300 522500 522700 522900 523100 523300 523500 523700 523900 524100

520900 521100 521300 521500 521700 521900 522100 522300 522500 522700 522900 523100 523300 523500 523700 523900 524100

48° 50' 9'' N12

2° 4

2' 5

5'' W

48° 50' 9'' N

122°

40'

15'' W

48° 49' 11'' N

122°

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55'' W

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15'' W

N

Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS840 400 800 1600 2400

Feet0 100 200 400 600

MetersMap Scale: 1:8,750 if printed on B landscape (17" x 11") sheet.

Soil Map may not be valid at this scale.

MAP LEGEND MAP INFORMATION

Area of Interest (AOI)Area of Interest (AOI)

SoilsSoil Map Unit Polygons

Soil Map Unit Lines

Soil Map Unit Points

Special Point FeaturesBlowout

Borrow Pit

Clay Spot

Closed Depression

Gravel Pit

Gravelly Spot

Landfill

Lava Flow

Marsh or swamp

Mine or Quarry

Miscellaneous Water

Perennial Water

Rock Outcrop

Saline Spot

Sandy Spot

Severely Eroded Spot

Sinkhole

Slide or Slip

Sodic Spot

Spoil Area

Stony Spot

Very Stony Spot

Wet Spot

Other

Special Line Features

Water FeaturesStreams and Canals

TransportationRails

Interstate Highways

US Routes

Major Roads

Local Roads

BackgroundAerial Photography

The soil surveys that comprise your AOI were mapped at 1:24,000.

Warning: Soil Map may not be valid at this scale.

Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale.

Please rely on the bar scale on each map sheet for map measurements.

Source of Map: Natural Resources Conservation ServiceWeb Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857)

Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required.

This product is generated from the USDA-NRCS certified data as of the version date(s) listed below.

Soil Survey Area: Whatcom County Area, WashingtonSurvey Area Data: Version 18, Sep 10, 2018

Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Date(s) aerial images were photographed: Jul 9, 2010—Aug 28, 2011

The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.


10

Map Unit Legend

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

12 Birchbay silt loam, 0 to 3 percent slopes

160.2 22.8%


15.5 2.2%


0.1 0.0%

45 Edmonds-Woodlyn loams, 0 to 2 percent slopes

16.4 2.3%

79 Kickerville silt loam, 0 to 3 percent slopes

24.9 3.5%

80 Kickerville silt loam, 3 to 8 percent slopes

7.9 1.1%

171 Urban land 253.7 36.1%

184 Whitehorn silt loam, 0 to 2 percent slopes

212.7 30.3%

193 Water 11.3 1.6%

Totals for Area of Interest 702.8 100.0%

Map Unit DescriptionsThe map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with 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 more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed 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 without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components 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 the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas


11

are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape.

The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas.

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

Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons 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 the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt 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 intricate pattern 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 similar in 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 or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an example.

An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up 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 soil material and support little or no vegetation. Rock outcrop is an example.


12

Whatcom County Area, Washington

12—Birchbay silt loam, 0 to 3 percent slopes

Map Unit SettingNational map unit symbol: 2j19Elevation: 50 to 350 feetMean annual precipitation: 30 to 40 inchesMean annual air temperature: 50 degrees FFrost-free period: 180 daysFarmland classification: All areas are prime farmland

Map Unit CompositionBirchbay and similar soils: 80 percentMinor components: 20 percentEstimates are based on observations, descriptions, and transects of the mapunit.

Description of Birchbay

SettingLandform: HillsParent material: Loess and volcanic ash over glaciomarine and glaciofluvial

deposits

Typical profileH1 - 0 to 8 inches: ashy silt loamH2 - 8 to 24 inches: gravelly ashy silt loamH3 - 24 to 42 inches: very gravelly sandH4 - 42 to 60 inches: loam

Properties and qualitiesSlope: 0 to 3 percentDepth to restrictive feature: More than 80 inchesNatural drainage class: Moderately well drainedCapacity of the most limiting layer to transmit water (Ksat): Moderately low to

moderately high (0.06 to 0.20 in/hr)Depth to water table: About 24 to 48 inchesFrequency of flooding: NoneFrequency of ponding: NoneAvailable water storage in profile: High (about 10.7 inches)

Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 3wHydrologic Soil Group: CForage suitability group: Seasonally Wet Soils (G002XN202WA)Hydric soil rating: No

Minor Components

KickervillePercent of map unit: 5 percentHydric soil rating: No

Clipper, undrainedPercent of map unit: 4 percent


13

Landform: TerracesHydric soil rating: Yes

Hale, undrainedPercent of map unit: 4 percentLandform: TerracesHydric soil rating: Yes

TrompPercent of map unit: 3 percentHydric soil rating: No

Whitehorn, undrainedPercent of map unit: 2 percentLandform: DepressionsHydric soil rating: Yes

Labounty, undrainedPercent of map unit: 2 percentLandform: DepressionsHydric soil rating: Yes


Map Unit SettingNational map unit symbol: 2j1nElevation: 50 to 350 feetMean annual precipitation: 30 to 40 inchesMean annual air temperature: 50 degrees FFrost-free period: 180 daysFarmland classification: Farmland of statewide importance




deposits


Properties and qualitiesSlope: 3 to 8 percent


14

Depth to restrictive feature: More than 80 inchesNatural drainage class: Moderately well drainedCapacity of the most limiting layer to transmit water (Ksat): Moderately low to


Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 3wHydrologic Soil Group: CForage suitability group: Seasonally Wet Soils (G002XN202WA)Hydric soil rating: No

Minor Components

Clipper, undrainedPercent of map unit: 4 percentLandform: TerracesHydric soil rating: Yes






EverettPercent of map unit: 1 percentHydric soil rating: No


15


Map Unit SettingNational map unit symbol: 2j20Elevation: 50 to 350 feetMean annual precipitation: 30 to 40 inchesMean annual air temperature: 50 degrees FFrost-free period: 180 daysFarmland classification: Farmland of statewide importance




deposits


Properties and qualitiesSlope: 8 to 15 percentDepth to restrictive feature: More than 80 inchesNatural drainage class: Moderately well drainedCapacity of the most limiting layer to transmit water (Ksat): Moderately low to


Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 3eHydrologic Soil Group: CForage suitability group: Soils with Moderate Limitations (G002XN602WA)Hydric soil rating: No

Minor Components

EverettPercent of map unit: 5 percent


16

Hydric soil rating: No




45—Edmonds-Woodlyn loams, 0 to 2 percent slopes

Map Unit SettingNational map unit symbol: 2j4tElevation: 50 to 300 feetMean annual precipitation: 35 to 55 inchesMean annual air temperature: 48 to 52 degrees FFrost-free period: 150 to 190 daysFarmland classification: Not prime farmland

Map Unit CompositionEdmonds and similar soils: 60 percentWoodlyn, drained, and similar soils: 25 percentMinor components: 15 percentEstimates are based on observations, descriptions, and transects of the mapunit.

Description of Edmonds

SettingLandform: TerracesParent material: Volcanic ash and loess over glacial outwash

Typical profileH1 - 0 to 11 inches: ashy loamH2 - 11 to 18 inches: ashy loamH3 - 18 to 37 inches: sandH4 - 37 to 60 inches: sand

Properties and qualitiesSlope: 0 to 2 percentDepth to restrictive feature: 12 to 20 inches to strongly contrasting textural

stratificationNatural drainage class: Somewhat poorly drainedCapacity of the most limiting layer to transmit water (Ksat): Moderately high to

high (0.57 to 1.98 in/hr)Depth to water table: About 12 to 24 inches


17

Frequency of flooding: NoneFrequency of ponding: NoneAvailable water storage in profile: Low (about 5.5 inches)

Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 4wHydrologic Soil Group: B/DForage suitability group: Seasonally Wet Soils (G002XN202WA)Hydric soil rating: No

Description of Woodlyn, Drained

SettingLandform: TerracesParent material: Volcanic ash and loess over glacial outwash

Typical profileH1 - 0 to 9 inches: loamH2 - 9 to 12 inches: loamH3 - 12 to 25 inches: loamy sandH4 - 25 to 60 inches: coarse sand

Properties and qualitiesSlope: 0 to 2 percentDepth to restrictive feature: 10 to 20 inches to ortsteinNatural drainage class: Poorly drainedCapacity of the most limiting layer to transmit water (Ksat): Very low to moderately

low (0.00 to 0.06 in/hr)Depth to water table: About 12 to 24 inchesFrequency of flooding: NoneFrequency of ponding: NoneAvailable water storage in profile: Low (about 3.9 inches)

Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 6sHydrologic Soil Group: DForage suitability group: Limited Depth Soils (G002XN302WA)Hydric soil rating: Yes

Minor Components


Fishtrap, undrainedPercent of map unit: 5 percentLandform: DepressionsHydric soil rating: Yes

Woodlyn, undrainedPercent of map unit: 5 percentLandform: DepressionsHydric soil rating: Yes


18

79—Kickerville silt loam, 0 to 3 percent slopes


Map Unit CompositionKickerville and similar soils: 80 percentMinor components: 20 percentEstimates are based on observations, descriptions, and transects of the mapunit.

Description of Kickerville

SettingLandform: TerracesParent material: Loess and volcanic ash over glacial outwash

Typical profileH1 - 0 to 9 inches: ashy silt loamH2 - 9 to 22 inches: ashy silt loamH3 - 22 to 32 inches: very gravelly loamH4 - 32 to 60 inches: very gravelly sand


stratificationNatural drainage class: Well drainedCapacity of the most limiting layer to transmit water (Ksat): Moderately high to

high (0.57 to 1.98 in/hr)Depth to water table: More than 80 inchesFrequency of flooding: NoneFrequency of ponding: NoneAvailable water storage in profile: Moderate (about 7.7 inches)

Interpretive groupsLand capability classification (irrigated): 1Land capability classification (nonirrigated): 1Hydrologic Soil Group: BForage suitability group: Soils with Few Limitations (G002XN502WA)Hydric soil rating: No


19

Minor Components


BirchbayPercent of map unit: 3 percentHydric soil rating: No

LaxtonPercent of map unit: 3 percentHydric soil rating: No


BarnhardtPercent of map unit: 2 percentHydric soil rating: No

Shalcar, undrainedPercent of map unit: 2 percentLandform: Flood plainsHydric soil rating: Yes

Fishtrap, undrainedPercent of map unit: 2 percentLandform: Flood plainsHydric soil rating: Yes

80—Kickerville silt loam, 3 to 8 percent slopes


Map Unit CompositionKickerville and similar soils: 90 percentMinor components: 10 percentEstimates are based on observations, descriptions, and transects of the mapunit.

Description of Kickerville

SettingLandform: Terraces


20

Parent material: Loess and volcanic ash over glacial outwash

Typical profileH1 - 0 to 9 inches: ashy silt loamH2 - 9 to 22 inches: ashy silt loamH3 - 22 to 32 inches: very gravelly loamH4 - 32 to 60 inches: very gravelly sand


stratificationNatural drainage class: Well drainedCapacity of the most limiting layer to transmit water (Ksat): Moderately high to

high (0.57 to 1.98 in/hr)Depth to water table: More than 80 inchesFrequency of flooding: NoneFrequency of ponding: NoneAvailable water storage in profile: Moderate (about 7.7 inches)

Interpretive groupsLand capability classification (irrigated): 3eLand capability classification (nonirrigated): 2eHydrologic Soil Group: BForage suitability group: Soils with Few Limitations (G002XN502WA)Hydric soil rating: No

Minor Components




Fishtrap, undrainedPercent of map unit: 1 percentLandform: Flood plainsHydric soil rating: Yes

BarnhardtPercent of map unit: 1 percentHydric soil rating: No


LaxtonPercent of map unit: 1 percentHydric soil rating: No


21

171—Urban land

Map Unit SettingNational map unit symbol: 2j34Elevation: 0 to 300 feetMean annual precipitation: 30 to 50 inchesFarmland classification: Not prime farmland

Map Unit CompositionUrban land: 90 percentMinor components: 10 percentEstimates are based on observations, descriptions, and transects of the mapunit.

Description of Urban Land

Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 8Hydric soil rating: No

Minor Components





WhatcomPercent of map unit: 1 percentHydric soil rating: No

SqualicumPercent of map unit: 1 percentHydric soil rating: No


22

184—Whitehorn silt loam, 0 to 2 percent slopes

Map Unit SettingNational map unit symbol: 2j3lElevation: 50 to 300 feetMean annual precipitation: 30 to 40 inchesMean annual air temperature: 48 to 52 degrees FFrost-free period: 160 to 200 daysFarmland classification: Prime farmland if drained

Map Unit CompositionWhitehorn, undrained, and similar soils: 85 percentMinor components: 15 percentEstimates are based on observations, descriptions, and transects of the mapunit.

Description of Whitehorn, Undrained

SettingLandform: DepressionsParent material: Volcanic ash, glaciomarine deposits, glaciofluvial deposits, and

loess

Typical profileH1 - 0 to 10 inches: ashy silt loamH2 - 10 to 18 inches: loamH3 - 18 to 26 inches: very gravelly sandy loamH4 - 26 to 60 inches: silt loam

Properties and qualitiesSlope: 0 to 2 percentDepth to restrictive feature: More than 80 inchesNatural drainage class: Poorly drainedCapacity of the most limiting layer to transmit water (Ksat): Moderately low to

moderately high (0.06 to 0.20 in/hr)Depth to water table: About 0 inchesFrequency of flooding: NoneFrequency of ponding: FrequentAvailable water storage in profile: High (about 10.5 inches)

Interpretive groupsLand capability classification (irrigated): None specifiedLand capability classification (nonirrigated): 5wHydrologic Soil Group: C/DForage suitability group: Wet Soils (G002XN102WA)Hydric soil rating: Yes

Minor Components

Whitehorn, drainedPercent of map unit: 4 percent


23

Hydric soil rating: Yes


Bellingham, undrainedPercent of map unit: 3 percentLandform: DepressionsHydric soil rating: Yes





193—Water

Map Unit CompositionWater: 100 percentEstimates are based on observations, descriptions, and transects of the mapunit.


24

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

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

Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service 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 hydric soils 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 for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, 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 of Agriculture, 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 and Delaware Department of Natural Resources and Environmental Control, Wetlands Section.

United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report 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

25

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 Handbook 296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053624

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


26

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



REG092/P66 18030 APPENDIX C ISSUE FOR PERMIT, REVISION A ANVIL 108976 NOVEMBER 21, 2019

APPENDIX C: SWPP PLANS – FULL SIZE

Drawing No. Rev. Description

Structural

28-BS-0451 A STORM WATER POLLUTION PREVENTION PLAN COVER SHEET AND PROJECT LOCATION SITE PREPARATION - UNIT 28

28-BS-0452 A STORM WATER POLLUTION PREVENTION PLAN SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0453 A STORM WATER POLLUTION PREVENTION PLAN GENERAL NOTES SITE PREPARATION - UNIT 28

28-BS-0454 A STORM WATER POLLUTION PREVENTION PLAN KEY PLAN SITE PREPARATION - UNIT 28

28-BS-0455 A STORM WATER POLLUTION PREVENTION PLAN RAIL PRE-DEVELOPMENT CONDITIONS SITE PREPARATION - UNIT 28

28-BS-0456 A STORM WATER POLLUTION PREVENTION PLAN RAIL SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0457 A STORM WATER POLLUTION PREVENTION PLAN RAIL WEST SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0458 A STORM WATER POLLUTION PREVENTION PLAN RAIL CENTRAL SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0459 A STORM WATER POLLUTION PREVENTION PLAN RAIL EAST SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0460 A STORM WATER POLLUTION PREVENTION PLAN TEMPORARY SEDIMENT POND SITE PREPARATION - UNIT 28

28-BS-0461 A STORM WATER POLLUTION PREVENTION PLAN DIESEL TANKS PRE-DEVELOPMENT CONDITIONS SITE PREPARATION - UNIT 28

28-BS-0462 A STORM WATER POLLUTION PREVENTION PLAN DIESEL TANKS SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0463 A STORM WATER POLLUTION PREVENTION PLAN PROPANE BULLET PRE-DEVELOPMENT CONDITIONS SITE PREPARATION - UNIT 28

28-BS-0464 A STORM WATER POLLUTION PREVENTION PLAN PROPANE BULLET SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0465 A STORM WATER POLLUTION PREVENTION PLAN FOG TANKS PRE-DEVELOPMENT CONDITIONS SITE PREPARATION - UNIT 28

28-BS-0466 A STORM WATER POLLUTION PREVENTION PLAN FOG TANKS SITE PLAN SITE PREPARATION - UNIT 28

28-BS-0467 A STORM WATER POLLUTION PREVENTION PLAN ADMIN. BLDG PRE-DEVELOPMENT CONDITIONS SITE PREPARATION - UNIT 28

28-BS-0468 A STORM WATER POLLUTION PREVENTION PLAN ADMIN. BLDG SITE PLAN SITE PREPARATION - UNIT 28



REG092/P66 18030 APPENDIX D ISSUE FOR PERMIT, REVISION A ANVIL 108976 NOVEMBER 21, 2019

APPENDIX D: CONSTRUCTION PLANS – FULL SIZE


Structural

28-BS-0472 A GRADING PLAN KEY PLAN SITE PREPARATION - UNIT 28

28-BS-0473 A GRADING PLAN RAIL AREA KEY PLAN SITE PREPARATION - UNIT 28

28-BS-0474 A GRADING PLAN RAIL AREA 1 SITE PREPARATION - UNIT 28






28-BS-0480 A PLAN AND PROFILE ARRIVAL/TRACK 2 KEY PLAN SITE PREPARATION - UNIT 28

28-BS-0481 A PLAN AND PROFIILE ARRIVAL/TRACK 2 STA 200+00 - 209+00 SITE PREPARATION - UNIT 28

28-BS-0482 A PLAN AND PROFILE ARRIVAL/TRACK 2 STA 209+00 - 218+25 SITE PREPARATION - UNIT 28

28-BS-0483 A PLAN AND PROFILE ARRIVAL/TRACK 2 STA 218+25 - END SITE PREPARATION - UNIT 28

28-BS-0484 A PLAN AND PROFILE TRACK 4462 SITE PREPARATION - UNIT 28

28-BS-0485 A SECTIONS TYPICAL RAIL SECTION SITE PREPARATION - UNIT 28

28-BS-0486 A GRADING SECTIONS ARRIVAL/TRACK 2 & TRACK 4462 CROSS SECTIONS SITE PREPARATION - UNIT 28








28-BS-0494 A PROFILE RAIL AREA RETAINING WALLS I SITE PREPARATION - UNIT 28

28-BS-0495 A PROFILE RAIL AREA RETAINING WALLS II SITE PREPARATION - UNIT 28

28-BS-0496 A SECTIONS RETAINING WALLS SITE PREPARATION - UNIT 28

28-BS-0497 A GRADING PLAN TRUCK LOOP GRADING SITE PREPARATION - UNIT 28





28-BS-0498 A GRADING PLAN DIESEL TANK KEY PLAN SITE PREPARATION - UNIT 28

28-BS-0499 A GRADING PLAN TANK 960XX1 SITE PREPARATION - UNIT 28




28-BS-0503 A GRADING PLAN PROPANE BULLETS SITE PREPARATION - UNIT 28

28-BS-0504 A GRADING PLAN FOG TANKS SITE PREPARATION - UNIT 28

28-BS-0505 A PROFILES FOG TANKS SITE PREPARATION - UNIT 28

28-BS-0506 A GRADING PLAN ADMINISTRATION BUILDING ADDITION SITE PREPARATION - UNIT 28

28-BS-0507 A GRADING PLAN WAREHOUSE/LAB BLDG ADDITION SITE PREPARATION - UNIT 28

28-BS-0508 A DETAILS GRADING DETAILS I SITE PREPARATION- UNIT 28

28-BS-0509 A DETAILS GRADING DETAILS II SITE PREPARATION - UNIT 28

27-BS-0419 A DRAINAGE PLAN RAIL AREA KEY PLAN SEWERS AND STORM DRAINS - UNIT 27

27-BS-0420 A DRAINAGE PLAN RAIL AREA 1 SEWERS AND STORM DRAINS - UNIT 27





108976-S-1067 Ref. Only

B PROJECT KEY PLAN

108976-S-1068 Ref. Only

B PLAN PROJECT AREA 1

108976-S-1069 Ref. Only


108976-S-1070 Ref. Only


108976-S-1071 Ref. Only

A PLAN PIPE SUPPORTS AREA 4

108976-S-1072 Ref. Only

A PLAN PIPE SUPPORTS AREA 5

108976-S-1073 Ref. Only

A PLAN PROJECT AREA 6

108976-S-1074 Ref. Only

A PLANS & ELEVATIONS BRIDGE #1

108976-S-1075 Ref. Only






108976-S-1076 Ref. Only


108976-S-1077 Ref. Only

A PLAN & ELEVATIONS TYPICAL PIPERACK

108976-S-1078 Ref. Only

A DETAILS TYPICAL PIPE SUPPORTS

issue for permit, revision a - whatcom county, wa

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