Attachment D_AppxL-SWQMP — San Marcos City Council, March 26, 2024

ATTACHMENT D

ENVIRONMENTAL IMPACT REPORT

APPENDIX L
SWQMP
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/14/22

City of San Marcos

PRIORITY DEVELOPMENT PROJECT (PDP)

STORM WATER QUALITY MANAGEMENT PLAN (SWQMP)
FOR

CAPALINA APARTMENTS
CAPALINA ROAD, SAN MARCOS, CA 92069

ASSESSOR'S PARCEL NUMBER(S):
219-115-33
ENGINEER OF WORK:

___________________________________________________________________________________ Robert Dentino, PE 45629

PREPARED FOR:

Capalina SMA Manger LLC,
A California limited liability company
Contact Person: Jon Rilling, Manager
1650 Sagewood Way
San Marcos, CA 92078
Phone: 760-445-5144
E-mail: [email protected]

PDP SWQMP PREPARED BY:

Excel Engineering
440 State Place
Escondido, CA 92029
760-745-8118

DATE OF SWQMP:

PLANS PREPARED BY:

Excel Engineering
440 State Place
Escondido, CA 92029
760-745-8118

6/12/2023
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
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City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

TABLE OF CONTENTS

Acronym Sheet
PDP SWQMP Preparer's Certification Page
PDP SWQMP Project Owner's Certification Page
Submittal Record
Project Vicinity Map
FORM I-1 Applicability of Storm Water BMP Requirements
FORM I-2 Project Type Determination Checklist (Standard Project or PDP) FORM I-3B Site Information Checklist for PDPs
FORM I-4 Source Control BMP Checklist for All Development Projects FORM I-5 Site Design BMP Checklist for All Development Projects FORM I-6 Summary of PDP Structural BMPs
Attachment 1: Backup for PDP Pollutant Control BMPs
Attachment 1a: DMA Exhibit
Attachment 1b: Tabular Summary of DMAs and Design Capture Volume Calculations Attachment 1c: Harvest and Use Feasibility Screening (when applicable) Attachment 1d: Categorization of Infiltration Feasibility Condition (when applicable) Attachment 1e: Pollutant Control BMP Design Worksheets / Calculations Attachment 2: Backup for PDP Hydromodification Control Measures Attachment 2a: Hydromodification Management Exhibit
Attachment 2b: Management of Critical Coarse Sediment Yield Areas Attachment 2c: Geomorphic Assessment of Receiving Channels Attachment 2d: Flow Control Facility Design
Attachment 3: Structural BMP Maintenance Plan
Attachment 3a: B Structural BMP Maintenance Thresholds and Actions Attachment 3b: Draft Maintenance Agreement (when applicable) Attachment 4: Copy of Plan Sheets Showing Permanent Storm Water BMPs

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

ACRONYMS

APN Assessor's Parcel Number
BMP Best Management Practice
HMP Hydromodification Management Plan
HSG Hydrologic Soil Group
MS4 Municipal Separate Storm Sewer System
N/A Not Applicable
NRCS Natural Resources Conservation Service
PDP Priority Development Project
PE Professional Engineer
SC Source Control
SD Site Design
SDRWQCB San Diego Regional Water Quality Control Bo ard SIC Standard Industrial Classification
SWQMP Storm Water Quality Management Plan

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

PDP SWQMP PREPARER'S CERTIFICATION PAGE

Project Name: Rilling Enterprises Capalina Apartments

Permit Application Number:

PREPARER'S CERTIFICATION

I hereby declare that I am the Engineer in Responsible Charge of design of storm water best management practices (BMPs) for this project, and that I have exercised responsible charge over the design of the BMPs as defined in Section 6703 of the Business and Prof essions Code, and that the design is consistent wit h the PDP requirements of the [City of San Marcos] BM P Design Manual, which is a design manual for compliance with local [City of San Marcos] and regi onal MS4 Permit (California Regional Water Quality Control Board San Diego Region Order No. R9-2015-0100) requirements for storm water management.

I have read and understand that the [City Engineer] has adopted minimum requirements for managing urban runoff, including storm water, from land deve lopment activities, as described in the BMP Design Manual. I certify that this PDP SWQMP has been completed to the best of my ability and accurately reflects the project being proposed and the applicable BMPs proposed to minimize the potentially negative impacts of this project's land development activities on water quality. I understand and acknowledge that the plan check review of this PDP SWQMP by the [Cit y Engineer] is confined to a review and does not relieve me, as the Engineer in Responsible Charge o f design of storm water BMPs for this project, of m y responsibilities for project design.

________________________________________________________ Engineer of Work's Signature, PE Number & Expiration Date

Robert D. Dentino, RCE
________________________________________________________ Print Name

EXCEL ENGINEERING
________________________________________________________ Company

____________________________
Date
Engineer's Seal:

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
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City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 1/18/2023

PDP SWQMP PROJECT OWNER'S CERTIFICATION PAGE

Project Name: Rilling Enterprises Capalina Apartments

Permit Application Number:

PROJECT OWNER'S CERTIFICATION

This PDP SWQMP has been prepared for Capalina SMA, LLC by Excel Engineering. The PDP SWQMP is intended to comply with the PDP requirements of the City of San Marcos BMP Design Manual, which is a design manual for compliance with local City of San Marcos and regional MS4 Permit (California Regional Water Quality Control Board San Diego Region Order No. R9-2015-0100) requirements for storm water management.

The undersigned, while it owns the subject property, is responsible for the implementation of the provisions of this plan. Once the undersigned transfers its interests in the property, its successor-in- interest shall bear the aforementioned responsibility to implement the best management practices (BMPs) described within this plan, including ensuring on-going operation and maintenance of structural BMPs. A signed copy of this document shall be available on the subject property into perpetuity.

________________________________________________________ Project Owner's Signature

________________________________________________________ Print Name

Capalina SMA, LLC
________________________________________________________ Company

____________________________
Date

DocuSign Envelope ID: FCD0CB18-BB99-424F-87C3-C121B47C83D8 1/18/2023
Jon Rilling Rob Honer
1/18/2023
!iDocuSigned by:
~ bl,\, ~lfilA1
28A6F2FD28BD4 7B ..

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
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City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

SUBMITTAL RECORD

Use this Table to keep a record of submittals of th is PDP SWQMP. Each time the PDP SWQMP is re- submitted, provide the date and status of the project. In column 4 summarize the changes that have been made or indicate if response to plancheck comments is included. When applicable, insert response to plancheck comments behind this page.

Submittal
Number
Date Project Status Summary of Changes
1 10 /04 /20 22  Preliminary Design /
Planning/ CEQA
 Final Design
Initial Submittal
2  Preliminary Design /
Planning/ CEQA
 Final Design

3  Preliminary Design /
Planning/ CEQA
Final Design

4  Preliminary Design /
Planning/ CEQA
 Final Design

06/12/2023
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

PROJECT VICINITY MAP

Project Name: RILLING ENTERPRISES CAPALINA APARTMENTS

Permit Application Number:

Project Vicinity Map

VICINITY MAP

NOT TO SCALE
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Applicability of Storm Water Best Management Practices (BMP) Requirements (Storm Water Intake Form for all Development Permit Applications) For detailed information please visit:
http://www.san-marcos.net/departments/development-services/stormwater/development-planning Form I-1
[March 15, 2016]
Project Identification
Project Name: RILLING ENTERPRISES CAPALINA APARTMENTS
Description: Apartments with parking lots on a 2.51 acre site Permit Application Number (if applicable): Date :10 /04 /2022 Project Address: Capalina Road, San Marcos, CA 92069
Determination of Requirements
This form is required as part of the City’s application process. The purpose of this form is to identify potential land deve lopment planning storm water requirements that apply to development projects.

Development projects are defined as construction, rehabilitation, redevelopment, or reconstruction of any public or private projects. In addition, the identification of a development project, as it relates to storm water regulations, would truly apply to development and redevelopment activities that have the potential to contact storm water and contribute a source of pollutants, or reduce the natural absorption and infiltration abilities of the land.

To access the BMP Design Manual, Storm Water Quality Management Plan (SWQMP) templates, and other pertinent information related to this program please refer to:
http://www.san-marcos.net/departments/development-services/stormwater/development-planning

Please answer each of the following steps below, starting with Step 1 and progressing through each step until reaching "Stop".

Step Answer Progression
Step 1: Based on the above, Is the project a
"development project" (See definition above)?
See Section 1.3 of the BMP Design Manual for
further guidance if necessary.
 Yes
Go to Step 2.
 No Permanent BMP requirements do not apply. No
SWQMP will be required. Provide brief discussion
below. STOP.

Discussion / justification if the project is not a "development project" (e.g., the project includes only interior remodels within an existing building):

Step 2: Is the project a Standard Project, Priority
Development Project (PDP), or exception to PDP
definitions?

To answer this item, complete Form I-2, Project
Type Determination. See Section 1.4 of the BMP
Design Manual in its entirety for guidance.

In addition to Section 1.4, please refer to the
City’s SWQMP Submittal Requirements form.


Standard Project Only Standard Project requirements apply, including Standard Project SWQMP. STOP.
 PDP Standard and PDP requirements apply, including
PDP SWQMP. Go to Step 3 on the following page.
 Exception to PDP
definitions
Standard Project requirements apply, and any
additional requirements specific to the type of
project. Provide discussion and list any additional
requirements below. Prepare Standard Project
SWQMP. STOP.

Discussion / justification, and additional requirements for excepti ons to PDP definitions, if applicable:

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

Form I-1 Page 2, Form Date: March 15, 2016
Step 3 (PDPs only) . Please answer the list of questions in this section to determine if hydromodification requirements reply to the proposed PDP. Does the project:

Step 3a. Discharge storm water
runoff directly to the Pacific Ocean?
 Yes STOP . Hydromodification requirements do not apply.  No Continue to Step 3b.

Step 3b . Discharge storm water
runoff directly to an enclosed
embayment, not within protected
areas?
 Yes
STOP . Hydromodification requirements do not apply.
 No Continue to Step 3c.

Step 3c . Discharge storm water
runoff directly to a water storage
reservoir or lake, below spillway or
normal operating level?
 Yes
STOP . Hydromodification requirements do not apply.
 No Continue to Step 3d.

Step 3d . Discharge storm water
runoff directly to an area identified in
WMAA?
 Yes
STOP . Hydromodification requirements do not apply.
 No Hydromodification requirements apply to the project. Go to Step

4. Discussion / justification if hydromodification control requirements do not apply:

Step 4 (PDPs subject to
hydromodification control
requirements only). Does protection
of critical coarse sediment yield areas
apply based on review of WMAA
Potential Critical Coarse Sediment
Yield Area Map?
See Section 6.2 of the BMP Design
Manual for guidance.

 Yes
Management measures required for protection of critical coarse sediment yield areas (Chapter 6.2).

Stop.
 No Management measures not required for protection of critical coarse sediment yield areas.

Provide brief discussion below.

Stop.

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

The map above shows potential critical course sediment areas. No potential critical coarse sediment yield areas nearby that will influence the project.

Potential Critical Coarse Sediment
Capalina Rd
PCCSYA
Project Site
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Project Type Determination Checklist Form I-2
[March 15, 2016]
Project Information
Project Name/Description: RILLING ENTERPRISES CAPALINA APARTMENTS Permit Application Number (if applicable): Date: 10/04/2022 Project Address: Capalina Road, San Marcos, CA 92069
Project Type Determination: Standard Project or Priority Development Project (PDP) The project is (select one):  New Development  Redevelopment The total proposed newly created or replaced impervious area is: ft2 ( ) acres Is the project in any of the following categories, (a) through (f)? Yes

No

(a) New development projects that create 10,000 square feet or more of impervious surfaces (collectively over the entire project site). This includes commercial, industrial, residential, mixed-use, and public development projects on public or private land.

Yes

No

(b) Redevelopment projects that create and/or replace 5,000 square feet or more of impervious surface (collectively over the entire project site on an existing site of 10,000 square feet or more of impervious surfaces). This includes commercial, industrial, residential, mixed-use, and public development projects on public or private land.

Yes

No

(c) New and redevelopment projects that create and/or replace 5,000 square feet or more of impervious surface (collectively over the entire project site), and support one or more of the following uses:
(i) Restaurants. This category is defined as a facility that sells prepared foods and drinks for consumption, including stationary lunch counters and refreshment stands selling prepared foods and drinks for immediate consumption (Standard Industrial Classification (SIC) code 5812). (ii) Hillside development projects. This category includes development on any natural slope that is twenty-five percent or greater.
(iii) Parking lots. This category is defined as a land area or facility for the temporary parking or storage of motor vehicles used personally, for business, or for commerce.
(iv) Streets, roads, highways, freeways, and driveways. This category is defined as any paved impervious surface used for the transportation of automobiles, trucks, motorcycles, and other vehicles.

I
I
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-2 Page 2 , Form Date: March 15, 2016
Yes

No

(d) New or redevelopment projects that create and/ or replace 2,500 square feet or more of impervious surface (collectively over the entire project site), and discharging directly to an Environmentally Sensitive Area (ESA). “Discharging directly to” includes flow that is conveyed overland a distance of 200 feet or less from the project to the ESA, or conveyed in a pipe or open channel any distance as an isolated flow from the project to the ESA (i.e. not commingled with flows from adjacent lands).

Note: ESAs are areas that include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas designated as Areas of Special Biological Significance by the State Water Board and San Diego Water Board; State Water Quality Protected Areas; water bodies designated with the RARE beneficial use by the State Water Board and San Diego Water Board; and any other equivalent environmentally sensitive areas which have been identified by the Copermittees. See BMP Design Manual Section 1.4.2 for additional guidance.

Yes

No

(e) New development projects , or redevelopment projects that create and/or replace 5,000 square feet or more of impervious surface, that support one or more of the following uses:
(i) Automotive repair shops. This category is defined as a facility that is categorized in any one of the following SIC codes: 5013, 5014, 5541, 7532- 7534, or 7536-7539.
(ii) Retail gasoline outlets (RGOs). This category includes RGOs that meet the following criteria: (a) 5,000 square feet or more or (b) a projected Average Daily Traffic (ADT) of 100 or more vehicles per day.

Yes

No

(f) New or rede velopment projects that result in the disturbance of one or more acres of land and are expected to generate pollutants post construction.

Note: See BMP Design Manual Section 1.4.2 for additional guidance.

Does the project meet the definition of one or more of the Priority Development Project categories (a) through (f) listed above?
 No – the project is not a Priority Development Project (Standard Project).  Yes – the project is a Priority Development Project (PDP).

The following is for redevelopme nt PDPs only:

The area of existing (pre-project) impervious area at the project site is: ___0____ ft 2 (A) The total proposed newly created or replaced impervious area is ________ ft 2 (B) Percent impervious surface created or replaced (B/A)*100: _______% The percent impervious surface created or replaced is (select one based on the above calculation):
 less than or equal to fifty percent (50%) – only new impervious areas are considered PDP OR
 greater than fifty percent (50%) – the entire project site is a PDP

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Site Information Checklist
For PDPs
Form I-3B (PDPs)
[March 15, 2016]
Project Summary Information
Project Name RILLING ENTERPRISES CAPALINA APARTMENTS
Project Address Capalina Road, San Marcos, CA 92069

Assessor's Parcel Number(s) (APN(s)) 219 -115 -33
Permit Application Number
Project Hydrologic Unit Select One:
 Santa Margarita 902
 San Luis Rey 903
 Carlsbad 904
 San Dieguito 905
 Penasquitos 906
 San Diego 907
 Pueblo San Diego 908
 Sweetwater 909
 Otay 910
 Tijuana 911
Project Watershed
(Complete Hydrologic Unit, Area, and Subarea
Name with Numeric Identifier)
The project is located in the Richland Hydrologic Sub
Area of the San Marcos Hydrologic Area of the
CARLSBAD Hydrologic Unit (904.52).

Parcel Area
(total area of Assessor's Parcel(s) associated
with the project)

2.51 Acres ( 109335.6 Square Feet)
Area to be Disturbed by the Project
(Project Area)

Acres ( Squa re Feet)
Project Proposed Impervious Area
(subset of Project Area)

Acres ( Squar e Feet)
Project Proposed Pervious Area
(subset of Project Area)

Acres ( Squ are Feet)
Note: Proposed Impervious Area + Proposed Pervious Area = Area to be Disturbed by the Project.

This may be less than the Parcel Area.

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 2 of 10 , Form Date: March 15 , 201 6
Descrip tion of Existing Site Condition
Current Status of the Site (select all that apply):
 Existing development
 Previously graded but not built out
 Demolition completed without new construction
 Agricultural or other non-impervious use
 Vacant, undeveloped/natural

Description / Additional Information:

Existing Land Cover Includes (select all that apply) :
 Vegetative Cover
 Non-Vegetated Pervious Areas
 Impervious Areas

Description / Additional Information:

Underlying Soil belongs to Hydrologic Soil Group (select all that apply) :
 NRCS Type A
 NRCS Type B
 NRCS Type C
 NRCS Type D

Approximate Depth to Groundwater (GW):
 GW Depth < 5 feet
 5 feet < GW Depth < 10 feet
 10 feet < GW Depth < 20 feet
 GW Depth > 20 feet

Existing Natural Hydrologic Features (select all that apply):
 Watercourses
 Seeps
 Springs
 Wetlands
 None

Description / Additional Information:

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 3 of 10 , Form Date: March 15, 2016
Description of Existing Site Drainage Patterns
How is storm water runoff conveyed from the site? At a minimum, this description should answer:
(1) whether existing drainage conveyance is natural or urban; (2) Is runoff from offsite conveyed through the site? if yes, quantify all offsite drainage areas, design flows, and locations where offsite flows enter the project site, and summarize how such flows are conveyed through the site;
(3)Provide details regarding existing project site drainage conveyance network, including any existing storm drains, concrete channels, swales, detention facilities, storm water treatment facilities, natural or constructed channels; and
(4) Identify all discharge locations from the existing project site along with a summary of conveyance system size and capacity for each of the discharge locations. Provide summary of the pre-project drainage areas and design flows to each of the existing runoff discharge locations.

Describe existing site drainage patterns:

The existing site is currently undeveloped. The project is fronts on West Mission Road to the north and Capalina Road to the south. The property drains primarily by overland flow to West Mission Road then easterly along West Mission Roads curb and getter to an existing storm drain system located at North Pacific Street.

The proposed development northerly of the right of way of Capalina Road drains to the north (West Mission Road) with the drainage leaving the site in two outlets to the existing curb and gutter along West Mission Road which flow to discharge point 1 at the projects northeasterly corner. The site improvements within the right of way of Capalina Road and consist of road widening, curb and gutter, driveway aprons and right of way improvements drains easterly to discharge point 2.

Downstream of the two discharge points, surface runoff continues easterly to the existing storm drain inlets located at North Pacific Street, the projects POC.

The pre-development discharges a peak 100-year flow of 5.627 CFS to Discharge Point 1, 1.571 CFS to Discharge Point 2, total 7.198 CFS to POC.

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 4 of 10 , Form Date: March 15, 2016
Description of Proposed Site Development
Project Description / Proposed Land Use and/or Activities:

The proposed project is a multifamily residential facility containing two buildings and associated surface parking and supporting utilities.

List/describe proposed impervious features of the project (e.g., buildings, roadways, parking lots, courtyards, athletic courts, other impervious features):

The proposed impervious areas of the project will include the residential units, the associated parking areas and driveway areas, the associated landscape flatwork (sidewalks) and the paved access road up to the upper areas of the site.

List/describe proposed pervious features of the project (e.g., landscape areas):

The pervious features of the site include all the landscape areas and the remaining natural areas with graded slopes.

Does the project include grading and changes to site topography?  Yes
 No

Description / Additional Information:

The grading will occur to facilitate the construction of the residential units, associated site improvements, and relatively slope areas around the site. The maximum cut and fill slopes have a gradient of about 2:1 (horizontal : vertical).

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 5 of 10 , Form Date: March 15, 2016
Description of Proposed Site Drainage Patterns
Does the project include changes to site drainage (e.g., installation of new storm water conveyance systems)?
 Yes
 No

If yes, provide details regarding the proposed project site drainage conveyance network, including storm drains, concrete channels, swales, detention facilities, storm water treatment facilities, natural or constructed channels, and the method for conveying offsite flows through or around the proposed project site. Identify all discharge locations from the proposed project site along with a summary of the conveyance system size and capacity for each of the discharge locations. Provide a summary of pre- and post-project drainage areas and design flows to each of the runoff discharge locations. Reference the drainage study for detailed calculations.

Describe proposed site drainage patterns:

This proposed project is a multifamily residential facility containing two buildings and associated surface parking and supporting utilities. Two biofiltration basins are proposed to mitigate the storm water quality for the project (BMP-A and BMP-B). BMP-A is located near the northeast corner of the site and BMP-B is located near the northwest corner of the site. The biofiltration basins will collect the storm water runoff from the building and proposed parking lots and convey the storm water through storage tanks, storm drain systems and curb and gutters to POC.

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

Summary of Q100 Runoff

PRE POST POST MITIGATION

Discharge
Point 1
Discharge
Point 2 POC
Discharge
Point 1
Discharge
Point 2 POC
Discharge
Point 1
Discharge
Point 2 POC
Q (CFS) 5.627 1.571 7.198
Tc
(MIN) 11.112 5.23 4.7 4.6
A
(ACRE) 2.7 0.398 3.098 3.098

11.112

2.978

18.158

21.136
7 2.675

0.423

4.77 7.162

2.978

4.184

5.677

4.61 5.677

3.096

0.423

2.673
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 6 of 10 , Form Date: March 15, 2016
Identify whether any of the following features, activities, and/or pollutant source areas will be present (select all that apply):
 On-site storm drain inlets
 Interior floor drains and elevator shaft sump pumps
 Interior parking garages
 Need for future indoor & structural pest control
 Landscape/Outdoor Pesticide Use
 Pools, spas, ponds, decorative fountains, and other water features  Food service
 Refuse areas
 Industrial processes
 Outdoor storage of equipment or materials
 Vehicle and Equipment Cleaning
 Vehicle/Equipment Repair and Maintenance
 Fuel Dispensing Areas
 Loading Docks
 Fire Sprinkler Test Water
 Miscellaneous Drain or Wash Water
 Plazas, sidewalks, and parking lots

Description / Additional Information:

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 7 of 10 , Form Date: March 15, 2016
Identification and Narrative of Receiving Water and Pollutants of Concern Describe flow path of storm water from the project site discharge location(s), through urban storm conveyance systems as applicable, to receiving creeks, rivers, and lagoons as applicable, and ultimate discharge to the Pacific Ocean (or bay, lagoon, lake or reservoir, as applicable):

The project is located in the Richland Hydrologic Sub Area of the San Marcos Hydrologic Area of the CARLSBAD Hydrologic Unit (904.52). The project discharges to a public storm drain system which discharges to an un-named tributary which discharges to the San Marcos Creek which discharges to the Batiquitos Lagoon which discharges to the Pacific Ocean.

List any 303(d) impaired water bodies within the path of storm water from the project site to the Pacific Ocean (or bay, lagoon, lake or reservoir, as applicable), identify the pollutant(s)/stressor(s) causing impairment, and identify any TMDLs and/or Highest Priority Pollutants from the WQIP for the impaired water bodies:
303(d) Impaired Water Body Pollutant(s)/Stressor(s)
TMDLs / WQIP Highest Priority
Pollutant
San Marcos Creek DDE, Phosphorus, Sediment
Toxicity, Selenium

Lake San Marcos Ammonia (N), Nutrients
Batiquitos Lagoon Pathogen

Identification of Project Site Pollutants*
*Identification of project site pollutants is only required if flow-thru treatment BMPs are implemented onsite in lieu of retention or biofiltration BMPs (note the project must also participate in an alternative compliance program unless prior lawful approval to meet earlier PDP requirements is demonstrated)
Identify pollutants expected from the project site based on all proposed use(s) of the site (see BMP Design Manual Appendix B.6):

Pollutant
Not Applicable to the
Project Site
Expected from the
Project Site
Also a Receiving Water
Pollutant of Concern
Sediment
Nutrients
Heavy Metals
Organic Compounds
Trash & Debris
Oxygen Demanding
Substances
Oil & Grease
Bacteria & Viruses
Pesticides

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 8 of 10 , Form Date: March 15, 2016
Hydromodification Management Requirements
Do hydromodification management requirements apply (see Section 1.6 of the BMP Design Manual)?  Yes, hydromodification management flow control structural BMPs required.  No, the project will discharge runoff directly to existing underground storm drains discharging directly to water storage reservoirs, lakes, enclosed embayments, or the Pacific Ocean.  No, the project will discharge runoff directly to conveyance channels whose bed and bank are concrete-lined all the way from the point of discharge to water storage reservoirs, lakes, enclosed embayments, or the Pacific Ocean.
 No, the project will discharge runoff directly to an area identified as appropriate for an exemption by the WMAA for the watershed in which the project resides.

Description / Additional Information (to be provided if a 'No' answer has been selected above):

Critical Coarse Sediment Yield Areas*
*This Section only required if hydromodification management requirements apply City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Based on the maps provided within the WMAA, do potential critical coarse sediment yield areas exist within the project drainage boundaries?
 Yes
 No, No critical coarse sediment yield areas to be protected based on WMAA maps

If yes, have any of the optional analyses presented in Section 6.2 of the BMP Design Manual been performed?
 6.2.1 Verification of Geomorphic Landscape Units (GLUs) Onsite  6.2.2 Downstream Systems Sensitivity to Coarse Sediment  6.2.3 Optional Additional Analysis of Potential Critical Coarse Sediment Yield Areas Onsite  No optional analyses performed, the project will avoid critical coarse sediment yield areas identified based on WMAA maps

If optional analyses were performed, what is the final result?  No critical coarse sediment yield areas to be protected based on verification of GLUs onsite  Critical coarse sediment yield areas exist but additional analysis has determined that protection is not required. Documentation attached in Attachment 2.b of the SWQMP.  Critical coarse sediment yield areas exist and require protection. The project will implement management measures described in Sections 6.2.4 and 6.2.5 as applicable, and the areas are identified on the SWQMP Exhibit.

Discussion / Additional Information:

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 9 of 10 , Form Date: March 15, 2016
Flow Control for Post -Project Runoff*
*This Section only required if hydromodification management requirements apply List and describe point(s) of compliance (POCs) for flow control for hydromodification management (see Section 6.3.1). For each POC, provide a POC identification name or number correlating to the project's HMP Exhibit and a receiving channel identification name or number correlating to the project's HMP Exhibit.

There is one POC at the North Pacific Street of the property. Water flows from biofiltration basins and storage tank to the street at this point .

Has a geomorphic assessment been performed for the receiving channel(s)?  No, the low flow threshold is 0.1Q2 (default low flow threshold)  Yes, the result is the low flow threshold is 0.1Q2
 Yes, the result is the low flow threshold is 0.3Q2
 Yes, the result is the low flow threshold is 0.5Q2

If a geomorphic assessment has been performed, provide title, date, and preparer:

Discussion / Additional Information: (optional)

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-3B Page 10 of 10 , Form Date: March 15, 2016
Other Site Requirements and Constraints
When applicable, list other site requirements or constraints that will influence storm water management design, such as zoning requirements including setbacks and open space, or local codes governing minimum street width, sidewalk construction, allowable pavement types, and drainage requirements.

Optional Additional Information or Continuation of Previous Sections As Needed This space provided for additional information or continuation of information from previous sections as needed.

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Source Control BMP Checklist
for All Development Projects
(Standard Projects and Priority Development Projects)
Form I-4
[March 15, 2016]
Project Identification
Project Name: RILLING ENTERPRISES CAPALINA APARTMENTS
Permit Application Number:

Source Control BMPs
All development projects must implement source control BMPs SC-1 through SC-6 where applicable and feasible. See Chapter 4 and Appendix E of the Model BMP Design Manual for information to implement source control BMPs shown in this checklist.

Answer each category below pursuant to the following.
• "Yes" means the project will implement the source control BMP as described in Chapter 4 and/or Appendix E of the Model BMP Design Manual. Discussion / justification is not required. • "No" means the BMP is applicable to the project but it is not feasible to implement. Discussion / justification must be provided.
• "N/A" means the BMP is not applicable at the project site because the project does not include the feature that is addressed by the BMP (e.g., the project has no outdoor materials storage areas).

Discussion / justification may be provided.

Source Control Requirement Applied?
SC-1 Prevention of Illicit Discharges into the MS4  Yes  No  N/A Discussion / justification if SC-1 not implemented:

SC-2 Storm Drain Stenciling or Signage  Yes  No  N/A Discussion / justification if SC-2 not implemented:

SC-3 Protect Outdoor Materials Storage Areas from Rainfall, Run-On, Runoff, and Wind Dispersal
 Yes  No  N/A
Discussion / justification if SC-3 not implemented:

There are no proposed outdoor material storage areas for this project.

SC-4 Protect Materials Stored in Outdoor Work Areas from Rainfall, Run-On, Runoff, and Wind Dispersal
 Yes  No  N/A
Discussion / justification if SC-4 not implemented:

There are no proposed outdoor material work areas for this project.

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City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-4 Page 2 of 2 , Form Date: March 15, 2016
Source Control Requirement Applied?
SC -5 Protect Trash Storage Areas from Rainfall, Run -On, Runoff, and Wind Dispersal
 Yes  No  N/A
Discussion / justification if SC -5 not implemented:

SC -6 Additional BMPs Based on Potential Sources of Runoff Pollutants (must answer for each source listed below)
 On-site storm drain inlets
 Interior floor drains and elevator shaft sump pumps
 Interior parking garages
 Need for future indoor & structural pest control
 Landscape/Outdoor Pesticide Use
 Pools, spas, decorative fountains, and other water features  Food service
 Refuse areas
 Industrial processes
 Outdoor storage of equipment or materials
 Vehicle and Equipment Cleaning
 Vehicle/Equipment Repair and Maintenance
 Fuel Dispensing Areas
 Loading Docks
 Fire Sprinkler Test Water
 Miscellaneous Drain or Wash Water
 Plazas, sidewalks, and parking lots

 Yes
 Yes
 Yes
 Yes
Yes
 Yes
 Yes
 Yes
 Yes
 Yes
Yes
 Yes
 Yes
 Yes
 Yes
 Yes
 Yes

 No
 No
 No
 No
 No
 No
 No
 No
 No
 No
 No
 No
 No
 No
 No
 No
 No

 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
 N/A
Discussion / justification if SC -6 not implemented. Clearly identify which sources of runoff pollutants are discussed. Justification must be provided for all "No" answers shown above.

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Site Design BMP Checklist
for All Development Projects
(Standard Projects and Priority Development Projects)
Form I-5
[March 15, 2016]
Project Identification
Project Name: RILLING ENTERPRISES CAPALINA APARTMENTS
Permit Application Number:

Site Design BMPs
All development projects must implement site design BMPs SD-1 through SD-8 where applicable and feasible. See Chapter 4 and Appendix E of the Model BMP Design Manual for information to implement site design BMPs shown in this checklist.

Answer each category below pursuant to the following.
• "Yes" means the project will implement the site design BMP as described in Chapter 4 and/or Appendix E of the Model BMP Design Manual. Discussion / justification is not required. • "No" means the BMP is applicable to the project but it is not feasible to implement. Discussion / justification must be provided.
• "N/A" means the BMP is not applicable at the project site because the project does not include the feature that is addressed by the BMP (e.g., the project site has no existing natural areas to conserve).

Discussion / justification may be provided.

Site Design Requirement Applied?
SD-1 Maintain Natural Drainage Pathways and Hydrologic Features  Yes  No  N/A Discussion / justification if SD-1 not implemented:

SD-2 Conserve Natural Areas, Soils, and Vegetation  Yes  No  N/A Discussion / justification if SD-2 not implemented:

SD-3 Minimize Impervious Area  Yes  No  N/A
Discussion / justification if SD-3 not implemented:

SD-4 Minimize Soil Compaction  Yes  No  N/A
Discussion / justification if SD-4 not implemented:

SD-5 Impervious Area Dispersion  Yes  No  N/A
Discussion / justification if SD-5 not implemented:

There are no significant areas of level vegetation to implement this BMP. All impervious areas are directed to a biofiltration pond.

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City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-5 Page 2 of 2, Form Date: March 15, 2016
Site Design Requirement Applied?
SD-6 Runoff Collection  Yes  No  N/A
Discussion / justification if SD-6 not implemented:

SD-7 Landscaping with Native or Drought Tolerant Species  Yes  No  N/A Discussion / justification if SD-7 not implemented:

SD-8 Harvesting and Using Precipitation  Yes  No  N/A Discussion / justification if SD-8 not implemented:

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City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 4/3/2023
Summary of PDP Structural BMPs Form I-6 (PDPs)
[March 15, 2016]
Project Identification
Project Name: RILLING ENTERPRISES CAPALINA APARTMENTS
Permit Application Number:

PDP Structural BMPs
All PDPs must implement structural BMPs for storm water pollutant control (see Chapter 5 of the BMP Design Manual). Selection of PDP structural BMPs for storm water pollutant control must be based on the selection process described in Chapter 5. PDPs subject to hydromodification management requirements must also implement structural BMPs for flow control for hydromodification management (see Chapter 6 of the BMP Design Manual). Both storm water pollutant control and flow control for hydromodification management can be achieved within the same structural BMP(s).

PDP structural BMPs must be verified by the local jurisdiction at the completion of construction. This may include requiring the project owner or project owner's representative and engineer of record to certify construction of the structural BMPs (see Section 1.12 of the BMP Design Manual). PDP structural BMPs must be maintained into perpetuity, and the local jurisdiction must confirm the maintenance (see Section 7 of the BMP Design Manual).

Use this form to provide narrative description of the general strategy for structural BMP implementation at the project site in the box below. Then complete the PDP structural BMP summary information sheet (page 3 of this form) for each structural BMP within the project (copy the BMP summary information page as many times as needed to provide summary information for each individual structural BMP).

Describe the general strategy for structural BMP implementation at the site. This information must describe how the steps for selecting and designing storm water pollutant control BMPs presented in Section 5.1 of the BMP Design Manual were followed, and the results (type of BMPs selected). For projects requiring hydromodification flow control BMPs, indicate whether pollutant control and flow control BMPs are integrated or separate.

Step 1, the project was divided up and evaluated at
the DMA scale. Each DMA area was classified as
Self-Treating, Self-Retaining, Self-Mitigating or Draining to a Best Management Practice (BMP).

Step 2, For the DMAs that drain to BMPs, the appropriate runoff factors were applied to each area and the required Design Capture Volume (DCV) of each sub area calculated. For this project, Harvest and reuse is not considered feasible.

Step 3, due to the impermeability of the underlying soils, (soil type C & D), infiltration BMPs are not feasible.

Step 3A&B for the no infiltration condition leads to section 5.5.3 which is the Biofiltration BMP category. The various sizing methods included in Appendix B.5 were followed and the entire DCV can be treated within the proposed BMPs.

Step 4, each Biofiltration area is sized in accordance with the fact sheet BF-1 found in appendix E of the BMP design manual. This project requires hydromodification controls, so the Biofiltration units accomplish both storm water treatment and flow control mitigation in an integrated design. (Continue on page 2 as necessary.)

I
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Fo rm I-6 Page 2 of 6, Form Date: March 15, 2016
(Page reserved for continuation of description of general strategy for structural BMP implementation at the site)

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-6 Page 3 of 6 (Copy as many as needed) Form Date: March 15, 2016 Structural BMP Summary Information
(Copy this page as needed to provide information for each individual proposed structural BMP) Structural BMP ID No. BMP-A
Construction Plan Sheet No. SHEET 7
Type of structural BMP:
 Retention by harvest and use (HU-1)
 Retention by infiltration basin (INF-1)
 Retention by bioretention (INF-2)
 Retention by permeable pavement (INF-3)
 Partial retention by biofiltration with partial retention (PR-1) Biofiltration (BF-1)
Biofiltration with Nutrient Sensitive Media Design (BF-2)  Proprietary Biofiltration (BF-3) meeting all requirements of Appendix F  Flow-thru treatment control with prior lawful approval to meet earlier PDP requirements (provide BMP type/description in discussion section below)
 Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or biofiltration BMP (provide BMP type/description and indicate which onsite retention or biofiltration BMP it serves in discussion section below)
 Flow-thru treatment control with alternative compliance (provide BMP type/description in discussion section below)
 Detention pond or vault for hydromodification management  Other (describe in discussion section below)

Purpose:
 Pollutant control only
 Hydromodification control only
 Combined pollutant control and hydromodification control  Pre-treatment/forebay for another structural BMP
 Other (describe in discussion section below)

Who will certify construction of this BMP?
Provide name and contact information for the
party responsible to sign BMP verification forms if
required by the [City Engineer] (See Section 1.12 of
the BMP Design Manual)
The Engineer o f Work
Robert Dentino
Excel Engineering
440 State Place
Escondido, CA 92029

Who will be the final owner of this BMP?

Project Home Owner’s Association
Who will maintain this BMP into perpetuity?

Project Home Owner’s Association
What is the funding mechanism for maintenance?

Project Home Owner’s Association

Who will be the final owner of this BMP?

Project Home Owner’s Association
Who will maintain this BMP into perpetuity?

Project Home Owner’s Association
What is the funding mechanism for maintenance?

Project Home Owner’s Association

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Form I-6 Page 4 of 6 (Copy as many as needed) Form Date: March 15, 2016 Structural BMP Summary Information
(Copy this page as needed to provide information for each individual proposed structural BMP) Structural BMP ID No. BMP-C (Storage Pipe)
Construction Plan Sheet No. SHEET 7
Type of structural BMP:
 Retention by harvest and use (HU-1)
 Retention by infiltration basin (INF-1)
 Retention by bioretention (INF-2)
 Retention by permeable pavement (INF-3)
 Partial retention by biofiltration with partial retention (PR-1)  Biofiltration (BF-1)
 Biofiltration with Nutrient Sensitive Media Design (BF-2)  Proprietary Biofiltration (BF-3) meeting all requirements of Appendix F  Flow-thru treatment control with prior lawful approval to meet earlier PDP requirements (provide BMP type/description in discussion section below)
 Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or biofiltration BMP (provide BMP type/description and indicate which onsite retention or biofiltration BMP it serves in discussion section below)
 Flow-thru treatment control with alternative compliance (provide BMP type/description in discussion section below)
 Detention pond or vault for hydromodification management  Other (describe in discussion section below)
Hydromodification and Hydrology Detention
Purpose:
 Pollutant control only
 Hydromodification control only
 Combined pollutant control and hydromodification control  Pre-treatment/forebay for another structural BMP
 Other (describe in discussion section below)
Hydromodification and Hydrology Detention
Who will certify construction of this B MP?
Provide name and contact information for the
party responsible to sign BMP verification forms if
required by the [City Engineer] (See Section 1.12 of
the BMP Design Manual)
The Engineer o f Work
Robert Dentino
Excel Engineering
440 State Place
Escondido, CA 92029

Who will be the final owner of this BMP?

Project Home Owner’s Association
Who will maintain this BMP into perpetuity?

Project Home Owner’s Association
What is the funding mechanism for maintenance?

Project Home Owner’s Association

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 4/3/2023
Form I -6 Page 4 of 6 (Copy as many as needed) Form Date: March 15, 2016 Structural BMP Summary Information
(Copy this page as needed to provide information for each individual proposed structural BMP) Structural BMP ID No. BMP-D (Vegetated Swale)
Construction Plan Sheet No. SHEET 7
Type of structural BMP:
 Retention by harvest and use (HU-1)
 Retention by infiltration basin (INF-1)
 Retention by bioretention (INF-2)
 Retention by permeable pavement (INF-3)
 Partial retention by biofiltration with partial retention (PR-1)  Biofiltration (BF-1)
 Biofiltration with Nutrient Sensitive Media Design (BF-2)  Proprietary Biofiltration (BF-3) meeting all requirements of Appendix F  Flow-thru treatment control with prior lawful approval to meet earlier PDP requirements (provide BMP type/description in discussion section below)
 Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or biofiltration BMP (provide BMP type/description and indicate which onsite retention or biofiltration BMP it serves in discussion section below)
 Flow-thru treatment control with alternative compliance (provide BMP type/description in discussion section below)
 Detention pond or vault for hydromodification management  Other (describe in discussion section below)
Hydromodification and Hydrology Detention
Purpose:
 Pollutant control only
 Hydromodification control only
 Combined pollutant control and hydromodification control  Pre-treatment/forebay for another structural BMP
 Other (describe in discussion section below)
Green street infrastructure reduces stormwater runoff and helps improve water quality. Green streets provide source control of stormwater by biofiltration, and limit stormwater transport and pollutant conveyance to the collection system through storage layer and filter media. Per County of San Diego 2020 BMP Manual, green streets restore predevelopment hydrology to the extent possible by slowing the runoff down and allowing for infiltration; and provide environmentally enhanced roads.

Who will certify construction of this B MP?
Provide name and contact information for the
party responsible to sign BMP verification forms if
required by the [City Engineer] (See Section 1.12 of
the BMP Design Manual)
The Engineer o f Work
Robert Dentino
Excel Engineering
440 State Place
Escondido, CA 92029

Who will be the final owner of this BMP?

Who will maintain this BMP into perpetuity?

What is the funding mechanism for maintenance?

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
ATTACHMENT 1

BACKUP FOR PDP POLLUTANT CONTROL BMPS

This is the cover sheet for Attachment 1.

Indicate which Items are Included behind this cover sheet:

Attachment
Sequence
Contents Checklist
Attachment 1a DMA Exhibit ( Required )

See DMA Exhibit Checklist on the back of
this Attachment cover sheet.


Included

Attachment 1b Tabular Summary of DMAs Showing
DMA ID matching DMA Exhibit, DMA
Area, and DMA Type (Required)*

*Provide table in this Attachment OR on
DMA Exhibit in Attachment 1a


Included on DMA Exhibit in
Attachment 1a
 Included as Attachment 1b,
separate from DMA Exhibit

Attachment 1c Form I -7, Harvest and Use Feasibility
Screening Checklist (Required unless the
entire project will use infiltration BMPs)

Refer to Appendix B.3-1 of the BMP
Design Manual to complete Form I-7.


Included
 Not included because the entire
project will use infiltration BMPs

Attachment 1d Form I -8, Categorization of Infiltration Feasibility Condition (Required unless
the project will use harvest and use
BMPs)

Refer to Appendices C and D of the BMP
Design Manual to complete Form I-8.


Included
 Not included because the entire
project will use harvest and use BMPs

Attachment 1e Pollutant Control BMP Design
Worksheets / Calculations (Required)

Refer to Appendices B and E of the BMP
Design Manual for structural pollutant
control BMP design guidelines


Included

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Use this checklist to ensure the required information has been included on the DMA Exhibit:

The DMA Exhibit must identify:

 Underlying hydrologic soil group
 Approximate depth to groundwater
 Existing natural hydrologic features (watercourses, seeps, springs, wetlands)  Critical coarse sediment yield areas to be protected
 Existing topography and impervious areas
 Existing and proposed site drainage network and connections to drainage offsite  Proposed demolition
 Proposed grading
 Proposed impervious features
 Proposed design features and surface treatments used to minimize imperviousness  Drainage management area (DMA) boundaries, DMA ID numbers, and DMA areas (square footage or acreage), and DMA type (i.e., drains to BMP, self-retaining, or self-mitigating)  Potential pollutant source areas and corresponding required source controls (see Chapter 4, Appendix E.1, and Form I-3B)
 Structural BMPs (identify location, type of BMP, and size/detail)

C O M M E R C I A L
EV2
EV3
EV3
EV3
EV3
EV3
EV3
EV3
EV3
EV2
EV2
EV2
EV2
EV2
EV1
EV1
EV1
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV2
EV1EV1EV1EV1EV1EV1EV1EV1EV1EV1EV1EV1EV1
EV2EV2EV2EV2EV2EV2
EV2EV2EV2EV2EV2
0/STANCE FROM TOE

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CLEAN OUT PLANllNC

APRON FOR LANO
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Oif'RFLOW TC TO FS OF !HE BASIN
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APPLICABLE
MUL
IMP
6"
2' MIN

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4" AC OVER 7.5"

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-~GINEERED
J=""-~~ l~ MEDIA
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SIDEWALK TO GRA, _:§l~rn LAYER
E NOTE 9
UNCOMPACTED SUBGRADE AASHTO #57
GRAVEL
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TYPICAL SECllON NOT TO SCALE
A !/8. !HICK L-BRACKET
(4- L-BRACKETS TOTAL)
59a20 TC
8 I.,._
M.7R S!RUCllJRE TO BE Vlli HOPE_--i
SHEET, l/2' !HICK, OR WI ~LENT
12" 00/IN
S!REAM PIPE
48"x48u

CATCHBAS/N
' .! - -
A
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CATCHBAS/N SIZE
Jo"KJo"
0 M.7R S!R. CllJ, f' TO 8£ Hl!EC HOPE
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PIPE OUT PER li/BLE 24 " 12" PIPE
FL PER PLANS 583. 77 FL
STAINLESS S!EEL 80!. T -:..___p~-~~:."./;;~L _ _J.C:C:f===::="=' (4 BOLTS PER L -BRACK£!)
SE'ClltWB-8
I/ER ctWTRa. SllifK:1UE FUN IIEW NOT TO SCALE
a5'
--

NOT TO SCALE
59a20 TC
J'
M.7R S!RUCllJRE TO Hl!EC HOPE SHEET,
I /5' !HICK, OR QUI LIEN T
SE'ClltWA-A

NOT TO SCALE
lfJ HOLES (2 TO li/L)
!/8' 111/CK L-BRACKET
I/ER Cf.WTRa. SllifK:1UE
/J£TM.

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. a25•
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NOT TO SCALE
ff ll'JVJJll'.J SllilJCllliENOTE
!HE PURPOSE OF !HIS STRUCllJRE IS FOR AOO/llONAL
HYOROMOOIRCAllON FLOW CONTROL SEPARA!E FROM TYPICAL
8/0F/LlRAllON FLOW MODEL/NC
COMPAC!EO SOIL~ "583. 49 FL TO 0-2.

PERMANENT WATER QUALl1Y
TREATMENT FACILl1Y

KEEPING OUR WATER WAYS CLEAN

MAINTAIN WITH CARE - NO MODIFICATIONS WITHOUT AGENCY APPROVAL DETAIL

WATER QUALITY SIGN- PLACED AT

EACH BIOFILTRATION BASIN
NOTE: ALL BIOFILTRATION AREAS WILL

HAVE A SIGN POSTED TO BE
VISIBLE AT ALL TIMES.
1~"11
1--im,,
31:: :---®
-2
' 1------'7 -- :

I_
1:-: =,
I~ '
1-.
~
0§'15' !/TE fE,fDRS
• lllE APPRO)(/MA!E OEPlll TO CROUNOWA!ER IS
CREA !ER !HEN 20 FEET.
• !HERE ARE NO NAllJRAL HYOROLOC/C FEAllJRES ON
!HE Sl!F.
• BASED ON WA!ERSHEO MAPP/NC OF PO!ENllAL
CR/llCAL COARSE SEDIMENT YIELD AREAS (CCSYA),
!HERE ARE NO CCSYA LOCA!EO IYl!H/N !HE PROJECT
BOUNDARY OR !R/BUTARY TO !HE RUNOFF BYPASSED
AROUND !HE S/!F.
• !HE Sl!E PROPOSES TO CONNECT !HE £)(!Sl1NC CURB
& CUT/ER LOCA!EO ON MISSION ROAD ON !HE
NOR!H S/0£ OF !HE PROJECT.
v~ 120· v«w ·
6'" PVC PIPE PERFORATION

LAYOIJT DETAIL

NOT TO SCALE
I --~ --===tf - t
I ~=.,5~...--..., ~ (t-03 6 I ~r.- - , I -
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E
TOP OF BASIN Oif'RFLOW S!RUCllJRE ~~
CLEAN OUT ANO MAIN!ENANCE ACCESS---..____ ~~
-~~L..

FS ELEV
-.--;--,- .
; i
PER PLAN ..__ • ,. '<
J' ilCEO'
~ MULCH
/JKl6.1RAlltW /JASN A /J£TM.

NOT TO SCALE
LEGEND

OMA BOUNDARY
- -
WA!ER WAL/TY EFFECllif' AREA
*PERl40US AREA AMENDED SOIL
'NO!F.· ALL LANDSCAPED AREAS IYILL 8£ PLAN!EO IYl!H
AMENDED SOILS SO-F £)(C£PT FOR 8/0RL!RAllON BASINS:

DETAIL
iVO DIJIIPING'" AT CATCH BASINS
NO!F.· ALL CATCH BASINS IYl!H CRA!ES SHALL
8£ S!ENCILEO IYl!H CITY REQUIRED !!EM PER
ABOif' DETAIL (OAS MANUFACllJR/NC j'SOO OR
EQUIVALENl}.

SUMMARY OF PERVIOUS AND IMPERVIOUS AREA
DMA-3
DMA-4

PERVIOUS AREA (SF) IMPERVIOUS AREA (SF)
13,897
1,850
1,287
I
81,594
5,901
34,286
4,853
I
H
(GRASS AREA)
!
J
FLlER FABRIC
(WHERE Rm HD

BY ENGNER)
111D.

I
I,
I
OE1EN1ltW Pll'E I/ER CROSS SE'ClltW
I/ER PUT£ I I/ER PUT£ 2

NOT TO SCALE NOT TO SCALE
fffUTEl(OlEJ
M.7R PLA!E 2 IS USED TO BLOCK IYA!ER IN OE!ENllON PIP£
AIIENDEO SGYL NOlES
Sa'L IS AMENDED IYl!H 2 INCHES OF MEO/A
M/)(£0 INTO !HE TOP 6 INCHES OF /N-S/llJ
SOILS, AS NEEOEO, TO PROMO!E PLANT
CRO/YlH (OPllONAL) FOR ENHANCED
PO!.LUTANT CON!ROL, 2 FEET OF MEO/A CAN
8£ USED IN PLACE OF !NS/llJ SOILS:

NJQWIM' OZ (IKll'
111£ HYOROLOC/CAL SOIL CROUP FOR !HIS
S/!E IS TYPE C ANO TYPE 0
WAlER QUALITY BASIN INSTALLAllON NOlES:

I. J INCHES OF Co.cONUT CO/R.

2. AN UNOERORAIN CLEANOUT IYl!H A MINIMUM 6-/NCH 0/AME!ER ANO LOCKABLE CAP IS PLACED Eif'RY 250 TO JOOFEET AS RE()IJ!REO BASED ON UNOERORAIN LENC!H.

3. if'GETAllON USED SHOULD 8£ SU/li/BLE FOR 111£ CL/MA!E PER LANDSCAPE PLANS

4. RL!ER COARSE IS A MINIMUM OF 6 INCHES PR0/40£0 IN TIIV SEPARA!E J INCH LA i'cRS: !HE TOP LA i'cR SHALL 8£ MAO£ OF AS1M CJJ CHOKER SANO ANO 111£ BOTTOM LA!'cR 8£ OF AS1M NO. 8 ACCRECA!F. MARKERS STAKES SHALL 8£ USED TO ENSURE UNIFORM LIFT 111/CKNESS:

5. AASHTO Na 57 STONE OR CLASS 2 PERMEABLE PER CAL TRANS SPECIRCAllON 68-1.025 IS RECOMMENDED FOR !HE ACCRECA!E STORAGE LA i'cR. IYASHEO, OPEN-CRAOEO CRUSHED ROCK MAY 8£ USED, HOIYEif'R, A 4 INCH MINIMUM IYASHEO PEA CRA vfZ RL !ER COURSE LA i'cR AT !HE TOP OF 111,

CRUSHED ROCK IS REOUIREO

6. IMPERMEABLE LINER SHALL 8£ INSTALLED /lf-lEN 111£ 8/0F/LlRAllON BASIN IS IY/111/N 10 FEET OF RETAIN/NC WALLS OR BU/LO/NC FOUNOA llONS, OR AS RECOMMENDED BY !HE SOILS ENC/NEER, OR REQUIRED BY !HES£ PLANS:

IMPERMEABLE LINER SHALL 8£ JO MIL !HICK (PER COUNTY OF SAN 0/ECO CREEN STREETS OES/CN STANDARD ORAIYINC CS-3.00 ANO COUNTY CREEN S!REETS SUPPLEMENT TO CAL !RANS SPECIRCAllONS 20-11.088) CONRCUREO TO ENllREL Y ENCOMPASS !HE SIDES OF !HE WA!ER QUALITY BASIN.

7. IMPERMEABLE LINER 8£ CONSTRUC!EO IN COMPLIANCE IYl!H !HE COUNTY OF SAN 0/ECO CREEN STREETS SUPPLEMENT TO CAL TRANS SPECIRCAllONS 20-11.088.

8. 8/0RL !RA 110N SOIL MEO/A LA i'cR (BSM) SHALL CONSIST OF 60% TO 80% BY VOLUME SANO, UP TO 20% BY VOLUME TOPSOIL, ANO UP 20% BY VOLUME COMPOST (PER CITY OF SAN MARCOS BMP OES/CN MANUAL FEBRUARY 2023 APPEND/% F.J SECllON 803-2 BLENOEO BSM CR/!ERIA ANO !ESllNC REQUIREMENTS) BSM SHALL 8£ LICH!l Y COMPAC!EO ANO PLACED IN LOOSE LIFTS APPRO)(!MA !ELY 12 INCHES TO ENSURE REASONABLE SETllEMENT /YI/HOUT £)(C£SSlif' COMPACllON (PER CITY OF SAN MARCOS BMP OES/CN MANUAL FEBRUARY 2023 APPEND!)( F.J SECllON 803-6 OEL/if'RY, STORAGE, HANDLING, ANO PAYMENl}. BSM PERMEABILITY REWIRES 8-24 !NCHES/1-IOUR FOR BMPS /YI/HOUT OUllET CON!ROL; 15-80 INCHES/1-IOUR FOR BMPS IY/111 OUllET CONTROL; TESllNC IS REWIRED TO OEMONSTRA 1E (PER CITY OF SAN MARCOS BMP OESICN MANUAL FEBRUARY 2023 APPEND/)( F.J SECllON 803-8 SUMMARY).

9. 111£ ACCRECA!E STORAGE LA!'cR SHALL 8£ COMPAC!EO IN ACCORDANCE IY/111 SOILS ENC/NEER's RECOMMENOA llONS:
ta 0/tERFLOW S!RUCllJRE TO HAif' A MINIMUM OF 12 INCHES OF FREEBOARO.

II. ALL LINER INSTALLAllONS, RELO IYELO/NC OF SEAMS, ANO OBSERVAllON OF SOIL Ml)( PLACEMENT SHALL REQUIRE SPECIAL INSPECllON BY !HE PROJECT CEO!ECHNICAL ENC/NEER OR O!HER OUAL/REO PERSON. A LETTER CERllFYINC PROPER INSTALLAllON SHALL 8£ PR0/40£0 TO !HE ENC/NEER OF RECORD TO ACCEPli/NCE OF !HE FACIL/11£S:

12. SPECIAL INSPECllON SHALL 8£ REOUIREO FOR CONS!RUCllON OF ALL 8/0RLTRAllON BASINS: INSPECllON SHALL 8£ PERFORMED BY A QUAL/REO IN0/140UAL (SUCH AS.· ENC/NEER OF RECORD, QSO) !NSPECllON SHALL

INCLUDE
• vVi'/RCA 110N OF Oif'RALL DIMENSIONS PRIOR TO PLACEMENT OF MATERIALS,·
• PLACEMENT OF !HE LINER, IF REWIREO,·ANO SEAMS OR PENE!RA llONS • PLACEMENT OF !HE CRA vfl, RL !ER MA !ERIALS, ANO RL !ER MEO/A; • ALL INLET ANO OUllET S!RUCllJRES INCLUO/NC UNOERORA/NS, IF REQUIRED.
• CON!RACTOR SHALL TAKE P/CT/JRES AT EACH STACE OF
INSTALLAllON ANO SUBMITTED TO ENGINEER FOR if'R/RCAllON OF INSTALL.

INSPECTOR SHALL 8£ C/if'N A MINIMUM OF 48 HOURS PRIOR TO !NSPECllON.

UPON COAIPLEllON !HE INSPECTOR SHALL PROl40£ A CERllRCAllON TO !HE ENC/NEER OF /YORK.

13. PROPOSED MA!ERIALS, SUCH AS ACCRECA!F, RL!ER MAIER/AL, ANO RL!ER MEO/A SHALL 8£ SUBMITTED TO !HE ENC/NEER OF /YORK FOR APPROVAL.

I
H
(RIGID P\'IIT.)
i---c---i • BEDOIN (CLASS I CIR I IIA'IEIIAIJ
• 4" 1111. FllR 1r - 24• Pl'E
• 8" 1111. FllR :,t' - IIO" Pl'E

1. AU. REFERENCES TO a.ASS I Cit I IIATEIIAL ARE PER ASIII DD21 -sTNIJARD PRACTICE FOR UNIJEIIGllOUND NSTALLATIDN OF THERIIIJII.AS1IC PFE mt SE1ERS AND 011ER GRA\flY FLOW APPUCAllON!r', LATEST EDITION.

2. AU. RE1Df1IDN AIIJ DETEN110N S'1S1EMS SHAU. BE INSTALLED .. ACCCRJANCE 11111 AS1II 02321, LATEST EDl1DI AND 1HE WFM:'IURER'S PUIIJStED NSTALLATKII AIDFIINF!l .S. liEASIES SH0U.D IE TAKEN 10 PRNNT 1IE IIQRATION OF NATM FIIES INTO 1IE BAaCF1.L IIA'IERIAL. 1tEN RECIJIRED. SEE AS111 DD'I.

4. 9 JfB fWC A GED1EX1LE FMIIC IIAY BE USED AS SPECFED BY 1IE ENGINEER 10 PREVENT 11£ MIGRA1KIN OF FINES FRC11 1HE NA'IM SOL INTO THE SELECT BAaCFLL IIA'IEIUL

5. FQNJ!JQI; MERE 1IE TRENal eomJII IS UNSTAIIE. 1IE CXJN1RAC10R SHAU. EXCAYAlE TO A DEPTH REQUIE> BY 11£ ENGll&R AND REPLACE lt'IH SUTAIILE MATERIAL AS SPECFED BY 11£ ENG1EER. AS AN Al.lERNA'IM AIIJ AT 11£ IIISaEKIN OF 1IE DESIGN ENC1NEER. 1HE 1REIOI eomJII IIAY BE STAIII.IZED USING A GED1EX11.E MATERIAL SCALE: !'-50" I. ~ SUTABLE MATERIAL SHAU. IE a.ASS I CR IL 1HE CClf1RAC1t'IR SHAU. PROWJE DOCI.IIENTATIDN mt MATERIAL SPECFICATICII 10 ENGl&R. I.KESS cmER11SE N01ED BY 11E ENC1NEER. •1111 BEDD11G 111Q(NESS stALL BE 4 (100mm) mt 4•-24• (1m11e: IDD.mi): .. (1110mm) mt Yf-flf (7DOmm-1!10Gnwn).

SOURCE CONTROL REQUIREMENT
IEI!~I
SC-1 PREVENTION OF ILLICIT DISCHARGES

ENGINEERING
SC-2 STORM DRAIN STENCILING OR SIGNAGE
LAND PLANNING• ENGINEERING • SUR\Ei1NG
440 SIAlE PLAC~ ESCONDIDO, CA 92029 SC-5 PROTECT TRASH STORAGE PH (760)745-8118 FX (760)745-1890

SOURCE CONTROL

NODE IMPLEMENTAION

EFFECTIVE IRRIGATION WILL BE IMPLEMENTED AND

VEHICLE WASHING IS PROHIBITED
STENCIL EVERY INLET WITH PROHIBITIVE WORDS: "NO
DUMPING! DRAINS TO WATERWAYS" AND "NO CONTAMINE"
IN SPANISH.

TRASH ENCLOSURE WILL BE PROTECTED BY LID OR BE

WALLED WITH ROOF TO AVOID STORMWATER GET
OVA
NAVE
OAIA-!
OMA-2
OI.IA-J
OAIA-4.

OVA
lrPE
7RAINS Ti
Bl.IP
•JRAINS fl
Bl.IP
•JRAINS Tl.

BAIP
C>lll
Wll~~!.7.NI
Bl.IP lrPEOF8AIP NAVE
Bl.IP-A 8/0RL !RA llON
8AIP-8 8/0RL !RA llON
w,cc" 0/f(,C I
8AIP-O /tECETATEO
ewur
- -
CAPAL/NA RIJ..

STR//Cl/lRAL BIO-BASIN S/1I.IMARY TABLE
Al A2 AJ 8 EfFECll/tE (INCH} C
AREA WA!ER (INCH} (INCH} (INCH} (INCH} TOP OF CLEAN 1/PPER (SOFT} 0/IALITY+ BASIN I.IEOIA AIIILCH' 0//T OR/RCE
22J8 g J2.52 6 - 18
962 g 21 6 - 18
8J9 6 12 - - 18
- - - - - -
0 50

BOX RISER ORIRCES
0 E 0/tERflOW 0/AI.IE!ER
(INCH} (FT} STR//Cl/lRE /I.IPERI.IEABIE
1/PPER LOllf'R LINER? Gl'Alfl OFFSET SIZE (INCH} (INCH} (INCHES} 12 J.75 J6XJ6 - f.J75 ITT
12 2.25 J6XJ6 - 0.82 ITT
12 f.5 - - - SIOES ONLY
- - - - - -
CONTAMINATED *NO!F.· IYA!ER QUALITY PONO/NC= Al- J" OF MULCH (MULCH IYILL 8£ CONSIS!EO OF NU!R/ENT SENS/llif' MAIER/AL SUCH AS COCONUT COIR PER BF-2) 100

7. NIDN 8!'7fl I" SUITAIILE IIATERIAL SHAU. BE a.ASS I Cit I .. 11£ PFE ZCltE EX1DIJIG NOT LESS THAN 1• NDiE. CR0111 OF PIPE. 11£ CXIN1RACTClt stAU. PRO\IE DOCUIIENTATICII mt IIAlEIIAl 5PECIFICATIDN TO ENGINEER. IIAlEIIAL SHAU. BE NSTAUED AS REQUIEJ .. AS111 02321, LATEST EDl'IDI, I. 19I11N QM8; IINIIUII aMR O'tU AU. REllEIION/DE1EN110N S'l'S1EIIS N IDl-lRAFFIC APPUCAW (GRASS CR I.AtlJSCAPE -'REAS) IS 1r FRCll 10P OF PFE TO GROOII) SIIIFACE. ADD11K1W. aMR MAY BE REQURED 10 PRNNT FLDATAlDI. RR 1RAFFIC APPLICA'IIDNS, IIIIIUI CCMR IS 1r UP 10 YI' DIAIIE1ER PFE AND 24• OF CCMR mt 42" - Pl/' DIAIIE'IER PIP£. IIEASllED FRC11 'RIP OF PPE 10 eomJII OF FlEJIII.E PA\UENT CR 10 10P OF RKi1D PA\9ENT.

NOMINAL NOMINAL T'IPICAL N~AL TIPICAL SIDE H H
DIAMElER O.D. SPAaNG "it' SPAaNG "r:' WAIL "X" (NDN-TRAFFIC) (lRAFFIC) r1:zoll.nm1
5,J
11372mm) 25 1635mm) 78.5 l1994mml 18 1457mm) /~ml 2~ 1610mml clCllt a. INC. • CLASS I BAa<FIU. REQUIRED AROUND B09 DIAMElER FITllNGS.

AIMNCED IRVttGE S"l'SIEIIS. INC. C-ADr> HAS PREPARED 1t1S DErA1.. MSED ON lll'0RIMTION PRCMJED 10 ADS. 1H1S lltAWING IS INTINllED TD DEPET THt COMiloNENrs AS REQUESTED. ADS I-MS NIJr PEAF0RIED Nit ENGINEERING OR DESIGN REY
REY;
SEIMCES FOR ntB PROJECT, NOR HAS MIS IN:IEPENDENrl.Y VERIFED THE W0RIIATDI 81.PPUED. n£ NSTM.lATION DETM.S PJIODCI' PRD't'IDED HEREIN II£ GENEIW. RECOMIIEND\1ION AND M£ NIJI' SPB:FIC FOR 1HIS PRO.Er. THE IJESNIN EN91NEER stW.L RE\1EW 'THESE DETM.S PIIOR TO CONSIRUCIION. IT IS THE DESIGN EIIGaJWa iEFONSIIIIIJIY TO ENSURE 1t£ DErA1.S LOCA.'IIIDI IIEICRIP1IIN

WWWIICM
PRIMDED HEREIN IEEl'S OR EXCEEDS THE APPLr.AII.E NA110tML. STA1E, OR lDCAl. REQLIIEENIS AND TO ENSlE 'THAT THE DErMS PRIMDED HEREIN IIIIE. ACCEPl'MI.E FOR MS PROJECT. DRAlltG Nl.l&R: DRAWINGf BY REWA1E a«'D
BY IIIA/00/'f'( CHC'D
------
4l40 1IUIIMI .....
---

RILL/NC ENTERPRISES CAPAL/NA APARTMENTS OMA EXHIBIT
Attachment 1B
Tabular Summary of DMA's
Attachment 1C
Harvest and Use Feasibility
Screening Checklist
Appendix I: Forms and Checklists

I-26 February 2016
Harvest and Use Feasibility Checklist Form I-7

1. Is there a demand for harvested water (check all that apply) at the project site that is reliably present during the wet season?
Toilet and urinal flushing
Landscape irrigation
Other:______________

2. If there is a demand; estimate the anticipated average wet season demand over a period of 36 hours.

Guidance for planning level demand calculations for toilet/urinal flushing and landscape irrigation is provided in Section B.3.2.
[Provide a summary of calculations here]

3. Calculate the DCV using worksheet B-2.1.

DCV = __________ (cubic feet)
3a. Is the 36 hour demand greater
than or equal to the DCV?
 Yes /  No
3b. Is the 36 hour demand greater than

0.25DCV but less than the full DCV?
 Yes /  No

3c. Is the 36 hour demand
less than 0.25DCV?
 Yes
Harvest and use appears to be
feasible. Conduct more detailed
evaluation and sizing calculations
to confirm that DCV can be used
at an adequate rate to meet
drawdown criteria.

Harvest and use may be feasible.

Conduct more detailed evaluation and
sizing calculations to determine
feasibility. Harvest and use may only be
able to be used for a portion of the site,
or (optionally) the storage may need to be
upsized to meet long term capture targets
while draining in longer than 36 hours.

Harvest and use is
considered to be infeasible.

Is harvest and use feasible based on further evaluation?  Yes, refer to Appendix E to select and size harvest and use BMPs.  No, select alternate BMPs.

□
□
□
c::> ~
~ i ,a.

Attachment 1D
Categorization of Infiltration
Feasibility Condition
Categorization of Infiltration Feasibility Condition Worksheet I-8 Part 1 - Full Infiltration Feasibility Screening Criteria Would infiltration of the full design volume be feasible from a physical perspective without any undesirable consequences that cannot be reasonably mitigated?
Criteria Screening Question Yes No
1 Is the estimated reliable infiltration rate below proposed facility locations greater than 0.5 inches per hour? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.2 and Appendix D.

Provide basis:

Site specific infiltration testing has not been perofmed for this site. However, according to the "Preliminary Geotechnical Investigation and Grading Plan Review for Capalina Apartments Development" Report No. 2203-09-B-3 by AGS dated December 12, 2022, the earth materials present at the site include surficial deposits of undocumented artificial fill and topsoil/alluvium consisting of clayey sands and sandy clays overlying Santiago Formation interbedded silty sandstone, clayey sandstone, and sandy claystone. Also, the proposed basin bottoms will be in design fill conditions. Fill derived from onsite materials is expected to have negligible infiltration rates. Based on our previous experience with similar materials, the estimated infiltration rate of the topsoil/alluvium, compacted fill, and Santiago Formation will be on the order of 0.1 inches per hour or less.
2 Can infiltration greater than 0.5 inches per hour be allowed without increasing risk of geotechnical hazards (slope stability, groundwater mounding, utilities, or other factors) that cannot be mitigated to an acceptable level? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.2.

Provide basis:

Estimated infiltration rates at the project site are below 0.5 inches/hour: as such this screening question does not control the feasibility of infiltration at the project site and is not applicable.

Worksheet C.4-1 Page 2 of 4
Criteria Screening Question Yes No
3 Can infiltration greater than 0.5 inches per hour be allowed without increasing risk of groundwater contamination (shallow water table, storm water pollutants or other factors) that cannot be mitigated to an acceptable level? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.3.

Provide basis:

Estimated infiltration rates at the project site are below 0.5 inches/hour. Infiltration at a rate greater than 0.5 inches/hour is not considered feasible for this project. As such, this screening question does not control the feasibility of infiltration at the project site.
4 Can infiltration greater than 0.5 inches per hour be allowed without causing potential water balance issues such as change of seasonality of ephemeral streams or increased discharge of contaminated groundwater to surface waters? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.3.

Provide basis:

Estimated infiltration rates are less than 0.5 inches/hour. Infiltration at a rate greater than 0.5 inches/hour is not considered feasible for this project. As such, this screening question does not control the feasibility of infiltration at the project site. Final determination should be made by the project design engineer. □ ~
□ ~
Part 1
Result*
If all answers to rows 1-4 are “Yes” a full infiltration design is potentially feasible.

The feasibility screening category is Full Infiltration If any answer from row 1-4 is “No”, infiltration may be possible to some extent but would not generally be feasible or desirable to achieve a “full infiltration” design.

Proceed to Part 2
No,
Procced
to part 2
*To be completed using gathered site information and best professional judgment considering the definition of MEP in the MS4 Permit. Additional testing and/or studies may be required by the City Engineer to substantiate findings.

Worksheet C.4-1 Page 3 of 4
Part 2 – Partial Infiltration vs. No Infiltration Feasibility Screening Criteria Would infiltration of water in any appreciable amount be physically feasible without any negative consequences that cannot be reasonably mitigated?
Criteria Screening Question Yes No
5 Do s oil and geologic conditions allow for infiltration in any appreciable rate or volume? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.2 and Appendix D.

Provide basis:

The estimated infiltration rate for the site is 0.1 inches per hour or less (below 0.5 inches/hour). In addition, the subsurface soils encountered are relatively dense and the bottom of the basins will be located in design fill.

Infiltration at the project site is anticipated to be "Partial" infiltration. It is anticipated that over the lifetime of the development
the infiltration rates will further diminish. It is our current understanding that an ‘appreciable’ infiltration rate is interpreted to be an infiltration rate of 0.01 in/hr or greater. Therefore, in consideration of the current interpretation, the project site locally does allow for infiltration in an ‘appreciable’ rate or volume. 6 Can Infiltration in any appreciable quantity be allowed without increasing risk of geotechnical hazards (slope stability, groundwater mounding, utilities, or other factors) that cannot be mitigated to an acceptable level? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.2.

Provide basis:

Infiltration is not considered feasible within the tested areas without significantly increasing the risk of geotechnical hazards such a lateral flow and/or groundwater mounding, which would impact future onsite structures and existing offsite improvements, including nearby residences, roadways and utility trenches.

Additionally, expansive soils have been identified onsite and test results presented in AGS's 12-12-22 report show expansion potentials of the upper soils that range from "very low" to "medium". On nearby sites, highly expansive beds have been identified in the Santiago Formation and may be present in the underlying formational materials. The onsite expansive soils will be subject to volume changes with the introduction of water. It is anticipated that the infiltration surface will be situated within the fill materials on Santiago Formation materials. Based on our previous experience in the project area, the formational soils/bedrock underlying the site are considered to have low to negligible permeability when saturated and are anticipated to diminish over time.
~ □
□ ~
Worksheet C.4-1 Page 4 of 4
Criteria Screening Question Yes No
7 Can Infiltration in any appreciable quantity be allowed without posing significant risk for groundwater related concerns (shallow water table, storm water pollutants or other factors)? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.3.

Provide basis:

Partial infiltration can be allowed without posing significant risk for groundwater related concerns, if the basin is loca
ted at least ten (10) vertically above seasonal high groundwater. Groundwater is not expected to be located within 10 feet of the proposed infiltration surfaces onsite nor is expected to rise to within 10 feet of the infiltration surface.
8 Can infiltration be allowed without violating downstream water rights? The response to this Screening Question shall be based on a comprehensive evaluation of the factors presented in Appendix C.3.

Provide basis:

Bas
ed on the project location and site conditions, it is not anticipated that allowing infiltration onsite will violate downstream water rights. Final determination should be made by the project design engineer. .

Part 2
Result
*
If all answers from row 5-8 are “Yes”, then partial infiltration design is potentially feasible. The feasibility screening category is Partial Infiltration.

If any answer from row 5-8 is “No”, then infiltration of any volume is considered to be infeasible within the drainage area. The feasibility screening category is No Infiltration.

No
Infiltration
*To be completed using gathered site information and best professional judgment considering the definition of MEP in the MS4 Permit. Additional testing and/or studies may be required by the City Engineer to substantiate findings
~ □
~ □
Attachment 1E
Pollutant Control BMP Design
Worksheets & Calculations
Category # Description i ii iii Units
1 Drainage Basin ID or Name DMA-1 DMA-2 DMA-3 unitless
2 85th Percentile 24-hr Storm Depth 0.69 0.69 0.69 inches 3 Impervious Surfaces Not Directed to Dispersion Area (C=0.90) 81,594 5,976 34,286 sq-ft 4 Semi-Pervious Surfaces Not Serving as Dispersion Area (C=0.30) sq-ft 5 Engineered Pervious Surfaces Not Serving as Dispersion Area (C=0.10) 13,897 1,775 1,287 sq-ft 6 Natural Type A Soil Not Serving as Dispersion Area (C=0.10) sq-ft 7 Natural Type B Soil Not Serving as Dispersion Area (C=0.14) sq-ft 8 Natural Type C Soil Not Serving as Dispersion Area (C=0.23) sq-ft 9 Natural Type D Soil Not Serving as Dispersion Area (C=0.30) sq-ft 10 Does Tributary Incorporate Dispersion, Tree Wells, and/or Rain Barrels? No No No yes/no 11 Impervious Surfaces Directed to Dispersion Area per SD-B (Ci=0.90) sq-ft 12 Semi-Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.30) sq-ft 13 Engineered Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.10) sq-ft 14 Natural Type A Soil Serving as Dispersion Area per SD-B (Ci=0.10) sq-ft 15 Natural Type B Soil Serving as Dispersion Area per SD-B (Ci=0.14) sq-ft 16 Natural Type C Soil Serving as Dispersion Area per SD-B (Ci=0.23) sq-ft 17 Natural Type D Soil Serving as Dispersion Area per SD-B (Ci=0.30) sq-ft 18 Number of Tree Wells Proposed per SD-A #
19 Average Mature Tree Canopy Diameter ft
20 Number of Rain Barrels Proposed per SD-E #
21 Average Rain Barrel Size gal
22 Total Tributary Area 95,491 7,751 35,573 sq-ft
23 Initial Runoff Factor for Standard Drainage Areas 0.78 0.72 0.87 unitless 24 Initial Runoff Factor for Dispersed & Dispersion Areas 0.00 0.00 0.00 unitless 25 Initial Weighted Runoff Factor 0.78 0.72 0.87 unitless 26 Initial Design Capture Volume 4,283 321 1,780 cubic-feet 27 Total Impervious Area Dispersed to Pervious Surface 0 0 0 sq-ft 28 Total Pervious Dispersion Area 0 0 0 sq-ft
29 Ratio of Dispersed Impervious Area to Pervious Dispersion Area n/a n/a n/a ratio 30 Adjustment Factor for Dispersed & Dispersion Areas 1.00 1.00 1.00 ratio 31 Runoff Factor After Dispersion Techniques 0.78 0.72 0.87 unitless 32 Design Capture Volume After Dispersion Techniques 4,283 321 1,780 cubic-feet 33 Total Tree Well Volume Reduction 0 0 0 cubic-feet
34 Total Rain Barrel Volume Reduction 0 0 0 cubic-feet
35 Final Adjusted Runoff Factor 0.78 0.72 0.87 unitless 36 Final Effective Tributary Area 74,483 5,581 30,949 sq-ft 37 Initial Design Capture Volume Retained by Site Design Elements 0 0 0 cubic-feet 38 Final Design Capture Volume Tributary to BMP 4,283 321 1,780 cubic-feet False
False
Automated Worksheet B.1: Calculation of Design Capture Volume (V2.0) Dispersion
Area, Tree Well
& Rain Barrel
Inputs
(Optional)
Standard
Drainage Basin
Inputs
Results
Tree & Barrel
Adjustments
Initial Runoff
Factor
Calculation
Dispersion
Area
Adjustments
No Warning Messages
Category # Description i ii iii Units
1 Drainage Basin ID or Name DMA-1 DMA-2 DMA-3 sq-ft
2 Design Infiltration Rate Recommended 0.000 0.000 0.250 in/hr 3 Design Capture Volume Tributary to BMP 4,283 321 1,780 cubic-feet 4 Is BMP Vegetated or Unvegetated? Vegetated Vegetated Vegetated unitless 5 Is BMP Impermeably Lined or Unlined? Lined Lined Unlined unitless 6 Does BMP Have an Underdrain? Underdrain Underdrain No Underdrain unitless 7 Does BMP Utilize Standard or Specialized Media? Standard Standard Standard unitless 8 Provided Surface Area 2,238 962 839 sq-ft
9 Provided Surface Ponding Depth 6 6 6 inches
10 Provided Soil Media Thickness 21 21 18 inches
11 Provided Gravel Thickness (Total Thickness) 12 12 12 inches 12 Underdrain Offset 3 3 inches
13 Diameter of Underdrain or Hydromod Orifice (Select Smallest) 1.38 0.82 inches 14 Specialized Soil Media Filtration Rate in/hr
15 Specialized Soil Media Pore Space for Retention unitless 16 Specialized Soil Media Pore Space for Biofiltration unitless 17 Specialized Gravel Media Pore Space unitless
18 Volume Infiltrated Over 6 Hour Storm 0 0 105 cubic-feet 19 Ponding Pore Space Available for Retention 0.00 0.00 1.00 unitless 20 Soil Media Pore Space Available for Retention 0.05 0.05 0.25 unitless 21 Gravel Pore Space Available for Retention (Above Underdrain) 0.00 0.00 0.40 unitless 22 Gravel Pore Space Available for Retention (Below Underdrain) 0.40 0.40 0.40 unitless 23 Effective Retention Depth 2.25 2.25 15.30 inches
24 Fraction of DCV Retained (Independent of Drawdown Time) 0.10 0.56 0.66 ratio 25 Calculated Retention Storage Drawdown Time 120 120 61 hours 26 Efficacy of Retention Processes 0.12 0.51 0.70 ratio 27 Volume Retained by BMP (Considering Drawdown Time) 517 162 1,247 cubic-feet 28 Design Capture Volume Remaining for Biofiltration 3,766 159 533 cubic-feet 29 Max Hydromod Flow Rate through Underdrain 0.0858 0.0304 0.0000 cfs 30 Max Soil Filtration Rate Allowed by Underdrain Orifice 1.66 1.37 0.00 in/hr 31 Soil Media Filtration Rate per Specifications 5.00 5.00 5.00 in/hr 32 Soil Media Filtration Rate to be used for Sizing 1.66 1.37 0.00 in/hr 33 Depth Biofiltered Over 6 Hour Storm 9.94 8.19 0.00 inches 34 Ponding Pore Space Available for Biofiltration 1.00 1.00 0.00 unitless 35 Soil Media Pore Space Available for Biofiltration 0.20 0.20 0.00 unitless 36 Gravel Pore Space Available for Biofiltration (Above Underdrain) 0.40 0.40 0.00 unitless 37 Effective Depth of Biofiltration Storage 13.80 13.80 0.00 inches 38 Drawdown Time for Surface Ponding 4 4 24 hours
39 Drawdown Time for Effective Biofiltration Depth 8 10 0 hours 40 Total Depth Biofiltered 23.74 21.99 0.00 inches
41 Option 1 - Biofilter 1.50 DCV: Target Volume 5,648 238 800 cubic-feet 42 Option 1 - Provided Biofiltration Volume 4,427 238 0 cubic-feet 43 Option 2 - Store 0.75 DCV: Target Volume 2,824 119 400 cubic-feet 44 Option 2 - Provided Storage Volume 2,574 119 0 cubic-feet 45 Portion of Biofiltration Performance Standard Satisfied 0.91 1.00 0.00 ratio 46 Do Site Design Elements and BMPs Satisfy Annual Retention Requirements? Yes Yes Yes yes/no 47 Overall Portion of Performance Standard Satisfied (BMP Efficacy Factor) 1.00 1.00 0.70 ratio 48 Deficit of Effectively Treated Stormwater 0 0 -534 cubic-feet Biofiltration
Calculations
-This BMP does not fully satisfy the performance standards for pollutant control for the drainage area. - BMPs sized at <3% of the effective tributary areas must be accompanied by Reduced Size BMP Maintenance calculations (see last tab).

False
False
Result
False
False
Attention!
Retention
Calculations
Automated Worksheet B.3: BMP Performance (V2.0)
False
False
BMP Inputs
Category # Description iii Units
1 Drainage Basin ID or Name DMA-3 unitless
2 Final Effective Tributary Area 30,949 sq-ft
3 Provided BMP Surface Area 839 sq-ft
4 Average Annual Precipitation 14.0 inches
5 Load to Clog (default =2.0) 2.0 lb/sq-ft
6 TSS Pretreatment Efficacy yes/no
7 Percentage "Commercial" percentage
8 Percentage "Education" percentage
9 Percentage "Industrial" percentage
10 Percentage "Low Traffic Areas" percentage
11 Percentage "Multi-Family Residential" percentage
12 Percentage "Roof Areas" percentage
13 Percentage "Single Family Residential" percentage
14 Percentage "Transportation" 100% percentage
15 Percentage "Vacant/Open Space" percentage
16 Percentage "Steep Hillslopes" percentage
17 Total Percentage of Above Land Uses 100% percentage
18 Average TSS Concentration for Tributary After Pretreatment 70 mg/L 19 Average Annual Runoff Volume 36,107 cubic-feet
20 Average Annual TSS Load 158 lb/yr
21 Available Sediment Storage within BMP 1,678 lb
22 Anticipated Major Maintenance Frequency 10.6 years
False
False
Automated Worksheet B.4: Reduced Size BMP Maintenance Interval (V2.0) Drainage Basin
Info
Biofiltration
Clogging
Inputs
No Warning Messages
Result
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
ATTACHMENT 2

BACKUP FOR PDP HYDROMODIFICATION CONTROL MEASURES

This is the cover sheet for Attachment 2.

Mark this box if this attachment is empty because the project is exempt from PDP hydromodification management requirements.

Indicate which Items are Included behind this cover sheet:

Attachment
Sequence
Contents Checklist
Attachment 2a Hydromodification Management Exhibit
(Required)


Included

See Hydromodification Management
Exhibit Checklist on the back of this
Attachment cover sheet.

Attachment 2 b Management of Critical Coarse Sediment
Yield Areas (WMAA Exhibit is required,
additional analyses are optional)

See Section 6.2 of the BMP Design
Manual.

Exhibit showing project drainage
boundaries marked on WMAA
Critical Coarse Sediment Yield Area
Map (Required)

Optional analyses for Critical Coarse
Sediment Yield Area Determination
 6.2.1 Verification of Geomorphic
Landscape Units Onsite
 6.2.2 Downstream Systems
Sensitivity to Coarse Sediment
 6.2.3 Optional Additional Analysis
of Potential Critical Coarse
Sediment Yield Areas Onsite

Attachment 2 c Geomorphic Assessment of Receiving
Channels (Optional)
See Section 6.3.4 of the BMP Design
Manual.

Not performed
 Included
 Submitted as separate stand-alone
document

Attachment 2 d Flow Control Facility Design , including Structural BMP Drawdown Calculations
and Overflow Design Summary
(Required)
See Chapter 6 and Appendix G of the
BMP Design Manual

Included
 Submitted as separate stand-alone
document

Attachment 2e Vector Control Plan (Required when
structural BMPs will not drain in 96
hours)

Included
 Not required because BMPs will
drain in less than 96 hours

Attachment 2A:

Hydromodification Management Exhibit
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Use this checklist to ensure the required information has been included on the Hydromodification Management Exhibit:

The Hydromodification Management Exhibit must identify:

 Underlying hydrologic soil group
 Approximate depth to groundwater
 Existing natural hydrologic features (watercourses, seeps, springs, wetlands)  Critical coarse sediment yield areas to be protected
 Existing topography
 Existing and proposed site drainage network and connections to drainage offsite  Proposed grading
 Proposed impervious features
 Proposed design features and surface treatments used to minimize imperviousness  Point(s) of Compliance (POC) for Hydromodification Management  Existing and proposed drainage boundary and drainage area to each POC (when necessary, create separate exhibits for pre-development and post-project conditions)  Structural BMPs for hydromodification management (identify location, type of BMP, and size/detail)

I
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RILL/NC FNTFRPR/SFS CAPAL/NA
APARTMENTS PR£ OFVFLOPMFNT
HYOROMOO/FICA 1/0N EXHIBIT

ENGINEERING
lAND ~NIM; • ENlltmNG • SIJRl{fflG
WJ STAlE PlACE; Em~OO, CA 92029
PH (76D)745-~18 FX (76D)745-189D
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APALINA RD
. 4" AC OVER 7.5"
• ~ CLASS II BASE
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SEE NOTE 9
-«AASHTO #57
GRAVEL
GREEN SmEET 1£GETAlll) SWALE SECllON
TIP/CAL SECllON NOT TO SCALE
DISTANCE fflON TOE
OF Si.OPE TO UHER
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/]I,(, cc
SOURCE CONTROL Smt/Cll/RAL BIO-BASIN st/lNAHY TAB!.£

SOURCE CONTROL REQUIREMENT NODE IMPLEMENTAION
SC-1 PREVENTION OF ILLICIT DISCHARGES ( r-r

EFFECTIVE IRRIGATION WILL BE IMPLEMENTED AND
'/ VEHICLE WASHING IS PROHIBITED
~~
STENCIL EVERY INLET WITH PROHIBmVE WORDS: "NO
SC-2 STORM DRAN STENCILING OR SIGNAGE DUMPING! DRAINS TO WATERWAYS• AND "NO CONTAMINE" IN SPANISH.
' TIRASH ENCLOSURE WILL BE PROTECTED BY LID OR BE
SC-5 PROTECT TRASH STORAGE ( 'C-5 WALLED WITH ROOF TO AVOID STORMWATER GET

CONTAMINATED
Al A2 AJ 8 ear~ IJ'lfflCES EFFFCOIC C 0 E OIDm.OW DIANE/EH

OIIA OVA
-Tl7'EOF8'/P A""4 (/NCH} (/NcH) (/NcH) (/NcH) (/NcH) (/NcH) (/NcH) "1111/C "1PlHJ/EABIE NAAIE TIP£ NAJI£ lfAllR 7'Y' OF /HAN 1/PPEJ? SIZE UPPER LOIIER LIM7'? (s,n) WAUTY BASIN /J/JT /JRlflCE J/ElJIA ''""'
IHSET (II/CHES) (/NcH) (/NcH)
OIIA-1 """" BJIP-A BKYll. lRA lltW 2238 g 32.52 6 - 18 12 i75 .,.,..,. - 1.375 /IT ff)8'1f' OIIA-2 """" BJIP-8 BKYll. lRA lltW 962 g 21 6 18 12 225 .,.,..,. 082 /IT ff)8'1f' - - r:
•-3• ()f/AJNS 8'/P-0 ICCETAlllJ /J.J9 6 12 18 12 ,5 SYOES 11'11.Y IJNA-5 ff)8'1f' SlfA/.E - - - - - 'NOTE.· WA-J ANO WA-5 ARE SEPARATEO IN HYIJROl,/0/JIRCAllON (SHMV) SINCE 0/ffERENT SOIL TIPE HAS 0/fFEl/E//T SHMl,f PARAVE!ERS. 80111 OF WA-J ANO WA-5 ORA/NS TO 84/P-0.

NOT TO SCALE
mtlitl,QtlC oz QWUJ
APR/JI/ FOIi ENERCY
0/So/PA!ER
ll/E H/fJl/0/.0G/CAL Sll'L Cl/0/JP FOi/ 111/S SITE IS TIPE CANO TIPE 0.

EJIISTl(fi .l11E ffAT/1/U
• ll/E APPRO)(!l,fATE llll'll/ TO CRO/INOIYA!ER IS CREA!ER ll/EN 20 fEEl • HIER£ ARE NO NAll/RAL H'IDROi.OGJC FEAll/RES ON HIE Sil£ 4"-6" DROP
FRO!,/ CtJR8
>C/JTTOAll'll:W
• BASEO ON IYA!ERS//El} VAPPINC OF POllNllAL CR/llCAL COARSE S[l)/1,fENT YIELO AREAS (CCSYA), ll/ERE ARE NO =YA LOCATEO Hill/IN ll/E PRo.ECT 80/JNOARY OIi TR/81/TARY TO 11/E R/JNOfF 8/PASSEO ARO/INO ll/E SITE.
• HIE S/lE PROPOSES TO CONNECT HIE E.K/SllNC CIJRB tt CIJTlER LOCAJEO ON JI/SS/ON ROAD ON HIE NOl/111 SIOE OF ll/E PRO.ECl
LEGENO
WA 80/JNOARY
----
- -
c--~TCIIBASIN

PER PLAN
POC
~ ~
SCH 40 Pl!:' VALE
AOAP!ER (ViTP,SoC)
r
l!i,~ I :ti (•lili!J.I
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;..__OR/LL ORIRCE HO/.E AT
fl0/11./NE OF ENO CAP
WAlER (){JAL/TY BASIN INSTALLAllON NOll'S:
, J INCHES OF COC/JN/JT <Xl'R.

2. AN /JNOE/IO/IAIN CLEANO/JT Hill/ A l,flN/1,(IJl,f 6-INCH 0/AVE!ER ANO LOCl(ABLE CAP IS PLACEO El£RY 250 TO JOOFEET AS REO/JIREO BASEO ON /JNOE/IO/IAIN LENClll.
.1 1£CETA llON I/SEO S/10/JLO BE SIJ/lilBLE FOIi ll/E CUVA TE PER LANOSCAPE PLANS

4. RI lER aMRSE IS A l,f/N/1,flJI,( OF 6 INCHES PROif/JEIJ IN TIIO SEPARATE J INCH LA i'c/1S. ll/E TOP LA /'cl/ SI/ALL BE VAOE OF ASTl,f CJJ CHOKER SANO ANO ll/E BOTTO!,/ LA/'cl/ BE OF ASTl,f NO. 8 ACCIIECATE. VARKERS STAKES SI/ALL BE I/SEO TO ENS/IRE /JNIFOl/1,f LIFT 111/CKNESS. 5 AAS//TO NO. 57 STONE OIi CLASS 2 PERl,/EAB/.E PER CAL TRANS SPEC/RCAllON 68-,025 IS REC(}l,(l,fENOEO FOIi 11/E ACCIIECATE STOIIACE LA /'cl/. IYAS//E!J, OPEN-CRAOEO CR/JS/Ill} ROCI( VAY BE /JSE!J, HOl/£m?, A 4 INCH 1,//N/l,f/Jl,f WAS/Ill) PEA CRA J£/. RI !ER COURSE LA /'cl/ AT 11/E TOP OF ll/E CR/JS/Ill} ROCI( IS REO/JIREO.

6. /l,fPE/11,/EABLE LINER SI/ALL BE INSTALL[l) HlfEN ll/E 8/0FlL TRA llON BASIN IS Hill/IN 10 FEET OF RETAINING WALLS OIi 811/LO/NC FOi/NOA llONS. OIi AS REC(}l,(l,/£NOEO 8 Y ll/E Sll'LS ENQ'Nfm OIi REO/JIREO 8 Y 11/ESE PLANS. /1,(f'E//1,(EABLE LINER SI/ALL BE JO VIL 111/CK (PER COUNTY OF £4N 0/ECO CIIEEN Sll/EE!S OESICN STANOARO ORAHINC CS-.100 ANO COUNTY CIIEEN Sll/EE!S S/JPPLEl,/ENT TO CAL TRANS SPEC/RCAllONS 20-1'088) CONRC/JREO TO ENllREl Y ENC(}l,(PASS 11/E S/OES OF ll/E /YA !ER 0/JAL/TY BASIN.

7. /1,fPERl,/EABLE LINER BE CONS1RIJCTEO IN C(}l,(PL/ANCE Hill/ ll/E COUNTY OF SAN 0/ECO CIIEEN STREE!S S/JPPI.El,/ENT TO CAL TRANS SPEC/RCA llONS 20-11.088.

8. 8/0FILTRAllON Sll'L l,f[l)/A LA/'cl/ (BS/,/) SI/ALL CONSIST OF 60% TO 80% BY WLIJl,(E SANO. /JP TO 20% BY 1171/Jl,fE TOPSll'L. ANO /JP 20% BY 1171/Jl,fE C(}l,(POST (PER CITY OF £4N VARCOS 81,(P OES/CN VAN/JAL FEllR/JARY 202J Affli\/0/% F.J SECl/ON 80J-2 BLENOEO BS/,/ CR/llRIA ANO /ESllNC REOIJIREl,fENlS) 8Sl,f SI/ALL BE LIC/lll Y CIJl,fPACTEO ANO PLACEO IN LOOSE I/FIS APPRO)(!l,fATELY 12 INCHES TO ENS/IRE REASONABLE SETll.EVENT H/1110/JT EXCESS/I£ C(}l,(PACllON (PER CITY OF £4N VARCOS 81,fp OESICN VAN/JAL FEllR/JARY 202J APPENO/% F.J SECllON BOJ-6 OEL/i£RY, STOIIACE; HANOI/NC, ANO PA/1/ENI}. BS/,/ PERl,/EAB/LITY REO/JIRES 8-24 INCHES,A/0/JR FOIi 84/PS H/1110/JT 0/JllET CONTROi.; 15-80 INCHES,A/0/JR FOi/ 81,fPS Hill/ 0/JllET CONTROi.; /ESllNC IS REO/JIREO TO OE/,/ONSTRA TE (PER CITY OF SAN VARCOS 81,(P OES/CN VAN/JAL FEllR/JARY 202J APPENO/% F.J SECl/ON 80.J-8 SI/WARY).

9. ll/E ACCIIECATE STOIIACE LAffR SI/ALL BE C(}l,(PACTEO IN ACa'.WANCE Hill/ SOILS ENQ'NEEl/'S RECIJl,fl,fENOA llONS.

10. 01£Rfl0/f S1RIJC1VRE TO HAI£ A l,f/N/1,f/Jl,f OF 12 INCHES OF fl?EEBOARO.

11. ALL LINER INSTALLAllONS. REIO l/£l.O/NC OF SEAl,f.5; ANO OBSERVAllON OF Sll'L l,f/% PLACEYENT SI/ALL REO/J/RE SPECIAL INSPECllON BY ll/E PRIJ,ECT CEO TECHNICAL ENQ'NEE/1 OIi O 11/ER 0/JAL/R[l) PER.m\l A LETTER CER llFYINC PROPER INSlilLLA llON SHALL BE PROWOEO TO ll/E ENQ'NEE/1 OF REa'.W TO ACCEPlilNCE OF ll/E FAC/L/llES.

12. SPECIAL INSPECllON SI/ALL BE REO/JIREO FOIi CONS1RIJC1JON OF ALL 8/0FILTRAllON BASINS. INSPECllON SI/ALL BE PERF/JRl,/El) BY A 0/JAL/R[l) /NO/WO/JAL (SI/CH AS.· ENQ'NEE/1 OF REmw, OS/J) INSPECllON SI/ALL INCL/JOE:
• IIER/flCA llON OF OicRALL 0/AIENSIONS PRIOR RJ PlAC8(£NT OF VA llRIALS.·
• PLACEl,fENT OF ll/E LINER, IF REO/JIREO;ANO SEAl,fS OIi PENETRA llONS • PLACEVENT OF ll/E CRA J£1.. fll. TER VA llRIAL.5; ANO RI !ER l,(El)/A; • ALL INLET ANO 0/JllET STR/JClVRES INCL/JO/NC 1/Nl!'il'ORAIN.5; IF REO/JIREO.
• CONlRACTOR SHALL TAKE P/Cll/RES AT EACH STACE OF
INSTALLA l/ON ANO S/181,f/TTEO TO ENQ'NErR FOR I/ER/RCA llON OF INSTALL.

INSPECT0/1 SI/ALL BE Q'ie/ A l,f/N/1,f/Jl,f OF 48 HO/IRS PR/OIi TO INSPECllON.

I/PON C(}l,(PIEllON 11/E !NSPECT0/1 SI/ALL PROWOE A CE/lllRCAllON TO 11/E ENQ'NEE/1 OF M'.IOC

1.1 PROPOSE/J VA llRIALS. SI/CH AS ACCIIECA 1E. RI !ER VA TERIAL, ANO fl!. !ER l,f[l)/A SI/ALL BE S//81,(/TlElJ TO ll/E ENQ'NEE/1 OF IIORI( FOIi APPROVAL.

PERMANENT WATER QUALITY

TREATMENT FACILITY

KEEPING DUR WATER WAYS CLEAN
MI\INTAIN WITH CARE - NO MODIFlCATIONS WrTHOUT AGENCY APPROVAL DETAIL
WATER OUALllY SIGN- PLACED AT

EACH BIOFILTRATION BASIN
NOTE: ALL BIOFILTRATIDN AREAS WILL

HAVE A SIGN POSTED TO BE
VlSIBLE AT ALL TIMES.

DETAIL (SIZE PER BIO-BASIN OETAIL)
?t'O O{INP/Nt;" AT CATCH BASINS
NOTE.· ALL CATCH BASINS Hill/ CRA/ES SI/ALL
BE SllNC/L[l) Hill/ CITY REO/JIREO /1£1,f PER
A801£ OElAII. (OAS VAN/JFAClVRINC /Sl}O OIi
EO/JIVALENI}.

LOIIER OR/flCE DETAIL

NOT TO SCALE
120·
6" P/,f;' PIP£ PERFORAllON
fAYO(JT OETAIL
NOT TO SC4/.E
SCALF: I ' 40"
-- ---- -0 10 80 120 160
Fl RILL/NC £NT£RPR/S£S CAPAL/NA
u APARTMENTS HYOROMOO EXHIBIT

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022

The map above shows potential critical course sediment areas. No potential critical coarse sediment yield areas nearby that will influence the project.

Potential Critical Coarse Sediment
Capalina Rd
PCCSYA
Project Site

1 [TITLE]
2 ;;Project Title/Notes
3 4 [OPTIONS]
5 ;;Option Value
6 FLOW_UNITS CFS
7 INFILTRATION GREEN_AMPT
8 FLOW_ROUTING KINWAVE
9 LINK_OFFSETS DEPTH
10 MIN_SLOPE 0
11 ALLOW_PONDING YES
12 SKIP_STEADY_STATE NO
13 14 START_DATE 09/24/1964
15 START_TIME 00:00:00
16 REPORT_START_DATE 09/24/1964
17 REPORT_START_TIME 00:00:00
18 END_DATE 05/23/2008
19 END_TIME 23:00:00
20 SWEEP_START 01/01
21 SWEEP_END 12/31
22 DRY_DAYS 0
23 REPORT_STEP 01:00:00
24 WET_STEP 00:10:00
25 DRY_STEP 24:00:00
26 ROUTING_STEP 0:01:00
27 RULE_STEP 00:00:00
28 29 INERTIAL_DAMPING PARTIAL
30 NORMAL_FLOW_LIMITED BOTH
31 FORCE_MAIN_EQUATION H-W
32 VARIABLE_STEP 0.75
33 LENGTHENING_STEP 0
34 MIN_SURFAREA 12.557
35 MAX_TRIALS 8
36 HEAD_TOLERANCE 0.005
37 SYS_FLOW_TOL 5
38 LAT_FLOW_TOL 5
39 MINIMUM_STEP 0.5
40 THREADS 1
41 42 [EVAPORATION]
43 ;;Data Source Parameters
44 ;;-------------- ----------------
45 MONTHLY 0.06 0.08 0.11 0.16 0.18 0.21 0.21 0.2 0.16 0.12 0.08 0.06 46 DRY_ONLY NO
47 48 [RAINGAGES]
49 ;;Name Format Interval SCF Source 50 ;;-------------- --------- ------ ------ ---------- 51 Escondido INTENSITY 1:00 1.0 TIMESERIES Escondido 52 53 [SUBCATCHMENTS]
54 ;;Name Rain Gage Outlet Area %Imperv Width %Slope CurbLen SnowPack 55 ;;-------------- ---------------- ---------------- -------- -------- -------- -------- -------- ---------------- 56 DMA-1 Escondido POC-1 2.4838 0 420 3.9 0 57 DMA-2 Escondido POC-1 0.1328 0 25.464 3.2 0 58 DMA-3 Escondido DMA-2 0.0742 0 25.464 3.2 0 59 OFFSITE-1.1 Escondido OFFSITE-1.2 0.1622 100 35 3.2 0 60 OFFSITE-1.2 Escondido POC-1 0.3597 100 35 3.2 0 61 OFFSITE-1.3 Escondido POC-1 0.0854 100 10 3.2 0 62 63 [SUBAREAS]
64 ;;Subcatchment N-Imperv N-Perv S-Imperv S-Perv PctZero RouteTo PctRouted 65 ;;-------------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- 66 DMA-1 0.03 0.15 0.05 0.1 25 OUTLET 67 DMA-2 0.03 0.15 0.05 0.1 25 OUTLET 68 DMA-3 0.03 0.15 0.05 0.1 25 OUTLET 69 OFFSITE-1.1 0.03 0.15 0.05 0.1 25 OUTLET 70 OFFSITE-1.2 0.03 0.15 0.05 0.1 25 OUTLET 71 OFFSITE-1.3 0.03 0.15 0.05 0.1 25 OUTLET 72 73 [INFILTRATION]
74 ;;Subcatchment Suction Ksat IMD
75 ;;-------------- ---------- ---------- ----------
76 DMA-1 9 0.01875 0.3
77 DMA-2 9 0.01875 0.33
78 DMA-3 6 0.075 0.32
79 OFFSITE-1.1 9 0.01875 0.33
80 OFFSITE-1.2 6 0.075 0.32
81 OFFSITE-1.3 9 0.01875 0.33
82 83 [OUTFALLS]
84 ;;Name Elevation Type Stage Data Gated Route To 85 ;;-------------- ---------- ---------- ---------------- -------- ---------------- 86 POC-1 0 FREE NO 87 88 [TIMESERIES]
89 ;;Name Date Time Value
90 ;;-------------- ---------- ---------- ----------
91 Escondido FILE "R:\_Storm\HydMOD\Rain gauge Data\Escondido\Escondido.prn" 92 93 [REPORT]
94 ;;Reporting Options
95 INPUT YES
96 CONTROLS YES
97 SUBCATCHMENTS ALL
98 NODES ALL
99 LINKS ALL
100
101 [TAGS]
102
103 [MAP]
104 DIMENSIONS 6262927.560 2031129.642 6269704.935 2035647.892 105 Units Feet
106
107 [COORDINATES]
108 ;;Node X-Coord Y-Coord
109 ;;-------------- ------------------ ------------------ 110 POC-1 6265392.566 2034628.504
111
112 [VERTICES]
113 ;;Link X-Coord Y-Coord
114 ;;-------------- ------------------ ------------------ 115
116 [Polygons]
117 ;;Subcatchment X-Coord Y-Coord
118 ;;-------------- ------------------ ------------------ 119 DMA-1 6265650.752 2033555.697
120 DMA-2 6265352.503 2032794.495
121 DMA-3 6264310.857 2032834.558
122 OFFSITE-1.1 6263652.038 2033462.216
123 OFFSITE-1.2 6264217.376 2033484.474
124 OFFSITE-1.3 6265632.946 2032638.693
125
126 [SYMBOLS]
127 ;;Gage X-Coord Y-Coord
128 ;;-------------- ------------------ ------------------ 129 Escondido 6264417.692 2034695.276
130
131
1 2 EPA STORM WATER MANAGEMENT MODEL - VERSION 5.1 (Build 5.1.014) 3 -------------------------------------------------------------- 4 5
6 *************
7 Element Count
8 *************
9 Number of rain gages ...... 1
10 Number of subcatchments ... 6
11 Number of nodes ........... 1
12 Number of links ........... 0
13 Number of pollutants ...... 0
14 Number of land uses ....... 0
15 16
17 ****************
18 Raingage Summary
19 ****************
20 Data Recording 21 Name Data Source Type Interval 22 ------------------------------------------------------------------------ 23 Escondido Escondido INTENSITY 60 min. 24 25
26 ********************
27 Subcatchment Summary
28 ********************
29 Name Area Width %Imperv %Slope Rain Gage Outlet 30 ----------------------------------------------------------------------------------------------------------- 31 DMA-1 2.48 420.00 0.00 3.9000 Escondido POC-1 32 DMA-2 0.13 25.46 0.00 3.2000 Escondido POC-1 33 DMA-3 0.07 25.46 0.00 3.2000 Escondido DMA-2 34 OFFSITE-1.1 0.16 35.00 100.00 3.2000 Escondido OFFSITE-1.2 35 OFFSITE-1.2 0.36 35.00 100.00 3.2000 Escondido POC-1 36 OFFSITE-1.3 0.09 10.00 100.00 3.2000 Escondido POC-1 37 38
39 ************
40 Node Summary
41 ************
42 Invert Max. Ponded External 43 Name Type Elev. Depth Area Inflow 44 ------------------------------------------------------------------------------- 45 POC-1 OUTFALL 0.00 0.00 0.0 46 47
48 49 ********************************************************* 50 NOTE: The summary statistics displayed in this report are 51 based on results found at every computational time step, 52 not just on results from each reporting time step. 53 ********************************************************* 54 55 ****************
56 Analysis Options
57 ****************
58 Flow Units ............... CFS
59 Process Models:
60 Rainfall/Runoff ........ YES
61 RDII ................... NO
62 Snowmelt ............... NO
63 Groundwater ............ NO
64 Flow Routing ........... NO
65 Water Quality .......... NO
66 Infiltration Method ...... GREEN_AMPT
67 Starting Date ............ 09/24/1964 00:00:00
68 Ending Date .............. 05/23/2008 23:00:00
69 Antecedent Dry Days ...... 0.0
70 Report Time Step ......... 01:00:00
71 Wet Time Step ............ 00:10:00
72 Dry Time Step ............ 00:00:00
73 74
75 *********************
76 Control Actions Taken
77 *********************
78 79
80 ************************** Volume Depth 81 Runoff Quantity Continuity acre-feet inches 82 ************************** --------- ------- 83 Total Precipitation ...... 167.983 611.200 84 Evaporation Loss ......... 10.928 39.762 85 Infiltration Loss ........ 96.197 350.010 86 Surface Runoff ........... 62.162 226.173 87 Final Storage ............ 0.004 0.014 88 Continuity Error (%) ..... -0.779
89 90
91 ************************** Volume Volume 92 Flow Routing Continuity acre-feet 10^6 gal 93 ************************** --------- --------- 94 Dry Weather Inflow ....... 0.000 0.000 95 Wet Weather Inflow ....... 62.161 20.256 96 Groundwater Inflow ....... 0.000 0.000 97 RDII Inflow .............. 0.000 0.000 98 External Inflow .......... 0.000 0.000 99 External Outflow ......... 62.161 20.256 100 Flooding Loss ............ 0.000 0.000 101 Evaporation Loss ......... 0.000 0.000 102 Exfiltration Loss ........ 0.000 0.000 103 Initial Stored Volume .... 0.000 0.000 104 Final Stored Volume ...... 0.000 0.000 105 Continuity Error (%) ..... 0.000
106
107
108 ***************************
109 Subcatchment Runoff Summary
110 ***************************
111
112
--------------------------------------------------------------------------------------------------------------------- ---------
113 Total Total Total Total Imperv Perv Total Total Peak Runoff
114 Precip Runon Evap Infil Runoff Runoff Runoff Runoff Runoff Coeff
115 Subcatchment in in in in in in in 10^6 gal CFS
116
--------------------------------------------------------------------------------------------------------------------- ---------
117 DMA-1 611.20 0.00 28.19 425.20 0.00 163.23 163.23 11.01

2.00 0.267
118 DMA-2 611.20 29.65 27.10 430.89 0.00 188.00 188.00 0.68

0.16 0.293
119 DMA-3 611.20 0.00 6.06 552.91 0.00 53.06 53.06 0.11

0.06 0.087
120 OFFSITE-1.1 611.20 0.00 89.61 0.00 524.68 0.00 524.68 2.31

0.14 0.858
121 OFFSITE-1.2 611.20 236.59 96.21 0.00 753.71 0.00 753.71 7.36

0.46 0.889
122 OFFSITE-1.3 611.20 0.00 93.02 0.00 520.26 0.00 520.26 1.21

0.08 0.851
123
124
125 Analysis begun on: Thu Mar 30 17:55:39 2023
126 Analysis ended on: Thu Mar 30 17:56:07 2023
127 Total elapsed time: 00:00:28
1 [TITLE]
2 ;;Project Title/Notes
3 Drawdown Time: 5 hours
4 Drawdown Time: 5 hours
5 6 [OPTIONS]
7 ;;Option Value
8 FLOW_UNITS CFS
9 INFILTRATION GREEN_AMPT
10 FLOW_ROUTING KINWAVE
11 LINK_OFFSETS DEPTH
12 MIN_SLOPE 0
13 ALLOW_PONDING YES
14 SKIP_STEADY_STATE NO
15 16 START_DATE 09/24/1964
17 START_TIME 00:00:00
18 REPORT_START_DATE 09/24/1964
19 REPORT_START_TIME 00:00:00
20 END_DATE 05/23/2008
21 END_TIME 23:00:00
22 SWEEP_START 01/01
23 SWEEP_END 12/31
24 DRY_DAYS 0
25 REPORT_STEP 01:00:00
26 WET_STEP 00:10:00
27 DRY_STEP 24:00:00
28 ROUTING_STEP 0:01:00
29 RULE_STEP 00:00:00
30 31 INERTIAL_DAMPING PARTIAL
32 NORMAL_FLOW_LIMITED BOTH
33 FORCE_MAIN_EQUATION H-W
34 VARIABLE_STEP 0.75
35 LENGTHENING_STEP 0
36 MIN_SURFAREA 12.557
37 MAX_TRIALS 8
38 HEAD_TOLERANCE 0.005
39 SYS_FLOW_TOL 5
40 LAT_FLOW_TOL 5
41 MINIMUM_STEP 0.5
42 THREADS 1
43 44 [EVAPORATION]
45 ;;Data Source Parameters
46 ;;-------------- ----------------
47 MONTHLY 0.06 0.08 0.11 0.16 0.18 0.21 0.21 0.2 0.16 0.12 0.08 0.06 48 DRY_ONLY NO
49 50 [RAINGAGES]
51 ;;Name Format Interval SCF Source 52 ;;-------------- --------- ------ ------ ---------- 53 Escondido INTENSITY 1:00 1.0 TIMESERIES Escondido 54 55 [SUBCATCHMENTS]
56 ;;Name Rain Gage Outlet Area %Imperv Width %Slope CurbLen SnowPack 57 ;;-------------- ---------------- ---------------- -------- -------- -------- -------- -------- ---------------- 58 DMA-1 Escondido BMP-A 2.140817 85.45 420 2.8 0 59 DMA-2 Escondido BMP-B 0.155847 77 25.464 1.5 0 60 DMA-3 Escondido BMP-D 0.0757 86 25.464 4 0 61 BMP-B Escondido POC-1 0.022091368 0 15 0 0 62 BMP-D Escondido POC-1 0.01927 0 7 0.5 0 63 BMP-A Escondido Sto-BMP-A 0.05137741 0 15 0 0 64 DMA-5 Escondido BMP-D 0.1144 100 25.464 4 0 65 DMA-4 Escondido POC-1 0.1114 0 25.464 1.7 0 66 OFFSITE-1.1 Escondido OFFSITE-1.2 0.1622 100 35 3.2 0 67 OFFSITE-1.2 Escondido POC-1 0.3597 100 35 3.2 0 68 OFFSITE-1.3 Escondido POC-1 0.0854 100 10 3.2 0 69 70 [SUBAREAS]
71 ;;Subcatchment N-Imperv N-Perv S-Imperv S-Perv PctZero RouteTo PctRouted 72 ;;-------------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- 73 DMA-1 0.012 0.04 0.05 0.1 25 OUTLET 74 DMA-2 0.012 0.04 0.05 0.1 25 OUTLET 75 DMA-3 0.012 0.04 0.05 0.1 25 OUTLET 76 BMP-B 0.012 0.08 0.05 0.1 25 OUTLET 77 BMP-D 0.012 0.06 0.05 0.1 25 OUTLET 78 BMP-A 0.012 0.08 0.05 0.1 25 OUTLET 79 DMA-5 0.012 0.04 0.05 0.1 25 OUTLET 80 DMA-4 0.012 0.04 0.05 0.1 25 OUTLET 81 OFFSITE-1.1 0.03 0.15 0.05 0.1 25 OUTLET 82 OFFSITE-1.2 0.03 0.15 0.05 0.1 25 OUTLET 83 OFFSITE-1.3 0.03 0.15 0.05 0.1 25 OUTLET 84 85 [INFILTRATION]
86 ;;Subcatchment Suction Ksat IMD
87 ;;-------------- ---------- ---------- ----------
88 DMA-1 9 0.01875 0.3
89 DMA-2 9 0.01875 0.33
90 DMA-3 6 0.1 0.32
91 BMP-B 9 0.01875 0.33
92 BMP-D 9 0.01875 0.33
93 BMP-A 9 0.01875 0.33
94 DMA-5 9 0.01875 0.33
95 DMA-4 9 0.025 0.33
96 OFFSITE-1.1 9 0.01875 0.33
97 OFFSITE-1.2 6 0.075 0.32
98 OFFSITE-1.3 9 0.01875 0.33
99 100 [LID_CONTROLS]
101 ;;Name Type/Layer Parameters
102 ;;-------------- ---------- ----------
103 BMP-A BC
104 BMP-A SURFACE 6 0 0 0 5 105 BMP-A SOIL 21 0.4 0.2 0.1 5 5 1.5 106 BMP-A STORAGE 12 0.67 0 0 107 BMP-A DRAIN 0.276668688 0.5 3 6 0 0 108
109 BMP-B BC
110 BMP-B SURFACE 6 0 0 0 5 111 BMP-B SOIL 21 0.4 0.2 0.1 5 5 1.5 112 BMP-B STORAGE 15 0.67 0 0 113 BMP-B DRAIN 0.228417584853396 0.5 6 6 0 0 114
115 BMP-D BC
116 BMP-D SURFACE 6 0 0 0 5 117 BMP-D SOIL 21 0.4 0.2 0.1 5 5 1.5 118 BMP-D STORAGE 24 0.67 0.025 0 119 BMP-D DRAIN 0 0.5 6 6 0 0 120
121 [LID_USAGE]
122 ;;Subcatchment LID Process Number Area Width InitSat FromImp ToPerv RptFile DrainTo FromPerv
123 ;;-------------- ---------------- ------- ---------- ---------- ---------- ---------- ---------- ------------------------ ---------------- ----------
124 BMP-B BMP-B 1 962.30 0 0 0 0 * * 0
125 BMP-D BMP-D 1 839.40 0 0 0 0 * POC-1 0
126 BMP-A BMP-A 1 2238.00 0 0 0 0 * BMP-C 0
127
128 [OUTFALLS]
129 ;;Name Elevation Type Stage Data Gated Route To 130 ;;-------------- ---------- ---------- ---------------- -------- ---------------- 131 POC-1 0 FREE NO 132
133 [STORAGE]
134 ;;Name Elev. MaxDepth InitDepth Shape Curve Name/Params N/A Fevap Psi Ksat IMD
135 ;;-------------- -------- ---------- ----------- ---------- ---------------------------- -------- -------- -------- --------
136 BMP-C 0 4 0 TABULAR BMP-C 0 0 137 Sto-BMP-A 0 1.72 0 TABULAR Sto-BMP-A 0 0 138 BMP-C.2 0 4 0 TABULAR BMP-C.2 0 0 139
140 [ORIFICES]
141 ;;Name From Node To Node Type Offset Qcoeff Gated CloseTime 142 ;;-------------- ---------------- ---------------- ------------ ---------- ---------- -------- ---------- 143 Orfice1 BMP-C BMP-C.2 SIDE 0 0.61 NO 0 144 Orifice2 BMP-C.2 POC-1 SIDE 0 0.61 NO 0 145
146 [WEIRS]
147 ;;Name From Node To Node Type CrestHt Qcoeff Gated EndCon EndCoeff Surcharge RoadWidth RoadSurf Coeff. Curve
148 ;;-------------- ---------------- ---------------- ------------ ---------- ---------- -------- -------- ---------- ---------- ---------- ---------- ----------------
149 Spillway1 BMP-C BMP-C.2 TRANSVERSE 2.75 3.33 NO 0 0 YES
150 CatchBasin Sto-BMP-A BMP-C TRANSVERSE 0 3.33 NO 0 0 YES
151 EmergencyRiser Sto-BMP-A POC-1 TRANSVERSE 0.7 3.33 NO 0 0 YES
152 Spillway3 BMP-C.2 POC-1 TRANSVERSE 2 3.33 NO 0 0 YES
153 Spillway2 BMP-C.2 POC-1 TRANSVERSE 1.5 3.33 NO 0 0 YES
154
155 [XSECTIONS]
156 ;;Link Shape Geom1 Geom2 Geom3 Geom4 Barrels Culvert 157 ;;-------------- ------------ ---------------- ---------- ---------- ---------- ---------- ---------- 158 Orfice1 RECT_CLOSED 0.125 0.9338 0 0 159 Orifice2 RECT_CLOSED 0.08333 0.08333 0 0 160 Spillway1 RECT_OPEN 2.49 3.7 0 0 161 CatchBasin RECT_OPEN 1.72 16 0 0 162 EmergencyRiser RECT_OPEN 1.02 9 0 0 163 Spillway3 RECT_OPEN 2 3 0 0 164 Spillway2 RECT_OPEN 0.5 0.25 0 0 165
166 [CURVES]
167 ;;Name Type X-Value Y-Value
168 ;;-------------- ---------- ---------- ---------- 169 BMP-C Storage 0 0
170 BMP-C 0.4 800
171 BMP-C 0.8 585
172 BMP-C 1.2 1100
173 BMP-C 1.6 755
174 BMP-C 2 1185
175 BMP-C 2.4 755
176 BMP-C 2.8 1100
177 BMP-C 3.2 585
178 BMP-C 3.6 800
179 BMP-C 4 5
180 ;
181 Sto-BMP-A Storage 0 1322.89
182 Sto-BMP-A 0.22 1363.64
183 Sto-BMP-A 0.47 1411.48
184 Sto-BMP-A 0.72 1461.03
185 Sto-BMP-A 0.97 1567.97
186 Sto-BMP-A 1.22 2317.37
187 Sto-BMP-A 1.47 4634.59
188 Sto-BMP-A 1.72 7511.9
189 ;
190 BMP-C.2 Storage 0 0
191 BMP-C.2 0.4 367
192 BMP-C.2 0.8 268
193 BMP-C.2 1.2 507
194 BMP-C.2 1.6 348
195 BMP-C.2 2 542
196 BMP-C.2 2.4 348
197 BMP-C.2 2.8 502
198 BMP-C.2 3.2 273
199 BMP-C.2 3.6 362
200 BMP-C.2 4 4
201
202 [TIMESERIES]
203 ;;Name Date Time Value
204 ;;-------------- ---------- ---------- ---------- 205 Escondido FILE "R:\_Storm\HydMOD\Rain gauge Data\Escondido\Escondido.prn" 206
207 [REPORT]
208 ;;Reporting Options
209 INPUT YES
210 CONTROLS YES
211 SUBCATCHMENTS ALL
212 NODES ALL
213 LINKS ALL
214
215 [TAGS]
216
217 [MAP]
218 DIMENSIONS 6262927.560 2031129.642 6269704.935 2035647.892 219 Units Feet
220
221 [COORDINATES]
222 ;;Node X-Coord Y-Coord
223 ;;-------------- ------------------ ------------------ 224 POC-1 6265392.566 2034628.504
225 BMP-C 6266219.543 2033015.380
226 Sto-BMP-A 6266100.351 2034285.740
227 BMP-C.2 6265585.591 2033692.312
228
229 [VERTICES]
230 ;;Link X-Coord Y-Coord
231 ;;-------------- ------------------ ------------------ 232 Orifice2 6265402.927 2034132.855
233 Spillway1 6265596.336 2033052.987
234 Spillway3 6265585.591 2034401.478
235 Spillway2 6265542.611 2033960.935
236 Spillway2 6265472.769 2034240.304
237
238 [Polygons]
239 ;;Subcatchment X-Coord Y-Coord
240 ;;-------------- ------------------ ------------------ 241 DMA-1 6266736.912 2033342.026
242 DMA-2 6265223.410 2033600.212
243 DMA-3 6264711.490 2035167.132
244 BMP-B 6265210.055 2034089.875
245 BMP-D 6264684.781 2034646.309
246 BMP-A 6266736.912 2034049.811
247 DMA-5 6264689.232 2034263.482
248 DMA-4 6266011.321 2034606.246
249 OFFSITE-1.1 6263732.165 2035362.997
250 OFFSITE-1.2 6264822.777 2035371.900
251 OFFSITE-1.3 6265428.178 2035216.099
252
253 [SYMBOLS]
254 ;;Gage X-Coord Y-Coord
255 ;;-------------- ------------------ ------------------ 256 Escondido 6264417.692 2034695.276
257
258
1 2 EPA STORM WATER MANAGEMENT MODEL - VERSION 5.1 (Build 5.1.014) 3 -------------------------------------------------------------- 4 5 Drawdown Time: 5 hours
6 Drawdown Time: 5 hours
7 8
9 *************
10 Element Count
11 *************
12 Number of rain gages ...... 1
13 Number of subcatchments ... 11
14 Number of nodes ........... 4
15 Number of links ........... 7
16 Number of pollutants ...... 0
17 Number of land uses ....... 0
18 19
20 ****************
21 Raingage Summary
22 ****************
23 Data Recording 24 Name Data Source Type Interval 25 ------------------------------------------------------------------------ 26 Escondido Escondido INTENSITY 60 min. 27 28
29 ********************
30 Subcatchment Summary
31 ********************
32 Name Area Width %Imperv %Slope Rain Gage Outlet 33 ----------------------------------------------------------------------------------------------------------- 34 DMA-1 2.14 420.00 85.45 2.8000 Escondido BMP-A 35 DMA-2 0.16 25.46 77.00 1.5000 Escondido BMP-B 36 DMA-3 0.08 25.46 86.00 4.0000 Escondido BMP-D 37 BMP-B 0.02 15.00 0.00 0.0000 Escondido POC-1 38 BMP-D 0.02 7.00 0.00 0.5000 Escondido POC-1 39 BMP-A 0.05 15.00 0.00 0.0000 Escondido Sto-BMP-A 40 DMA-5 0.11 25.46 100.00 4.0000 Escondido BMP-D 41 DMA-4 0.11 25.46 0.00 1.7000 Escondido POC-1 42 OFFSITE-1.1 0.16 35.00 100.00 3.2000 Escondido OFFSITE-1.2 43 OFFSITE-1.2 0.36 35.00 100.00 3.2000 Escondido POC-1 44 OFFSITE-1.3 0.09 10.00 100.00 3.2000 Escondido POC-1 45 46
47 *******************
48 LID Control Summary
49 *******************
50 No. of Unit Unit % Area % Imperv % Perv 51 Subcatchment LID Control Units Area Width Covered Treated Treated 52 --------------------------------------------------------------------------------------------------- 53 BMP-B BMP-B 1 962.30 0.00 100.00 0.00 0.00 54 BMP-D BMP-D 1 839.40 0.00 100.00 0.00 0.00 55 BMP-A BMP-A 1 2238.00 0.00 100.00 0.00 0.00 56 57
58 ************
59 Node Summary
60 ************
61 Invert Max. Ponded External 62 Name Type Elev. Depth Area Inflow 63 ------------------------------------------------------------------------------- 64 POC-1 OUTFALL 0.00 0.00 0.0 65 BMP-C STORAGE 0.00 4.00 0.0 66 Sto-BMP-A STORAGE 0.00 1.72 0.0 67 BMP-C.2 STORAGE 0.00 4.00 0.0 68 69
70 ************
71 Link Summary
72 ************
73 Name From Node To Node Type Length %Slope Roughness 74 --------------------------------------------------------------------------------------------- 75 Orfice1 BMP-C BMP-C.2 ORIFICE 76 Orifice2 BMP-C.2 POC-1 ORIFICE 77 Spillway1 BMP-C BMP-C.2 WEIR 78 CatchBasin Sto-BMP-A BMP-C WEIR 79 EmergencyRiser Sto-BMP-A POC-1 WEIR 80 Spillway3 BMP-C.2 POC-1 WEIR 81 Spillway2 BMP-C.2 POC-1 WEIR 82 83
84 *********************
85 Cross Section Summary
86 *********************
87 Full Full Hyd. Max. No. of Full 88 Conduit Shape Depth Area Rad. Width Barrels Flow 89 --------------------------------------------------------------------------------------- 90 91
92 93 ********************************************************* 94 NOTE: The summary statistics displayed in this report are 95 based on results found at every computational time step, 96 not just on results from each reporting time step. 97 ********************************************************* 98 99 ****************
100 Analysis Options
101 ****************
102 Flow Units ............... CFS
103 Process Models:
104 Rainfall/Runoff ........ YES
105 RDII ................... NO
106 Snowmelt ............... NO
107 Groundwater ............ NO
108 Flow Routing ........... YES
109 Ponding Allowed ........ YES
110 Water Quality .......... NO
111 Infiltration Method ...... GREEN_AMPT
112 Flow Routing Method ...... KINWAVE
113 Starting Date ............ 09/24/1964 00:00:00
114 Ending Date .............. 05/23/2008 23:00:00
115 Antecedent Dry Days ...... 0.0
116 Report Time Step ......... 01:00:00
117 Wet Time Step ............ 00:10:00
118 Dry Time Step ............ 00:00:00
119 Routing Time Step ........ 60.00 sec
120
121
122 *********************
123 Control Actions Taken
124 *********************
125
126
127 ************************** Volume Depth 128 Runoff Quantity Continuity acre-feet inches 129 ************************** --------- ------- 130 Initial LID Storage ...... 0.016 0.059 131 Total Precipitation ...... 167.988 611.200 132 Evaporation Loss ......... 27.451 99.875 133 Infiltration Loss ........ 21.465 78.096 134 Surface Runoff ........... 52.994 192.810 135 LID Drainage ............. 67.207 244.522 136 Final Storage ............ 0.053 0.194 137 Continuity Error (%) ..... -0.693
138
139
140 ************************** Volume Volume 141 Flow Routing Continuity acre-feet 10^6 gal 142 ************************** --------- --------- 143 Dry Weather Inflow ....... 0.000 0.000 144 Wet Weather Inflow ....... 120.200 39.169 145 Groundwater Inflow ....... 0.000 0.000 146 RDII Inflow .............. 0.000 0.000 147 External Inflow .......... 0.000 0.000 148 External Outflow ......... 120.161 39.156 149 Flooding Loss ............ 0.000 0.000 150 Evaporation Loss ......... 0.000 0.000 151 Exfiltration Loss ........ 0.000 0.000 152 Initial Stored Volume .... 0.000 0.000 153 Final Stored Volume ...... 0.000 0.000 154 Continuity Error (%) ..... 0.032
155
156
157 ********************************
158 Highest Flow Instability Indexes
159 ********************************
160 All links are stable.
161
162
163 *************************
164 Routing Time Step Summary
165 *************************
166 Minimum Time Step : 60.00 sec
167 Average Time Step : 60.00 sec
168 Maximum Time Step : 60.00 sec
169 Percent in Steady State : 0.00
170 Average Iterations per Step : 1.00
171 Percent Not Converging : 0.00
172
173
174 ***************************
175 Subcatchment Runoff Summary
176 ***************************
177
178
--------------------------------------------------------------------------------------------------------------------- ---------
179 Total Total Total Total Imperv Perv Total Total Peak Runoff
180 Precip Runon Evap Infil Runoff Runoff Runoff Runoff Runoff Coeff
181 Subcatchment in in in in in in in 10^6 gal CFS
182
--------------------------------------------------------------------------------------------------------------------- ---------
183 DMA-1 611.20 0.00 76.90 59.73 453.04 26.46 479.50 27.87

1.82 0.785
184 DMA-2 611.20 0.00 72.37 96.66 406.53 39.54 446.08 1.89

0.13 0.730
185 DMA-3 611.20 0.00 72.99 77.46 458.96 7.85 466.81 0.96

0.06 0.764
186 BMP-B 611.20 3146.85 792.84 0.00 0.00 0.00 2964.18 1.78

0.11 0.789
187 BMP-D 611.20 4985.91 742.82 2989.39 0.00 0.00 1863.22 0.97

0.18 0.333
188 BMP-A 611.20 19979.62 919.75 0.00 0.00 0.00 19665.70 27.44

1.84 0.955
189 DMA-5 611.20 0.00 85.57 0.00 530.97 0.00 530.97 1.65

0.10 0.869
190 DMA-4 611.20 0.00 18.14 459.30 0.00 135.64 135.64 0.41

0.09 0.222
191 OFFSITE-1.1 611.20 0.00 89.61 0.00 524.68 0.00 524.68 2.31

0.14 0.858
192 OFFSITE-1.2 611.20 236.59 96.21 0.00 753.71 0.00 753.71 7.36

0.46 0.889
193 OFFSITE-1.3 611.20 0.00 93.02 0.00 520.26 0.00 520.26 1.21

0.08 0.851
194
195
196 ***********************
197 LID Performance Summary
198 ***********************
199
200 -------------------------------------------------------------------------------------------------------------------- 201 Total Evap Infil Surface Drain Initial Final Continuity 202 Inflow Loss Loss Outflow Outflow Storage Storage Error 203 Subcatchment LID Control in in in in in in in % 204 -------------------------------------------------------------------------------------------------------------------- 205 BMP-B BMP-B 3758.05 792.87 0.00 14.44 2949.84 2.10 2.93 0.00 206 BMP-D BMP-D 5597.11 742.85 2989.50 1863.29 0.00 2.10 3.54 0.00 207 BMP-A BMP-A 20590.82 919.78 0.00 5237.00 14429.42 2.10 6.76 -0.00 208
209 ******************
210 Node Depth Summary
211 ******************
212
213 --------------------------------------------------------------------------------- 214 Average Maximum Maximum Time of Max Reported 215 Depth Depth HGL Occurrence Max Depth 216 Node Type Feet Feet Feet days hr:min Feet 217 --------------------------------------------------------------------------------- 218 POC-1 OUTFALL 0.00 0.00 0.00 0 00:00 0.00 219 BMP-C STORAGE 0.00 2.92 2.92 10332 16:56 2.92 220 Sto-BMP-A STORAGE 0.00 0.10 0.10 10332 16:32 0.10 221 BMP-C.2 STORAGE 0.05 2.27 2.27 10332 16:56 2.27 222
223
224 *******************
225 Node Inflow Summary
226 *******************
227
228 ------------------------------------------------------------------------------------------------- 229 Maximum Maximum Lateral Total Flow 230 Lateral Total Time of Max Inflow Inflow Balance 231 Inflow Inflow Occurrence Volume Volume Error 232 Node Type CFS CFS days hr:min 10^6 gal 10^6 gal Percent 233 ------------------------------------------------------------------------------------------------- 234 POC-1 OUTFALL 0.81 2.67 10332 16:56 11.7 39.2 0.000 235 BMP-C STORAGE 0.09 1.84 10332 16:32 20.1 27.4 0.005 236 Sto-BMP-A STORAGE 1.76 1.76 10332 16:51 7.31 7.31 0.014 237 BMP-C.2 STORAGE 0.00 1.85 10332 16:56 0 27.4 0.037 238
239
240 *********************
241 Node Flooding Summary
242 *********************
243
244 No nodes were flooded.
245
246
247 **********************
248 Storage Volume Summary
249 **********************
250
251 -------------------------------------------------------------------------------------------------- 252 Average Avg Evap Exfil Maximum Max Time of Max Maximum 253 Volume Pcnt Pcnt Pcnt Volume Pcnt Occurrence Outflow 254 Storage Unit 1000 ft3 Full Loss Loss 1000 ft3 Full days hr:min CFS 255 -------------------------------------------------------------------------------------------------- 256 BMP-C 0.001 0 0 0 2.418 79 10332 16:55 1.85 257 Sto-BMP-A 0.000 0 0 0 0.139 3 10332 16:23 1.76 258 BMP-C.2 0.015 1 0 0 0.833 59 10332 16:55 1.86 259
260
261 ***********************
262 Outfall Loading Summary
263 ***********************
264
265 ----------------------------------------------------------- 266 Flow Avg Max Total 267 Freq Flow Flow Volume 268 Outfall Node Pcnt CFS CFS 10^6 gal 269 ----------------------------------------------------------- 270 POC-1 5.34 0.07 2.67 39.153 271 ----------------------------------------------------------- 272 System 5.34 0.07 2.67 39.153 273
274
275 ********************
276 Link Flow Summary
277 ********************
278
279 ----------------------------------------------------------------------------- 280 Maximum Time of Max Maximum Max/ Max/ 281 |Flow| Occurrence |Veloc| Full Full 282 Link Type CFS days hr:min ft/sec Flow Depth 283 ----------------------------------------------------------------------------- 284 Orfice1 ORIFICE 0.97 10332 16:56 0.00 285 Orifice2 ORIFICE 0.05 10332 16:56 0.00 286 Spillway1 WEIR 0.88 10332 16:56 0.00 287 CatchBasin WEIR 1.76 10332 16:32 0.00 288 EmergencyRiser WEIR 0.00 0 00:00 0.00 289 Spillway3 WEIR 1.39 10332 16:56 0.00 290 Spillway2 WEIR 0.42 10332 16:56 0.00 291
292
293 *************************
294 Conduit Surcharge Summary
295 *************************
296
297 No conduits were surcharged.
298
299
300 Analysis begun on: Fri Mar 31 10:56:28 2023
301 Analysis ended on: Fri Mar 31 10:57:26 2023
302 Total elapsed time: 00:00:58

Excel Engineering

V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\Report\report parts\Statistics Reports\POC-1\Statistics Results-POC-1.pdf
3/31/2023 10:58:50 AM software version: 1.0.7318.27220

STATISTICS ANALYSIS OF THE
SWMM FILES FOR:

DISCHARGE NODE: POC-1

ANALYSIS DETAILS
Stream Susceptibility to Channel Erosion: High
Low Flow Threshold = (0.1)Q2 = (0.1)1.500 = Qlf = 0.1500 (cfs) Flow Control Upper Limit = Q10 = 2.100 (cfs)
Assumed time between storms (hours): 24

PRE-DEVELOPMENT SWMM FILE
SWMM file name: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060- Pre-Development.out
SWMM file time stamp: 3/30/2023 5:56:07 PM
Selected Node to Analyze: POC-1

POST-DEVELOPMENT MITIGATED SWMM FILE
SWMM file name: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060- Post-Development-1.out
SWMM file time stamp: 3/31/2023 10:57:26 AM
Selected Node to Analyze: POC-1

MITIGATED CONDITIONS RESULTS
For the Mitigated Conditions:

Peak Flow Conditions PASS
Flow Duration Conditions PASS

The Mitigated Conditions peak flow frequency curve is composed of 372 points. Of the points, 1 point(s) are above the flow control upper limit (Q10 = 2.1 (cfs)), 121 point(s) are below the low flow threshold value (Qlf = 0.15 (cfs)).

Of the points within the flow control range (Qlf to Q10), 250 point(s) have a lower peak flow rate than pre- development conditions. These points all pass. There are no points that failed, therefore the peak flow requirements have been met.

The Mitigated Conditions flow duration curve is composed of 100 flow bins (points). Each point represents the number of hours where the discharge was equal to or greater than the discharge value, but less than the next greater discharge value. Within the flow control range, comparing the post-development flow duration curve to the pre-development flow duration curve, 100 post-development curve point(s) have a lower flow duration than pre-development conditions. These points all pass. There are no points that failed, therefore the flow duration requirements have been met.

Excel Engineering

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/uni0030/uni002E/uni0035
/uni0031/uni002E/uni0030
/uni0031/uni002E/uni0035
/uni0032/uni002E/uni0030
/uni0032/uni002E/uni0035
/uni0050/uni0065/uni0061/uni006B/uni0020/uni0046/uni006C/uni006F/uni0077/uni0020/uni0028/uni0063/uni0066/uni0073/uni0029 /uni0050/uni0072/uni0065/uni0020/uni0044/uni0065/uni0076/uni0065/uni006C/uni006F/uni0070/uni006D/uni0065/uni006E/uni0074 /uni0050/uni006F/uni0073/uni0074/uni0020/uni0044/uni0065/uni0076/uni0065/uni006C/uni006F/uni0070/uni006D/uni0065/uni006E/uni0074/uni0020/uni004D/uni0069/uni0074/uni0069/uni0067/uni0061/uni0074/uni0065/uni0064 /uni0051/uni0031/uni0030/uni0020/uni0028/uni0032/uni002E/uni0031/uni0063/uni0066/uni0073/uni0029 /uni0051/uni0035/uni0020/uni0028/uni0031/uni002E/uni0039/uni0063/uni0066/uni0073/uni0029 /uni0051/uni0032/uni0020/uni0028/uni0031/uni002E/uni0035/uni0063/uni0066/uni0073/uni0029 /uni0051/uni006C/uni0066/uni0020/uni0028/uni0030/uni002E/uni0031/uni0035/uni0063/uni0066/uni0073/uni0029 ... . .... . ........... . ... . ......... . .. . ...... ,,. . . ... . ......... . . . . ~
~
-------------------------~
~

Excel Engineering

peakFlowPassFailMitigated
Compared to:
pre-development SWMM file: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Pre-Development.out pre-development time stamp: 3/30/2023 5:56:07 PM
Compare Post-Development Curve to Pre-Development Curve Flow Control Upper Limit: 2.1 (cfs)
Flow Control Lower Limit: 0.15 (cfs)
post-development SWMM file: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Post-Development-1.out post-development time stamp: 3/31/2023 10:57:26 AM
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
0 45.00 2.60 2.70 FALSE FALSE FALSE Pass- Qpost Above Q10 (2.1 (cfs)) 1 22.50 2.10 2.40 TRUE FALSE FALSE Pass- Qpost < Qpre
2 15.00 2.00 2.40 TRUE FALSE FALSE Pass- Qpost < Qpre
3 11.30 1.90 2.20 TRUE FALSE FALSE Pass- Qpost < Qpre
4 9.00 1.90 2.10 TRUE FALSE FALSE Pass- Qpost < Qpre
5 7.50 1.60 2.00 TRUE FALSE FALSE Pass- Qpost < Qpre
6 6.40 1.60 2.00 TRUE FALSE FALSE Pass- Qpost < Qpre
7 5.60 1.50 1.90 TRUE FALSE FALSE Pass- Qpost < Qpre
8 5.00 1.50 1.90 TRUE FALSE FALSE Pass- Qpost < Qpre
9 4.50 1.50 1.90 TRUE FALSE FALSE Pass- Qpost < Qpre
10 4.10 1.40 1.90 TRUE FALSE FALSE Pass- Qpost < Qpre
11 3.80 1.40 1.90 TRUE FALSE FALSE Pass- Qpost < Qpre
12 3.50 1.40 1.90 TRUE FALSE FALSE Pass- Qpost < Qpre
13 3.20 1.30 1.80 TRUE FALSE FALSE Pass- Qpost < Qpre
14 3.00 1.30 1.80 TRUE FALSE FALSE Pass- Qpost < Qpre
15 2.80 1.30 1.70 TRUE FALSE FALSE Pass- Qpost < Qpre
16 2.60 1.30 1.70 TRUE FALSE FALSE Pass- Qpost < Qpre
17 2.50 1.30 1.70 TRUE FALSE FALSE Pass- Qpost < Qpre
18 2.40 1.20 1.70 TRUE FALSE FALSE Pass- Qpost < Qpre
19 2.30 1.20 1.60 TRUE FALSE FALSE Pass- Qpost < Qpre
20 2.10 1.20 1.60 TRUE FALSE FALSE Pass- Qpost < Qpre
21 2.00 1.20 1.50 TRUE FALSE FALSE Pass- Qpost < Qpre
22 2.00 1.20 1.50 TRUE FALSE FALSE Pass- Qpost < Qpre
23 1.90 1.20 1.50 TRUE FALSE FALSE Pass- Qpost < Qpre
24 1.80 1.20 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
25 1.70 1.20 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
26 1.70 1.20 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
27 1.60 1.20 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
28 1.60 1.10 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
29 1.50 1.10 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
30 1.50 1.10 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
31 1.40 1.10 1.40 TRUE FALSE FALSE Pass- Qpost < Qpre
1/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
32 1.40 1.10 1.30 TRUE FALSE FALSE Pass- Qpost < Qpre
33 1.30 1.10 1.30 TRUE FALSE FALSE Pass- Qpost < Qpre
34 1.30 1.10 1.30 TRUE FALSE FALSE Pass- Qpost < Qpre
35 1.30 1.10 1.30 TRUE FALSE FALSE Pass- Qpost < Qpre
36 1.20 1.00 1.20 TRUE FALSE FALSE Pass- Qpost < Qpre
37 1.20 1.00 1.20 TRUE FALSE FALSE Pass- Qpost < Qpre
38 1.20 1.00 1.20 TRUE FALSE FALSE Pass- Qpost < Qpre
39 1.10 1.00 1.20 TRUE FALSE FALSE Pass- Qpost < Qpre
40 1.10 1.00 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
41 1.10 1.00 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
42 1.00 1.00 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
43 1.00 1.00 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
44 1.00 0.90 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
45 1.00 0.90 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
46 1.00 0.90 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
47 0.90 0.90 1.10 TRUE FALSE FALSE Pass- Qpost < Qpre
48 0.90 0.90 1.00 TRUE FALSE FALSE Pass- Qpost < Qpre
49 0.90 0.90 1.00 TRUE FALSE FALSE Pass- Qpost < Qpre
50 0.90 0.90 1.00 TRUE FALSE FALSE Pass- Qpost < Qpre
51 0.90 0.90 1.00 TRUE FALSE FALSE Pass- Qpost < Qpre
52 0.80 0.90 1.00 TRUE FALSE FALSE Pass- Qpost < Qpre
53 0.80 0.90 1.00 TRUE FALSE FALSE Pass- Qpost < Qpre
54 0.80 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
55 0.80 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
56 0.80 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
57 0.80 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
58 0.80 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
59 0.80 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
60 0.70 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
61 0.70 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
62 0.70 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
63 0.70 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
64 0.70 0.80 0.90 TRUE FALSE FALSE Pass- Qpost < Qpre
65 0.70 0.80 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
66 0.70 0.80 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
67 0.70 0.80 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
68 0.70 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
69 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
70 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
71 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
72 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
73 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
2/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
74 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
75 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
76 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
77 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
78 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
79 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
80 0.60 0.70 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
81 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
82 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
83 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
84 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
85 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
86 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
87 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
88 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
89 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
90 0.50 0.60 0.80 TRUE FALSE FALSE Pass- Qpost < Qpre
91 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
92 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
93 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
94 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
95 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
96 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
97 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
98 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
99 0.50 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
100 0.40 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
101 0.40 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
102 0.40 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
103 0.40 0.60 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
104 0.40 0.50 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
105 0.40 0.50 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
106 0.40 0.50 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
107 0.40 0.50 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
108 0.40 0.50 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
109 0.40 0.50 0.70 TRUE FALSE FALSE Pass- Qpost < Qpre
110 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
111 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
112 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
113 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
114 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
115 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
3/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
116 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
117 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
118 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
119 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
120 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
121 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
122 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
123 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
124 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
125 0.40 0.50 0.60 TRUE FALSE FALSE Pass- Qpost < Qpre
126 0.40 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
127 0.40 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
128 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
129 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
130 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
131 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
132 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
133 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
134 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
135 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
136 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
137 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
138 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
139 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
140 0.30 0.40 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
141 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
142 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
143 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
144 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
145 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
146 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
147 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
148 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
149 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
150 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
151 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
152 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
153 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
154 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
155 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
156 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
157 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
4/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
158 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
159 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
160 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
161 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
162 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
163 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
164 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
165 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
166 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
167 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
168 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
169 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
170 0.30 0.30 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
171 0.30 0.20 0.50 TRUE FALSE FALSE Pass- Qpost < Qpre
172 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
173 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
174 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
175 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
176 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
177 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
178 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
179 0.30 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
180 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
181 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
182 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
183 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
184 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
185 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
186 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
187 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
188 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
189 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
190 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
191 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
192 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
193 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
194 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
195 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
196 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
197 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
198 0.20 0.20 0.40 TRUE FALSE FALSE Pass- Qpost < Qpre
199 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
5/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
200 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
201 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
202 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
203 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
204 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
205 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
206 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
207 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
208 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
209 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
210 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
211 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
212 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
213 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
214 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
215 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
216 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
217 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
218 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
219 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
220 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
221 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
222 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
223 0.20 0.20 0.30 TRUE FALSE FALSE Pass- Qpost < Qpre
224 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
225 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
226 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
227 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
228 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
229 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
230 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
231 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
232 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
233 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
234 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
235 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
236 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
237 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
238 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
239 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
240 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
241 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
6/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
242 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
243 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
244 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
245 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
246 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
247 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
248 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
249 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
250 0.20 0.20 0.20 TRUE FALSE FALSE Pass- Qpost < Qpre
251 0.20 0.10 0.20 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 252 0.20 0.10 0.20 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 253 0.20 0.10 0.20 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 254 0.20 0.10 0.20 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 255 0.20 0.10 0.20 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 256 0.20 0.10 0.20 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 257 0.20 0.10 0.20 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 258 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 259 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 260 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 261 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 262 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 263 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 264 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 265 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 266 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 267 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 268 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 269 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 270 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 271 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 272 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 273 0.20 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 274 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 275 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 276 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 277 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 278 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 279 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 280 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 281 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 282 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 283 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 7/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
284 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 285 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 286 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 287 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 288 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 289 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 290 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 291 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 292 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 293 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 294 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 295 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 296 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 297 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 298 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 299 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 300 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 301 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 302 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 303 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 304 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 305 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 306 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 307 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 308 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 309 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 310 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 311 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 312 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 313 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 314 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 315 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 316 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 317 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 318 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 319 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 320 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 321 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 322 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 323 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 324 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 325 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 8/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
326 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 327 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 328 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 329 0.10 0.10 0.10 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 330 0.10 0.10 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 331 0.10 0.10 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 332 0.10 0.10 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 333 0.10 0.10 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 334 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 335 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 336 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 337 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 338 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 339 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 340 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 341 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 342 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 343 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 344 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 345 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 346 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 347 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 348 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 349 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 350 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 351 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 352 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 353 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 354 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 355 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 356 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 357 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 358 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 359 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 360 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 361 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 362 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 363 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 364 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 365 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 366 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 367 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 9/103/31/2023 10:58 AM

Excel Engineering

peakFlowPassFailMitigated
Post PT #
Rtn Prd (yrs)
Post De
v Q (cfs
)
Pre De
v Q (cfs
)
Qpo
st < Qpre
Qpo
st > Qpre
Qpo
st > 110%
Qpre
Pass/Fa
il
368 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 369 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 370 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 371 0.10 0.00 0.00 FALSE FALSE FALSE Pass- Qpost Below Qlf (0.15 (cfs)) 10/103/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 1 1993/01/06 02:00:00 1993/01/10 22:00:00 117 2.7 0.10% 45 2 1971/02/23 04:00:00 1971/02/23 19:00:00 16 2.4 0.20% 22.5 3 1986/02/14 23:00:00 1986/02/16 06:00:00 32 2.4 0.30% 15 4 1995/01/23 21:00:00 1995/01/26 05:00:00 57 2.2 0.40% 11.25 5 1995/01/03 07:00:00 1995/01/05 16:00:00 58 2.1 0.60% 9 6 1983/12/24 19:00:00 1983/12/27 22:00:00 76 2 0.70% 7.5 7 1998/02/14 02:00:00 1998/02/20 21:00:00 164 2 0.80% 6.43 8 1966/12/03 05:00:00 1966/12/07 03:00:00 95 1.9 0.90% 5.63 9 1967/11/19 03:00:00 1967/11/23 12:00:00 106 1.9 1.00% 5 10 1978/01/14 14:00:00 1978/01/16 17:00:00 52 1.9 1.10% 4.5 11 1978/03/16 18:00:00 1978/03/18 17:00:00 48 1.9 1.20% 4.09 12 1983/02/26 12:00:00 1983/03/04 12:00:00 145 1.9 1.30% 3.75 13 2007/08/26 07:00:00 2007/08/26 11:00:00 5 1.9 1.40% 3.46 14 1981/02/08 17:00:00 1981/02/10 11:00:00 43 1.8 1.50% 3.21 15 1988/04/19 23:00:00 1988/04/22 08:00:00 58 1.8 1.70% 3 16 1967/04/11 08:00:00 1967/04/12 07:00:00 24 1.7 1.80% 2.81 17 1972/11/14 12:00:00 1972/11/14 18:00:00 7 1.7 1.90% 2.65 18 1983/11/24 23:00:00 1983/11/25 06:00:00 8 1.7 2.00% 2.5 19 2007/01/29 22:00:00 2007/01/31 16:00:00 43 1.7 2.10% 2.37 20 1969/01/24 04:00:00 1969/01/27 00:00:00 69 1.6 2.20% 2.25 21 1980/01/27 20:00:00 1980/01/30 23:00:00 76 1.6 2.30% 2.14 22 1998/01/09 02:00:00 1998/01/11 04:00:00 51 1.5 2.40% 2.05 23 2004/10/17 08:00:00 2004/10/21 07:00:00 96 1.5 2.50% 1.96 24 2005/01/07 04:00:00 2005/01/12 05:00:00 122 1.5 2.70% 1.88 25 1965/11/21 22:00:00 1965/11/23 09:00:00 36 1.4 2.80% 1.8 26 1967/12/18 14:00:00 1967/12/20 12:00:00 47 1.4 2.90% 1.73 27 1980/02/13 12:00:00 1980/02/21 13:00:00 194 1.4 3.00% 1.67 28 1991/03/19 00:00:00 1991/03/21 11:00:00 60 1.4 3.10% 1.61 29 1992/02/15 05:00:00 1992/02/16 01:00:00 21 1.4 3.20% 1.55 30 1993/01/12 14:00:00 1993/01/19 03:00:00 158 1.4 3.30% 1.5 31 1993/02/07 12:00:00 1993/02/10 01:00:00 62 1.4 3.40% 1.45 32 1998/02/03 02:00:00 1998/02/04 23:00:00 46 1.4 3.50% 1.41 33 1974/12/04 03:00:00 1974/12/04 18:00:00 16 1.3 3.60% 1.36 34 1980/03/02 20:00:00 1980/03/03 21:00:00 26 1.3 3.80% 1.32 35 1985/11/24 15:00:00 1985/11/25 23:00:00 33 1.3 3.90% 1.29 36 2007/11/30 07:00:00 2007/12/01 05:00:00 23 1.3 4.00% 1.25 37 1970/03/04 21:00:00 1970/03/05 04:00:00 8 1.2 4.10% 1.22 38 1979/01/05 07:00:00 1979/01/06 11:00:00 29 1.2 4.20% 1.18 39 1981/03/19 20:00:00 1981/03/20 12:00:00 17 1.2 4.30% 1.15 Peak Flow Statistics Table Values
SWMM.out file name: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Pre-Development.out SWMM.out time stamp: 3/30/2023 5:56:07 PM
Q10: 2.100 (cfs)
Q5: 1.900 (cfs)
Q2: 1.500 (cfs)
1/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 40 2004/10/27 02:00:00 2004/10/28 13:00:00 36 1.2 4.40% 1.13 41 1969/02/05 03:00:00 1969/02/06 21:00:00 43 1.1 4.50% 1.1 42 1978/02/05 00:00:00 1978/02/07 01:00:00 50 1.1 4.60% 1.07 43 1978/12/16 22:00:00 1978/12/19 15:00:00 66 1.1 4.80% 1.05 44 1980/01/07 14:00:00 1980/01/13 04:00:00 135 1.1 4.90% 1.02 45 1981/12/30 07:00:00 1982/01/02 13:00:00 79 1.1 5.00% 1 46 1982/03/17 18:00:00 1982/03/20 11:00:00 66 1.1 5.10% 0.98 47 2003/02/25 02:00:00 2003/02/28 19:00:00 90 1.1 5.20% 0.96 48 2004/02/26 01:00:00 2004/02/28 00:00:00 48 1.1 5.30% 0.94 49 1977/05/08 10:00:00 1977/05/10 03:00:00 42 1 5.40% 0.92 50 1979/01/17 06:00:00 1979/01/18 20:00:00 39 1 5.50% 0.9 51 1982/12/22 18:00:00 1982/12/23 04:00:00 11 1 5.60% 0.88 52 1993/11/14 06:00:00 1993/11/14 21:00:00 16 1 5.70% 0.87 53 1995/03/03 05:00:00 1995/03/06 07:00:00 75 1 5.90% 0.85 54 2006/04/04 18:00:00 2006/04/05 16:00:00 23 1 6.00% 0.83 55 1965/04/07 04:00:00 1965/04/12 05:00:00 122 0.9 6.10% 0.82 56 1970/11/28 20:00:00 1970/11/30 06:00:00 35 0.9 6.20% 0.8 57 1973/02/10 22:00:00 1973/02/13 04:00:00 55 0.9 6.30% 0.79 58 1976/04/14 11:00:00 1976/04/14 14:00:00 4 0.9 6.40% 0.78 59 1976/12/30 13:00:00 1976/12/31 16:00:00 28 0.9 6.50% 0.76 60 1983/03/22 12:00:00 1983/03/24 20:00:00 57 0.9 6.60% 0.75 61 1985/11/29 06:00:00 1985/11/30 03:00:00 22 0.9 6.70% 0.74 62 1991/02/27 13:00:00 1991/03/01 16:00:00 52 0.9 6.90% 0.73 63 1992/02/06 08:00:00 1992/02/07 07:00:00 24 0.9 7.00% 0.71 64 1998/02/06 02:00:00 1998/02/09 20:00:00 91 0.9 7.10% 0.7 65 2003/02/11 02:00:00 2003/02/15 03:00:00 98 0.9 7.20% 0.69 66 1965/12/09 04:00:00 1965/12/11 02:00:00 47 0.8 7.30% 0.68 67 1967/01/22 16:00:00 1967/01/23 08:00:00 17 0.8 7.40% 0.67 68 1967/01/24 15:00:00 1967/01/25 04:00:00 14 0.8 7.50% 0.66 69 1970/02/28 13:00:00 1970/03/02 10:00:00 46 0.8 7.60% 0.65 70 1970/12/16 22:00:00 1970/12/22 12:00:00 135 0.8 7.70% 0.64 71 1973/01/16 15:00:00 1973/01/17 02:00:00 12 0.8 7.80% 0.63 72 1974/01/04 17:00:00 1974/01/09 20:00:00 124 0.8 8.00% 0.63 73 1974/03/06 19:00:00 1974/03/08 17:00:00 47 0.8 8.10% 0.62 74 1976/02/03 17:00:00 1976/02/10 15:00:00 167 0.8 8.20% 0.61 75 1976/03/01 08:00:00 1976/03/03 11:00:00 52 0.8 8.30% 0.6 76 1976/09/09 19:00:00 1976/09/10 23:00:00 29 0.8 8.40% 0.59 77 1979/03/01 07:00:00 1979/03/01 23:00:00 17 0.8 8.50% 0.58 78 1981/02/28 15:00:00 1981/03/02 19:00:00 53 0.8 8.60% 0.58 79 1983/01/27 07:00:00 1983/01/29 08:00:00 50 0.8 8.70% 0.57 80 1991/03/25 06:00:00 1991/03/27 20:00:00 63 0.8 8.80% 0.56 81 1991/12/29 15:00:00 1991/12/30 07:00:00 17 0.8 9.00% 0.56 82 1992/01/02 23:00:00 1992/01/08 02:00:00 124 0.8 9.10% 0.55 83 1994/02/17 11:00:00 1994/02/19 05:00:00 43 0.8 9.20% 0.54 84 1994/03/24 21:00:00 1994/03/25 18:00:00 22 0.8 9.30% 0.54 85 1995/02/13 10:00:00 1995/02/15 17:00:00 56 0.8 9.40% 0.53 86 1995/03/11 02:00:00 1995/03/12 04:00:00 27 0.8 9.50% 0.52 2/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 87 1996/11/21 16:00:00 1996/11/23 07:00:00 40 0.8 9.60% 0.52 88 1998/02/22 02:00:00 1998/02/25 18:00:00 89 0.8 9.70% 0.51 89 2003/04/13 15:00:00 2003/04/16 02:00:00 60 0.8 9.80% 0.51 90 2004/02/21 15:00:00 2004/02/23 11:00:00 45 0.8 9.90% 0.5 91 2005/01/03 04:00:00 2005/01/05 05:00:00 50 0.8 10.10% 0.5 92 1965/11/14 07:00:00 1965/11/18 18:00:00 108 0.7 10.20% 0.49 93 1965/12/12 06:00:00 1965/12/13 12:00:00 31 0.7 10.30% 0.48 94 1965/12/29 08:00:00 1965/12/30 02:00:00 19 0.7 10.40% 0.48 95 1966/11/07 14:00:00 1966/11/07 23:00:00 10 0.7 10.50% 0.47 96 1969/01/13 17:00:00 1969/01/14 16:00:00 24 0.7 10.60% 0.47 97 1972/12/04 12:00:00 1972/12/04 23:00:00 12 0.7 10.70% 0.46 98 1975/03/08 08:00:00 1975/03/11 17:00:00 82 0.7 10.80% 0.46 99 1978/11/13 21:00:00 1978/11/14 15:00:00 19 0.7 10.90% 0.46 100 1980/03/06 00:00:00 1980/03/06 17:00:00 18 0.7 11.00% 0.45 101 1982/03/15 12:00:00 1982/03/16 03:00:00 16 0.7 11.20% 0.45 102 1986/11/17 18:00:00 1986/11/18 06:00:00 13 0.7 11.30% 0.44 103 1987/01/04 13:00:00 1987/01/07 12:00:00 72 0.7 11.40% 0.44 104 1988/01/17 03:00:00 1988/01/18 01:00:00 23 0.7 11.50% 0.43 105 1988/12/24 20:00:00 1988/12/26 04:00:00 33 0.7 11.60% 0.43 106 1992/02/12 18:00:00 1992/02/13 10:00:00 17 0.7 11.70% 0.43 107 1994/02/07 02:00:00 1994/02/08 10:00:00 33 0.7 11.80% 0.42 108 1996/01/31 04:00:00 1996/02/01 16:00:00 37 0.7 11.90% 0.42 109 2005/02/18 04:00:00 2005/02/23 16:00:00 133 0.7 12.00% 0.41 110 2005/12/31 16:00:00 2006/01/03 02:00:00 59 0.7 12.20% 0.41 111 1968/03/07 21:00:00 1968/03/08 16:00:00 20 0.6 12.30% 0.41 112 1969/01/18 22:00:00 1969/01/22 02:00:00 77 0.6 12.40% 0.4 113 1969/02/22 02:00:00 1969/02/26 09:00:00 104 0.6 12.50% 0.4 114 1970/03/08 07:00:00 1970/03/08 22:00:00 16 0.6 12.60% 0.4 115 1971/12/24 15:00:00 1971/12/26 03:00:00 37 0.6 12.70% 0.39 116 1973/03/08 08:00:00 1973/03/08 23:00:00 16 0.6 12.80% 0.39 117 1976/11/11 22:00:00 1976/11/12 14:00:00 17 0.6 12.90% 0.39 118 1983/03/20 20:00:00 1983/03/21 06:00:00 11 0.6 13.00% 0.38 119 1983/11/20 09:00:00 1983/11/21 13:00:00 29 0.6 13.10% 0.38 120 1986/02/07 19:00:00 1986/02/08 22:00:00 28 0.6 13.30% 0.38 121 1987/11/04 15:00:00 1987/11/05 19:00:00 29 0.6 13.40% 0.37 122 1987/12/16 12:00:00 1987/12/17 20:00:00 33 0.6 13.50% 0.37 123 1998/03/25 02:00:00 1998/04/02 17:00:00 208 0.6 13.60% 0.37 124 2001/01/10 20:00:00 2001/01/12 17:00:00 46 0.6 13.70% 0.36 125 2003/03/15 02:00:00 2003/03/17 18:00:00 65 0.6 13.80% 0.36 126 2004/02/02 23:00:00 2004/02/04 09:00:00 35 0.6 13.90% 0.36 127 1964/11/17 13:00:00 1964/11/18 02:00:00 14 0.5 14.00% 0.35 128 1965/12/14 14:00:00 1965/12/16 13:00:00 48 0.5 14.10% 0.35 129 1967/03/13 11:00:00 1967/03/14 01:00:00 15 0.5 14.30% 0.35 130 1968/04/01 19:00:00 1968/04/02 13:00:00 19 0.5 14.40% 0.35 131 1971/05/07 18:00:00 1971/05/08 05:00:00 12 0.5 14.50% 0.34 132 1971/05/28 01:00:00 1971/05/29 04:00:00 28 0.5 14.60% 0.34 133 1971/12/27 13:00:00 1971/12/28 19:00:00 31 0.5 14.70% 0.34 3/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 134 1972/11/11 01:00:00 1972/11/11 12:00:00 12 0.5 14.80% 0.34 135 1972/11/16 08:00:00 1972/11/17 14:00:00 31 0.5 14.90% 0.33 136 1973/01/18 20:00:00 1973/01/19 06:00:00 11 0.5 15.00% 0.33 137 1973/03/11 11:00:00 1973/03/12 08:00:00 22 0.5 15.10% 0.33 138 1973/11/22 19:00:00 1973/11/23 05:00:00 11 0.5 15.20% 0.33 139 1975/04/08 02:00:00 1975/04/09 18:00:00 41 0.5 15.40% 0.32 140 1976/04/11 19:00:00 1976/04/13 06:00:00 36 0.5 15.50% 0.32 141 1977/08/16 14:00:00 1977/08/17 23:00:00 34 0.5 15.60% 0.32 142 1978/03/11 17:00:00 1978/03/15 11:00:00 91 0.5 15.70% 0.32 143 1979/03/17 05:00:00 1979/03/17 11:00:00 7 0.5 15.80% 0.32 144 1979/03/27 03:00:00 1979/03/29 12:00:00 58 0.5 15.90% 0.31 145 1980/03/10 14:00:00 1980/03/10 23:00:00 10 0.5 16.00% 0.31 146 1982/02/09 16:00:00 1982/02/11 00:00:00 33 0.5 16.10% 0.31 147 1982/11/09 13:00:00 1982/11/11 04:00:00 40 0.5 16.20% 0.31 148 1982/11/29 15:00:00 1982/11/30 22:00:00 32 0.5 16.40% 0.3 149 1983/02/05 17:00:00 1983/02/08 14:00:00 70 0.5 16.50% 0.3 150 1983/03/17 04:00:00 1983/03/19 02:00:00 47 0.5 16.60% 0.3 151 1983/04/29 02:00:00 1983/05/01 10:00:00 57 0.5 16.70% 0.3 152 1985/11/11 03:00:00 1985/11/12 11:00:00 33 0.5 16.80% 0.3 153 1986/03/08 15:00:00 1986/03/14 05:00:00 135 0.5 16.90% 0.29 154 1986/03/15 20:00:00 1986/03/17 16:00:00 45 0.5 17.00% 0.29 155 1986/04/06 05:00:00 1986/04/06 22:00:00 18 0.5 17.10% 0.29 156 1986/09/23 20:00:00 1986/09/26 09:00:00 62 0.5 17.20% 0.29 157 1988/11/25 05:00:00 1988/11/26 15:00:00 35 0.5 17.30% 0.29 158 1988/12/21 01:00:00 1988/12/21 11:00:00 11 0.5 17.50% 0.29 159 1990/01/13 03:00:00 1990/01/17 16:00:00 110 0.5 17.60% 0.28 160 1992/12/07 08:00:00 1992/12/08 02:00:00 19 0.5 17.70% 0.28 161 1994/02/20 12:00:00 1994/02/21 00:00:00 13 0.5 17.80% 0.28 162 1994/04/28 00:00:00 1994/04/28 03:00:00 4 0.5 17.90% 0.28 163 1995/03/23 09:00:00 1995/03/24 07:00:00 23 0.5 18.00% 0.28 164 1996/12/09 15:00:00 1996/12/12 00:00:00 58 0.5 18.10% 0.27 165 1997/01/12 13:00:00 1997/01/14 03:00:00 39 0.5 18.20% 0.27 166 2002/12/20 02:00:00 2002/12/22 00:00:00 47 0.5 18.30% 0.27 167 2004/03/02 00:00:00 2004/03/03 11:00:00 36 0.5 18.50% 0.27 168 2004/12/28 06:00:00 2004/12/31 21:00:00 88 0.5 18.60% 0.27 169 2006/03/10 13:00:00 2006/03/11 17:00:00 29 0.5 18.70% 0.27 170 2008/01/05 01:00:00 2008/01/07 10:00:00 58 0.5 18.80% 0.27 171 2008/02/03 06:00:00 2008/02/04 05:00:00 24 0.5 18.90% 0.26 172 2008/02/22 02:00:00 2008/02/22 16:00:00 15 0.5 19.00% 0.26 173 1965/03/31 14:00:00 1965/04/05 15:00:00 122 0.4 19.10% 0.26 174 1973/03/20 08:00:00 1973/03/22 05:00:00 46 0.4 19.20% 0.26 175 1978/03/30 14:00:00 1978/04/01 01:00:00 36 0.4 19.30% 0.26 176 1978/04/07 01:00:00 1978/04/08 12:00:00 36 0.4 19.40% 0.26 177 1979/01/31 00:00:00 1979/02/02 19:00:00 68 0.4 19.60% 0.25 178 1979/02/21 01:00:00 1979/02/22 01:00:00 25 0.4 19.70% 0.25 179 1980/01/18 04:00:00 1980/01/19 04:00:00 25 0.4 19.80% 0.25 180 1982/01/20 03:00:00 1982/01/21 18:00:00 40 0.4 19.90% 0.25 4/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 181 1989/03/25 09:00:00 1989/03/26 13:00:00 29 0.4 20.00% 0.25 182 1992/03/02 01:00:00 1992/03/03 20:00:00 44 0.4 20.10% 0.25 183 1992/12/29 12:00:00 1992/12/30 00:00:00 13 0.4 20.20% 0.25 184 1993/01/31 01:00:00 1993/01/31 06:00:00 6 0.4 20.30% 0.25 185 1993/02/18 13:00:00 1993/02/20 23:00:00 59 0.4 20.40% 0.24 186 1993/03/28 02:00:00 1993/03/28 06:00:00 5 0.4 20.60% 0.24 187 1995/01/07 16:00:00 1995/01/08 12:00:00 21 0.4 20.70% 0.24 188 1995/01/10 16:00:00 1995/01/12 23:00:00 56 0.4 20.80% 0.24 189 1995/04/18 08:00:00 1995/04/19 14:00:00 31 0.4 20.90% 0.24 190 1995/12/20 17:00:00 1995/12/20 22:00:00 6 0.4 21.00% 0.24 191 1996/01/21 18:00:00 1996/01/22 14:00:00 21 0.4 21.10% 0.24 192 1996/02/25 09:00:00 1996/02/26 14:00:00 30 0.4 21.20% 0.23 193 2000/02/21 02:00:00 2000/02/23 03:00:00 50 0.4 21.30% 0.23 194 2000/10/29 20:00:00 2000/10/30 03:00:00 8 0.4 21.40% 0.23 195 2001/11/24 02:00:00 2001/11/25 04:00:00 27 0.4 21.50% 0.23 196 2002/11/08 02:00:00 2002/11/10 19:00:00 66 0.4 21.70% 0.23 197 2003/12/24 23:00:00 2003/12/26 00:00:00 26 0.4 21.80% 0.23 198 2006/02/27 19:00:00 2006/02/28 15:00:00 21 0.4 21.90% 0.23 199 2008/02/14 11:00:00 2008/02/14 19:00:00 9 0.4 22.00% 0.23 200 1969/02/18 09:00:00 1969/02/20 07:00:00 47 0.3 22.10% 0.23 201 1969/03/12 21:00:00 1969/03/13 21:00:00 25 0.3 22.20% 0.22 202 1969/03/21 13:00:00 1969/03/21 23:00:00 11 0.3 22.30% 0.22 203 1975/12/11 23:00:00 1975/12/12 23:00:00 25 0.3 22.40% 0.22 204 1978/01/30 07:00:00 1978/01/31 07:00:00 25 0.3 22.50% 0.22 205 1978/09/05 17:00:00 1978/09/06 01:00:00 9 0.3 22.70% 0.22 206 1978/11/21 18:00:00 1978/11/21 23:00:00 6 0.3 22.80% 0.22 207 1979/10/19 22:00:00 1979/10/21 14:00:00 41 0.3 22.90% 0.22 208 1981/02/25 05:00:00 1981/02/26 03:00:00 23 0.3 23.00% 0.22 209 1981/11/28 06:00:00 1981/11/29 13:00:00 32 0.3 23.10% 0.22 210 1983/02/24 09:00:00 1983/02/25 03:00:00 19 0.3 23.20% 0.21 211 1983/12/03 15:00:00 1983/12/04 05:00:00 15 0.3 23.30% 0.21 212 1985/12/02 12:00:00 1985/12/03 16:00:00 29 0.3 23.40% 0.21 213 1986/12/06 03:00:00 1986/12/07 11:00:00 33 0.3 23.50% 0.21 214 1987/12/04 21:00:00 1987/12/05 03:00:00 7 0.3 23.60% 0.21 215 1990/06/09 07:00:00 1990/06/10 11:00:00 29 0.3 23.80% 0.21 216 1992/03/20 16:00:00 1992/03/23 15:00:00 72 0.3 23.90% 0.21 217 1993/02/23 19:00:00 1993/02/24 10:00:00 16 0.3 24.00% 0.21 218 1997/01/25 15:00:00 1997/01/27 11:00:00 45 0.3 24.10% 0.21 219 1998/04/11 02:00:00 1998/04/12 20:00:00 43 0.3 24.20% 0.21 220 1998/05/12 02:00:00 1998/05/13 19:00:00 42 0.3 24.30% 0.21 221 2002/03/17 20:00:00 2002/03/18 06:00:00 11 0.3 24.40% 0.2 222 2005/02/11 01:00:00 2005/02/13 09:00:00 57 0.3 24.50% 0.2 223 2005/03/22 19:00:00 2005/03/23 02:00:00 8 0.3 24.60% 0.2 224 2005/04/28 07:00:00 2005/04/29 03:00:00 21 0.3 24.80% 0.2 225 2006/03/28 02:00:00 2006/03/29 10:00:00 33 0.3 24.90% 0.2 226 1964/12/27 07:00:00 1964/12/29 10:00:00 52 0.2 25.00% 0.2 227 1965/02/06 00:00:00 1965/02/07 04:00:00 29 0.2 25.10% 0.2 5/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 228 1965/11/24 19:00:00 1965/11/25 18:00:00 24 0.2 25.20% 0.2 229 1967/04/21 12:00:00 1967/04/22 07:00:00 20 0.2 25.30% 0.2 230 1969/01/28 01:00:00 1969/01/29 00:00:00 24 0.2 25.40% 0.2 231 1970/03/06 19:00:00 1970/03/07 04:00:00 10 0.2 25.50% 0.2 232 1970/03/11 10:00:00 1970/03/12 07:00:00 22 0.2 25.60% 0.19 233 1970/10/03 14:00:00 1970/10/03 18:00:00 5 0.2 25.70% 0.19 234 1972/12/07 04:00:00 1972/12/09 06:00:00 51 0.2 25.90% 0.19 235 1973/02/27 23:00:00 1973/02/28 09:00:00 11 0.2 26.00% 0.19 236 1973/03/04 00:00:00 1973/03/07 04:00:00 77 0.2 26.10% 0.19 237 1974/04/02 01:00:00 1974/04/02 13:00:00 13 0.2 26.20% 0.19 238 1974/10/28 05:00:00 1974/10/29 17:00:00 37 0.2 26.30% 0.19 239 1975/02/09 06:00:00 1975/02/10 06:00:00 25 0.2 26.40% 0.19 240 1975/04/05 21:00:00 1975/04/06 23:00:00 27 0.2 26.50% 0.19 241 1976/04/15 15:00:00 1976/04/15 23:00:00 9 0.2 26.60% 0.19 242 1976/10/22 20:00:00 1976/10/23 17:00:00 22 0.2 26.70% 0.19 243 1977/01/03 12:00:00 1977/01/04 04:00:00 17 0.2 26.90% 0.19 244 1977/03/24 11:00:00 1977/03/25 15:00:00 29 0.2 27.00% 0.18 245 1977/12/25 11:00:00 1977/12/29 19:00:00 105 0.2 27.10% 0.18 246 1978/01/10 17:00:00 1978/01/11 00:00:00 8 0.2 27.20% 0.18 247 1978/03/22 04:00:00 1978/03/23 16:00:00 37 0.2 27.30% 0.18 248 1979/03/18 14:00:00 1979/03/21 09:00:00 68 0.2 27.40% 0.18 249 1980/03/25 22:00:00 1980/03/26 04:00:00 7 0.2 27.50% 0.18 250 1980/12/04 13:00:00 1980/12/05 05:00:00 17 0.2 27.60% 0.18 251 1981/03/04 07:00:00 1981/03/05 18:00:00 36 0.2 27.70% 0.18 252 1982/03/28 18:00:00 1982/03/28 21:00:00 4 0.2 27.80% 0.18 253 1982/04/01 14:00:00 1982/04/03 11:00:00 46 0.2 28.00% 0.18 254 1985/12/09 16:00:00 1985/12/11 11:00:00 44 0.2 28.10% 0.18 255 1987/10/22 16:00:00 1987/10/23 07:00:00 16 0.2 28.20% 0.18 256 1991/01/09 09:00:00 1991/01/09 19:00:00 11 0.2 28.30% 0.18 257 1994/03/19 02:00:00 1994/03/20 11:00:00 34 0.2 28.40% 0.18 258 1994/04/25 15:00:00 1994/04/26 23:00:00 33 0.2 28.50% 0.17 259 1994/12/24 05:00:00 1994/12/25 10:00:00 30 0.2 28.60% 0.17 260 1995/03/21 09:00:00 1995/03/21 18:00:00 10 0.2 28.70% 0.17 261 1995/04/16 06:00:00 1995/04/17 01:00:00 20 0.2 28.80% 0.17 262 1995/12/23 10:00:00 1995/12/23 15:00:00 6 0.2 29.00% 0.17 263 1996/02/27 21:00:00 1996/02/28 01:00:00 5 0.2 29.10% 0.17 264 1997/04/03 17:00:00 1997/04/04 13:00:00 21 0.2 29.20% 0.17 265 2000/02/13 02:00:00 2000/02/14 19:00:00 42 0.2 29.30% 0.17 266 2001/12/21 02:00:00 2001/12/22 04:00:00 27 0.2 29.40% 0.17 267 2002/12/16 02:00:00 2002/12/17 20:00:00 43 0.2 29.50% 0.17 268 2006/03/20 04:00:00 2006/03/21 08:00:00 29 0.2 29.60% 0.17 269 2006/05/22 04:00:00 2006/05/22 13:00:00 10 0.2 29.70% 0.17 270 2007/12/07 04:00:00 2007/12/08 23:00:00 44 0.2 29.80% 0.17 271 2008/01/23 19:00:00 2008/01/24 11:00:00 17 0.2 29.90% 0.17 272 1964/09/24 14:00:00 1964/09/24 16:00:00 3 0.1 30.10% 0.17 273 1964/10/15 09:00:00 1964/10/15 17:00:00 9 0.1 30.20% 0.17 274 1964/11/09 12:00:00 1964/11/10 21:00:00 34 0.1 30.30% 0.16 6/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 275 1964/11/12 03:00:00 1964/11/12 08:00:00 6 0.1 30.40% 0.16 276 1965/01/24 06:00:00 1965/01/24 13:00:00 8 0.1 30.50% 0.16 277 1965/03/11 07:00:00 1965/03/11 18:00:00 12 0.1 30.60% 0.16 278 1966/02/06 10:00:00 1966/02/08 03:00:00 42 0.1 30.70% 0.16 279 1966/10/04 00:00:00 1966/10/05 17:00:00 42 0.1 30.80% 0.16 280 1966/10/10 12:00:00 1966/10/10 16:00:00 5 0.1 30.90% 0.16 281 1967/03/04 00:00:00 1967/03/04 13:00:00 14 0.1 31.00% 0.16 282 1967/03/31 10:00:00 1967/04/02 08:00:00 47 0.1 31.20% 0.16 283 1967/04/04 16:00:00 1967/04/04 21:00:00 6 0.1 31.30% 0.16 284 1967/04/18 19:00:00 1967/04/19 22:00:00 28 0.1 31.40% 0.16 285 1967/08/31 02:00:00 1967/08/31 09:00:00 8 0.1 31.50% 0.16 286 1967/11/30 16:00:00 1967/12/01 00:00:00 9 0.1 31.60% 0.16 287 1967/12/13 10:00:00 1967/12/13 17:00:00 8 0.1 31.70% 0.16 288 1967/12/16 13:00:00 1967/12/17 06:00:00 18 0.1 31.80% 0.16 289 1968/01/27 07:00:00 1968/01/28 11:00:00 29 0.1 31.90% 0.16 290 1968/02/13 09:00:00 1968/02/14 02:00:00 18 0.1 32.00% 0.16 291 1968/03/18 13:00:00 1968/03/18 17:00:00 5 0.1 32.20% 0.16 292 1968/07/09 21:00:00 1968/07/10 00:00:00 4 0.1 32.30% 0.15 293 1968/11/15 06:00:00 1968/11/15 22:00:00 17 0.1 32.40% 0.15 294 1968/12/19 14:00:00 1968/12/20 14:00:00 25 0.1 32.50% 0.15 295 1968/12/25 18:00:00 1968/12/26 14:00:00 21 0.1 32.60% 0.15 296 1969/02/15 18:00:00 1969/02/16 00:00:00 7 0.1 32.70% 0.15 297 1969/02/28 22:00:00 1969/03/01 05:00:00 8 0.1 32.80% 0.15 298 1969/03/10 02:00:00 1969/03/11 12:00:00 35 0.1 32.90% 0.15 299 1969/04/05 20:00:00 1969/04/05 23:00:00 4 0.1 33.00% 0.15 300 1969/11/06 18:00:00 1969/11/07 05:00:00 12 0.1 33.10% 0.15 301 1969/11/10 00:00:00 1969/11/10 05:00:00 6 0.1 33.30% 0.15 302 1969/12/08 19:00:00 1969/12/09 04:00:00 10 0.1 33.40% 0.15 303 1970/01/11 14:00:00 1970/01/12 08:00:00 19 0.1 33.50% 0.15 304 1970/01/16 16:00:00 1970/01/16 23:00:00 8 0.1 33.60% 0.15 305 1970/02/10 01:00:00 1970/02/11 09:00:00 33 0.1 33.70% 0.15 306 1970/04/30 09:00:00 1970/04/30 11:00:00 3 0.1 33.80% 0.15 307 1970/11/25 23:00:00 1970/11/26 14:00:00 16 0.1 33.90% 0.15 308 1970/12/09 05:00:00 1970/12/09 15:00:00 11 0.1 34.00% 0.15 309 1971/01/02 04:00:00 1971/01/02 22:00:00 19 0.1 34.10% 0.15 310 1971/01/12 19:00:00 1971/01/13 03:00:00 9 0.1 34.30% 0.15 311 1971/02/16 16:00:00 1971/02/17 13:00:00 22 0.1 34.40% 0.15 312 1971/03/13 06:00:00 1971/03/13 20:00:00 15 0.1 34.50% 0.14 313 1971/04/14 11:00:00 1971/04/14 17:00:00 7 0.1 34.60% 0.14 314 1971/04/15 22:00:00 1971/04/16 11:00:00 14 0.1 34.70% 0.14 315 1971/04/23 07:00:00 1971/04/23 11:00:00 5 0.1 34.80% 0.14 316 1971/10/16 04:00:00 1971/10/17 14:00:00 35 0.1 34.90% 0.14 317 1971/12/03 00:00:00 1971/12/04 05:00:00 30 0.1 35.00% 0.14 318 1971/12/07 01:00:00 1971/12/07 06:00:00 6 0.1 35.10% 0.14 319 1971/12/22 05:00:00 1971/12/23 07:00:00 27 0.1 35.20% 0.14 320 1971/12/31 04:00:00 1971/12/31 10:00:00 7 0.1 35.40% 0.14 321 1972/01/09 09:00:00 1972/01/10 04:00:00 20 0.1 35.50% 0.14 7/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 322 1972/04/30 04:00:00 1972/04/30 12:00:00 9 0.1 35.60% 0.14 323 1972/05/19 04:00:00 1972/05/20 15:00:00 36 0.1 35.70% 0.14 324 1972/10/19 03:00:00 1972/10/20 18:00:00 40 0.1 35.80% 0.14 325 1973/01/04 01:00:00 1973/01/04 21:00:00 21 0.1 35.90% 0.14 326 1973/01/09 10:00:00 1973/01/10 05:00:00 20 0.1 36.00% 0.14 327 1973/02/03 13:00:00 1973/02/04 00:00:00 12 0.1 36.10% 0.14 328 1973/02/06 01:00:00 1973/02/06 06:00:00 6 0.1 36.20% 0.14 329 1973/03/13 12:00:00 1973/03/14 00:00:00 13 0.1 36.40% 0.14 330 1973/04/30 05:00:00 1973/04/30 13:00:00 9 0.1 36.50% 0.14 331 1973/11/17 06:00:00 1973/11/18 14:00:00 33 0.1 36.60% 0.14 332 1973/12/01 15:00:00 1973/12/01 19:00:00 5 0.1 36.70% 0.14 333 1974/01/01 04:00:00 1974/01/02 01:00:00 22 0.1 36.80% 0.14 334 1974/01/20 17:00:00 1974/01/21 02:00:00 10 0.1 36.90% 0.14 335 1974/03/02 10:00:00 1974/03/03 16:00:00 31 0.1 37.00% 0.13 336 1974/03/27 09:00:00 1974/03/27 13:00:00 5 0.1 37.10% 0.13 337 1974/12/28 06:00:00 1974/12/29 14:00:00 33 0.1 37.20% 0.13 338 1975/01/30 18:00:00 1975/01/31 01:00:00 8 0.1 37.30% 0.13 339 1975/02/03 09:00:00 1975/02/05 12:00:00 52 0.1 37.50% 0.13 340 1975/03/05 14:00:00 1975/03/06 18:00:00 29 0.1 37.60% 0.13 341 1975/03/14 02:00:00 1975/03/14 14:00:00 13 0.1 37.70% 0.13 342 1975/03/22 08:00:00 1975/03/22 13:00:00 6 0.1 37.80% 0.13 343 1975/11/27 17:00:00 1975/11/29 01:00:00 33 0.1 37.90% 0.13 344 1976/11/27 04:00:00 1976/11/27 09:00:00 6 0.1 38.00% 0.13 345 1977/01/06 19:00:00 1977/01/07 11:00:00 17 0.1 38.10% 0.13 346 1977/01/28 17:00:00 1977/01/28 23:00:00 7 0.1 38.20% 0.13 347 1977/02/22 01:00:00 1977/02/22 05:00:00 5 0.1 38.30% 0.13 348 1977/03/16 12:00:00 1977/03/17 03:00:00 16 0.1 38.50% 0.13 349 1977/12/18 01:00:00 1977/12/18 11:00:00 11 0.1 38.60% 0.13 350 1977/12/23 03:00:00 1977/12/23 10:00:00 8 0.1 38.70% 0.13 351 1978/04/15 20:00:00 1978/04/16 01:00:00 6 0.1 38.80% 0.13 352 1978/11/10 18:00:00 1978/11/12 06:00:00 37 0.1 38.90% 0.13 353 1978/11/23 07:00:00 1978/11/23 16:00:00 10 0.1 39.00% 0.13 354 1979/01/09 08:00:00 1979/01/09 17:00:00 10 0.1 39.10% 0.13 355 1979/01/15 14:00:00 1979/01/16 02:00:00 13 0.1 39.20% 0.13 356 1979/02/14 03:00:00 1979/02/14 08:00:00 6 0.1 39.30% 0.13 357 1979/02/23 03:00:00 1979/02/23 11:00:00 9 0.1 39.40% 0.13 358 1979/11/07 19:00:00 1979/11/09 04:00:00 34 0.1 39.60% 0.13 359 1980/03/21 19:00:00 1980/03/22 03:00:00 9 0.1 39.70% 0.13 360 1980/04/22 15:00:00 1980/04/23 06:00:00 16 0.1 39.80% 0.13 361 1980/05/10 11:00:00 1980/05/10 14:00:00 4 0.1 39.90% 0.13 362 1980/12/07 11:00:00 1980/12/07 16:00:00 6 0.1 40.00% 0.12 363 1981/01/28 06:00:00 1981/01/30 23:00:00 66 0.1 40.10% 0.12 364 1981/03/26 22:00:00 1981/03/27 02:00:00 5 0.1 40.20% 0.12 365 1981/10/11 06:00:00 1981/10/11 10:00:00 5 0.1 40.30% 0.12 366 1981/11/26 18:00:00 1981/11/27 05:00:00 12 0.1 40.40% 0.12 367 1982/01/05 04:00:00 1982/01/05 18:00:00 15 0.1 40.60% 0.12 368 1982/01/10 18:00:00 1982/01/11 01:00:00 8 0.1 40.70% 0.12 8/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 369 1982/01/28 17:00:00 1982/01/29 03:00:00 11 0.1 40.80% 0.12 370 1982/03/26 21:00:00 1982/03/27 09:00:00 13 0.1 40.90% 0.12 371 1982/09/26 01:00:00 1982/09/26 19:00:00 19 0.1 41.00% 0.12 372 1982/11/19 02:00:00 1982/11/19 16:00:00 15 0.1 41.10% 0.12 373 1982/12/07 23:00:00 1982/12/10 01:00:00 51 0.1 41.20% 0.12 374 1983/01/19 04:00:00 1983/01/19 11:00:00 8 0.1 41.30% 0.12 375 1983/01/23 00:00:00 1983/01/23 08:00:00 9 0.1 41.40% 0.12 376 1983/01/24 18:00:00 1983/01/24 23:00:00 6 0.1 41.50% 0.12 377 1983/02/02 12:00:00 1983/02/02 23:00:00 12 0.1 41.70% 0.12 378 1983/03/06 03:00:00 1983/03/06 15:00:00 13 0.1 41.80% 0.12 379 1983/04/17 22:00:00 1983/04/18 07:00:00 10 0.1 41.90% 0.12 380 1983/04/20 01:00:00 1983/04/21 11:00:00 35 0.1 42.00% 0.12 381 1983/08/16 15:00:00 1983/08/16 19:00:00 5 0.1 42.10% 0.12 382 1983/10/01 04:00:00 1983/10/01 21:00:00 18 0.1 42.20% 0.12 383 1983/10/07 07:00:00 1983/10/07 13:00:00 7 0.1 42.30% 0.12 384 1983/11/11 22:00:00 1983/11/13 07:00:00 34 0.1 42.40% 0.12 385 1983/12/09 18:00:00 1983/12/10 00:00:00 7 0.1 42.50% 0.12 386 1984/04/06 06:00:00 1984/04/06 17:00:00 12 0.1 42.70% 0.12 387 1984/12/07 23:00:00 1984/12/08 05:00:00 7 0.1 42.80% 0.12 388 1984/12/14 14:00:00 1984/12/14 18:00:00 5 0.1 42.90% 0.12 389 1985/02/01 15:00:00 1985/02/03 19:00:00 53 0.1 43.00% 0.12 390 1985/02/09 05:00:00 1985/02/09 18:00:00 14 0.1 43.10% 0.12 391 1985/02/20 20:00:00 1985/02/21 00:00:00 5 0.1 43.20% 0.12 392 1985/03/02 13:00:00 1985/03/03 04:00:00 16 0.1 43.30% 0.12 393 1985/03/27 08:00:00 1985/03/28 12:00:00 29 0.1 43.40% 0.12 394 1985/09/18 08:00:00 1985/09/18 14:00:00 7 0.1 43.50% 0.11 395 1985/10/07 14:00:00 1985/10/07 17:00:00 4 0.1 43.60% 0.11 396 1985/10/09 12:00:00 1985/10/09 22:00:00 11 0.1 43.80% 0.11 397 1986/01/30 01:00:00 1986/02/01 00:00:00 48 0.1 43.90% 0.11 398 1986/07/19 12:00:00 1986/07/19 18:00:00 7 0.1 44.00% 0.11 399 1986/10/08 16:00:00 1986/10/11 09:00:00 66 0.1 44.10% 0.11 400 1987/02/23 13:00:00 1987/02/26 06:00:00 66 0.1 44.20% 0.11 401 1987/04/03 04:00:00 1987/04/04 02:00:00 23 0.1 44.30% 0.11 402 1987/10/12 18:00:00 1987/10/12 23:00:00 6 0.1 44.40% 0.11 403 1987/10/31 00:00:00 1987/11/01 01:00:00 26 0.1 44.50% 0.11 404 1987/11/02 03:00:00 1987/11/02 07:00:00 5 0.1 44.60% 0.11 405 1988/01/05 13:00:00 1988/01/05 22:00:00 10 0.1 44.80% 0.11 406 1988/02/01 01:00:00 1988/02/02 21:00:00 45 0.1 44.90% 0.11 407 1988/02/29 22:00:00 1988/03/02 05:00:00 32 0.1 45.00% 0.11 408 1988/04/14 18:00:00 1988/04/15 03:00:00 10 0.1 45.10% 0.11 409 1988/11/14 05:00:00 1988/11/14 13:00:00 9 0.1 45.20% 0.11 410 1989/01/05 17:00:00 1989/01/06 05:00:00 13 0.1 45.30% 0.11 411 1989/10/21 23:00:00 1989/10/22 08:00:00 10 0.1 45.40% 0.11 412 1990/01/02 01:00:00 1990/01/02 15:00:00 15 0.1 45.50% 0.11 413 1990/01/31 00:00:00 1990/01/31 07:00:00 8 0.1 45.60% 0.11 414 1990/02/04 11:00:00 1990/02/04 15:00:00 5 0.1 45.70% 0.11 415 1990/02/17 10:00:00 1990/02/19 10:00:00 49 0.1 45.90% 0.11 9/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 416 1990/03/11 01:00:00 1990/03/11 06:00:00 6 0.1 46.00% 0.11 417 1990/04/04 09:00:00 1990/04/05 14:00:00 30 0.1 46.10% 0.11 418 1990/05/28 04:00:00 1990/05/29 06:00:00 27 0.1 46.20% 0.11 419 1990/11/19 22:00:00 1990/11/20 09:00:00 12 0.1 46.30% 0.11 420 1990/11/26 02:00:00 1990/11/26 11:00:00 10 0.1 46.40% 0.11 421 1991/03/13 17:00:00 1991/03/15 23:00:00 55 0.1 46.50% 0.11 422 1991/10/26 20:00:00 1991/10/27 04:00:00 9 0.1 46.60% 0.11 423 1991/12/28 00:00:00 1991/12/28 07:00:00 8 0.1 46.70% 0.11 424 1992/02/09 23:00:00 1992/02/10 05:00:00 7 0.1 46.90% 0.11 425 1992/03/26 16:00:00 1992/03/26 22:00:00 7 0.1 47.00% 0.11 426 1992/12/17 22:00:00 1992/12/18 08:00:00 11 0.1 47.10% 0.11 427 1992/12/27 16:00:00 1992/12/28 08:00:00 17 0.1 47.20% 0.11 428 1993/03/26 00:00:00 1993/03/26 22:00:00 23 0.1 47.30% 0.11 429 1993/11/22 22:00:00 1993/11/23 07:00:00 10 0.1 47.40% 0.11 430 1993/12/11 16:00:00 1993/12/12 06:00:00 15 0.1 47.50% 0.11 431 1993/12/14 17:00:00 1993/12/15 12:00:00 20 0.1 47.60% 0.1 432 1994/01/25 00:00:00 1994/01/27 16:00:00 65 0.1 47.70% 0.1 433 1994/02/03 20:00:00 1994/02/05 07:00:00 36 0.1 47.80% 0.1 434 1994/03/06 05:00:00 1994/03/07 16:00:00 36 0.1 48.00% 0.1 435 1994/04/09 05:00:00 1994/04/09 16:00:00 12 0.1 48.10% 0.1 436 1994/11/10 11:00:00 1994/11/10 16:00:00 6 0.1 48.20% 0.1 437 1995/06/15 21:00:00 1995/06/17 15:00:00 43 0.1 48.30% 0.1 438 1996/03/04 17:00:00 1996/03/05 06:00:00 14 0.1 48.40% 0.1 439 1996/03/12 17:00:00 1996/03/14 10:00:00 42 0.1 48.50% 0.1 440 1996/04/18 00:00:00 1996/04/18 09:00:00 10 0.1 48.60% 0.1 441 1996/10/30 13:00:00 1996/10/30 20:00:00 8 0.1 48.70% 0.1 442 1997/01/05 09:00:00 1997/01/05 19:00:00 11 0.1 48.80% 0.1 443 1997/01/15 18:00:00 1997/01/16 00:00:00 7 0.1 49.00% 0.1 444 1997/01/23 03:00:00 1997/01/24 06:00:00 28 0.1 49.10% 0.1 445 1997/02/27 11:00:00 1997/02/28 05:00:00 19 0.1 49.20% 0.1 446 1997/12/06 02:00:00 1997/12/08 04:00:00 51 0.1 49.30% 0.1 447 1998/01/29 02:00:00 1998/01/30 04:00:00 27 0.1 49.40% 0.1 448 2000/02/17 02:00:00 2000/02/18 03:00:00 26 0.1 49.50% 0.1 449 2000/04/17 16:00:00 2000/04/18 11:00:00 20 0.1 49.60% 0.1 450 2001/01/26 11:00:00 2001/01/28 09:00:00 47 0.1 49.70% 0.1 451 2001/04/21 00:00:00 2001/04/21 15:00:00 16 0.1 49.80% 0.1 452 2001/05/29 15:00:00 2001/05/29 17:00:00 3 0.1 49.90% 0.1 453 2001/12/09 02:00:00 2001/12/10 04:00:00 27 0.1 50.10% 0.1 454 2002/03/07 11:00:00 2002/03/08 04:00:00 18 0.1 50.20% 0.1 455 2002/11/29 02:00:00 2002/11/30 18:00:00 41 0.1 50.30% 0.1 456 2003/05/03 02:00:00 2003/05/04 02:00:00 25 0.1 50.40% 0.1 457 2003/11/12 03:00:00 2003/11/12 15:00:00 13 0.1 50.50% 0.1 458 2004/01/28 05:00:00 2004/01/28 10:00:00 6 0.1 50.60% 0.1 459 2004/02/18 16:00:00 2004/02/18 21:00:00 6 0.1 50.70% 0.1 460 2004/04/01 22:00:00 2004/04/02 18:00:00 21 0.1 50.80% 0.1 461 2004/04/17 13:00:00 2004/04/17 17:00:00 5 0.1 50.90% 0.1 462 2004/11/21 05:00:00 2004/11/21 11:00:00 7 0.1 51.00% 0.1 10/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 463 2004/11/29 12:00:00 2004/11/29 15:00:00 4 0.1 51.20% 0.1 464 2004/12/04 14:00:00 2004/12/05 21:00:00 32 0.1 51.30% 0.1 465 2005/01/28 15:00:00 2005/01/29 08:00:00 18 0.1 51.40% 0.1 466 2005/03/04 15:00:00 2005/03/05 06:00:00 16 0.1 51.50% 0.1 467 2005/09/20 02:00:00 2005/09/20 05:00:00 4 0.1 51.60% 0.1 468 2005/10/16 16:00:00 2005/10/18 13:00:00 46 0.1 51.70% 0.1 469 2006/03/17 20:00:00 2006/03/19 03:00:00 32 0.1 51.80% 0.1 470 2006/04/14 13:00:00 2006/04/15 11:00:00 23 0.1 51.90% 0.1 471 2006/10/13 20:00:00 2006/10/14 15:00:00 20 0.1 52.00% 0.1 472 2006/12/09 22:00:00 2006/12/11 04:00:00 31 0.1 52.20% 0.1 473 2006/12/16 20:00:00 2006/12/17 11:00:00 16 0.1 52.30% 0.1 474 2007/02/12 22:00:00 2007/02/14 02:00:00 29 0.1 52.40% 0.1 475 2007/02/19 01:00:00 2007/02/19 19:00:00 19 0.1 52.50% 0.1 476 2007/02/28 05:00:00 2007/02/28 08:00:00 4 0.1 52.60% 0.1 477 2007/04/20 14:00:00 2007/04/20 18:00:00 5 0.1 52.70% 0.09 478 2007/12/20 22:00:00 2007/12/21 07:00:00 10 0.1 52.80% 0.09 479 2008/01/26 21:00:00 2008/01/28 16:00:00 44 0.1 52.90% 0.09 480 1964/11/26 12:00:00 1964/11/26 19:00:00 8 0 53.00% 0.09 481 1965/01/07 10:00:00 1965/01/07 17:00:00 8 0 53.10% 0.09 482 1965/03/07 01:00:00 1965/03/07 11:00:00 11 0 53.30% 0.09 483 1965/03/13 06:00:00 1965/03/13 12:00:00 7 0 53.40% 0.09 484 1965/03/15 02:00:00 1965/03/15 07:00:00 6 0 53.50% 0.09 485 1965/03/24 09:00:00 1965/03/24 19:00:00 11 0 53.60% 0.09 486 1965/05/23 02:00:00 1965/05/24 10:00:00 33 0 53.70% 0.09 487 1965/06/25 06:00:00 1965/06/25 09:00:00 4 0 53.80% 0.09 488 1965/09/05 18:00:00 1965/09/05 18:00:00 1 0 53.90% 0.09 489 1965/12/21 23:00:00 1965/12/23 01:00:00 27 0 54.00% 0.09 490 1965/12/31 09:00:00 1966/01/01 10:00:00 26 0 54.10% 0.09 491 1966/01/19 16:00:00 1966/01/20 04:00:00 13 0 54.30% 0.09 492 1966/02/10 15:00:00 1966/02/10 18:00:00 4 0 54.40% 0.09 493 1966/02/25 03:00:00 1966/02/25 06:00:00 4 0 54.50% 0.09 494 1966/03/02 10:00:00 1966/03/02 13:00:00 4 0 54.60% 0.09 495 1966/03/13 15:00:00 1966/03/13 18:00:00 4 0 54.70% 0.09 496 1966/03/24 19:00:00 1966/03/24 22:00:00 4 0 54.80% 0.09 497 1966/05/10 05:00:00 1966/05/10 07:00:00 3 0 54.90% 0.09 498 1966/09/30 00:00:00 1966/09/30 13:00:00 14 0 55.00% 0.09 499 1966/10/18 12:00:00 1966/10/18 15:00:00 4 0 55.10% 0.09 500 1967/01/31 04:00:00 1967/01/31 08:00:00 5 0 55.20% 0.09 501 1967/03/11 09:00:00 1967/03/11 12:00:00 4 0 55.40% 0.09 502 1967/03/29 06:00:00 1967/03/29 09:00:00 4 0 55.50% 0.09 503 1967/04/24 11:00:00 1967/04/24 13:00:00 3 0 55.60% 0.09 504 1967/04/28 19:00:00 1967/04/28 21:00:00 3 0 55.70% 0.09 505 1967/06/09 07:00:00 1967/06/09 09:00:00 3 0 55.80% 0.09 506 1967/06/13 12:00:00 1967/06/13 18:00:00 7 0 55.90% 0.09 507 1967/07/26 21:00:00 1967/07/26 23:00:00 3 0 56.00% 0.09 508 1967/09/02 21:00:00 1967/09/02 23:00:00 3 0 56.10% 0.09 509 1967/09/29 21:00:00 1967/09/30 03:00:00 7 0 56.20% 0.09 11/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 510 1967/11/28 10:00:00 1967/11/28 13:00:00 4 0 56.40% 0.09 511 1967/12/08 01:00:00 1967/12/08 05:00:00 5 0 56.50% 0.09 512 1968/01/10 05:00:00 1968/01/10 09:00:00 5 0 56.60% 0.09 513 1968/02/10 04:00:00 1968/02/10 07:00:00 4 0 56.70% 0.09 514 1968/03/13 22:00:00 1968/03/14 01:00:00 4 0 56.80% 0.09 515 1968/03/17 02:00:00 1968/03/17 05:00:00 4 0 56.90% 0.09 516 1968/05/12 05:00:00 1968/05/12 10:00:00 6 0 57.00% 0.09 517 1968/06/07 07:00:00 1968/06/07 09:00:00 3 0 57.10% 0.09 518 1968/09/13 11:00:00 1968/09/13 13:00:00 3 0 57.20% 0.09 519 1968/10/30 10:00:00 1968/10/30 13:00:00 4 0 57.30% 0.09 520 1968/12/01 11:00:00 1968/12/01 15:00:00 5 0 57.50% 0.09 521 1969/01/17 11:00:00 1969/01/17 15:00:00 5 0 57.60% 0.09 522 1969/04/03 02:00:00 1969/04/03 04:00:00 3 0 57.70% 0.09 523 1969/06/11 09:00:00 1969/06/11 14:00:00 6 0 57.80% 0.09 524 1969/06/17 09:00:00 1969/06/17 11:00:00 3 0 57.90% 0.09 525 1969/08/10 05:00:00 1969/08/10 07:00:00 3 0 58.00% 0.09 526 1969/09/07 00:00:00 1969/09/07 02:00:00 3 0 58.10% 0.09 527 1969/11/15 21:00:00 1969/11/16 00:00:00 4 0 58.20% 0.09 528 1969/12/26 10:00:00 1969/12/26 14:00:00 5 0 58.30% 0.09 529 1970/01/10 01:00:00 1970/01/10 05:00:00 5 0 58.50% 0.09 530 1970/01/15 02:00:00 1970/01/15 06:00:00 5 0 58.60% 0.09 531 1970/01/18 14:00:00 1970/01/18 18:00:00 5 0 58.70% 0.09 532 1970/12/02 15:00:00 1970/12/02 19:00:00 5 0 58.80% 0.09 533 1971/02/19 17:00:00 1971/02/20 10:00:00 18 0 58.90% 0.08 534 1971/05/03 09:00:00 1971/05/03 11:00:00 3 0 59.00% 0.08 535 1971/05/06 06:00:00 1971/05/06 13:00:00 8 0 59.10% 0.08 536 1971/06/02 12:00:00 1971/06/02 14:00:00 3 0 59.20% 0.08 537 1971/06/05 14:00:00 1971/06/05 16:00:00 3 0 59.30% 0.08 538 1971/10/22 13:00:00 1971/10/22 16:00:00 4 0 59.40% 0.08 539 1971/10/24 11:00:00 1971/10/25 16:00:00 30 0 59.60% 0.08 540 1971/10/30 10:00:00 1971/10/30 13:00:00 4 0 59.70% 0.08 541 1971/11/13 13:00:00 1971/11/13 16:00:00 4 0 59.80% 0.08 542 1971/11/15 16:00:00 1971/11/15 19:00:00 4 0 59.90% 0.08 543 1971/11/29 06:00:00 1971/11/29 09:00:00 4 0 60.00% 0.08 544 1972/02/05 08:00:00 1972/02/06 11:00:00 28 0 60.10% 0.08 545 1972/04/13 03:00:00 1972/04/13 10:00:00 8 0 60.20% 0.08 546 1972/04/21 09:00:00 1972/04/21 11:00:00 3 0 60.30% 0.08 547 1972/06/07 04:00:00 1972/06/07 06:00:00 3 0 60.40% 0.08 548 1972/06/10 02:00:00 1972/06/10 04:00:00 3 0 60.60% 0.08 549 1972/06/22 13:00:00 1972/06/22 15:00:00 3 0 60.70% 0.08 550 1972/09/06 05:00:00 1972/09/06 23:00:00 19 0 60.80% 0.08 551 1972/10/11 15:00:00 1972/10/11 18:00:00 4 0 60.90% 0.08 552 1972/10/17 09:00:00 1972/10/17 12:00:00 4 0 61.00% 0.08 553 1972/11/08 01:00:00 1972/11/08 04:00:00 4 0 61.10% 0.08 554 1973/01/25 21:00:00 1973/01/26 01:00:00 5 0 61.20% 0.08 555 1973/01/30 13:00:00 1973/01/30 17:00:00 5 0 61.30% 0.08 556 1973/02/07 15:00:00 1973/02/07 18:00:00 4 0 61.40% 0.08 12/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 557 1973/02/21 09:00:00 1973/02/21 12:00:00 4 0 61.50% 0.08 558 1973/03/27 03:00:00 1973/03/27 18:00:00 16 0 61.70% 0.08 559 1973/03/28 21:00:00 1973/03/29 00:00:00 4 0 61.80% 0.08 560 1973/04/21 10:00:00 1973/04/21 12:00:00 3 0 61.90% 0.08 561 1973/05/23 15:00:00 1973/05/23 17:00:00 3 0 62.00% 0.08 562 1973/05/28 10:00:00 1973/05/28 12:00:00 3 0 62.10% 0.08 563 1973/05/31 09:00:00 1973/05/31 11:00:00 3 0 62.20% 0.08 564 1973/11/24 19:00:00 1973/11/24 22:00:00 4 0 62.30% 0.08 565 1973/12/16 15:00:00 1973/12/16 19:00:00 5 0 62.40% 0.08 566 1973/12/20 14:00:00 1973/12/20 18:00:00 5 0 62.50% 0.08 567 1973/12/22 03:00:00 1973/12/22 07:00:00 5 0 62.70% 0.08 568 1974/02/18 16:00:00 1974/02/19 22:00:00 31 0 62.80% 0.08 569 1974/06/08 12:00:00 1974/06/08 14:00:00 3 0 62.90% 0.08 570 1974/11/01 23:00:00 1974/11/02 02:00:00 4 0 63.00% 0.08 571 1974/11/03 16:00:00 1974/11/03 19:00:00 4 0 63.10% 0.08 572 1975/02/14 05:00:00 1975/02/14 08:00:00 4 0 63.20% 0.08 573 1975/03/23 14:00:00 1975/03/23 17:00:00 4 0 63.30% 0.08 574 1975/03/25 10:00:00 1975/03/26 01:00:00 16 0 63.40% 0.08 575 1975/03/31 21:00:00 1975/04/01 07:00:00 11 0 63.50% 0.08 576 1975/04/17 03:00:00 1975/04/17 10:00:00 8 0 63.60% 0.08 577 1975/04/18 13:00:00 1975/04/18 15:00:00 3 0 63.80% 0.08 578 1975/04/23 15:00:00 1975/04/23 17:00:00 3 0 63.90% 0.08 579 1975/05/20 02:00:00 1975/05/20 04:00:00 3 0 64.00% 0.08 580 1975/06/07 14:00:00 1975/06/07 16:00:00 3 0 64.10% 0.08 581 1975/10/28 22:00:00 1975/10/29 01:00:00 4 0 64.20% 0.08 582 1975/12/20 00:00:00 1975/12/20 04:00:00 5 0 64.30% 0.08 583 1976/04/04 09:00:00 1976/04/05 02:00:00 18 0 64.40% 0.08 584 1976/09/03 17:00:00 1976/09/03 19:00:00 3 0 64.50% 0.08 585 1976/09/14 11:00:00 1976/09/14 13:00:00 3 0 64.60% 0.08 586 1977/01/21 15:00:00 1977/01/21 19:00:00 5 0 64.80% 0.08 587 1977/02/23 12:00:00 1977/02/24 04:00:00 17 0 64.90% 0.08 588 1977/04/02 01:00:00 1977/04/02 03:00:00 3 0 65.00% 0.08 589 1977/05/05 21:00:00 1977/05/05 23:00:00 3 0 65.10% 0.08 590 1977/05/12 19:00:00 1977/05/13 02:00:00 8 0 65.20% 0.08 591 1977/05/24 06:00:00 1977/05/24 11:00:00 6 0 65.30% 0.08 592 1977/08/12 11:00:00 1977/08/12 13:00:00 3 0 65.40% 0.08 593 1977/10/06 03:00:00 1977/10/06 06:00:00 4 0 65.50% 0.08 594 1977/11/06 02:00:00 1977/11/06 05:00:00 4 0 65.60% 0.08 595 1978/01/12 16:00:00 1978/01/12 20:00:00 5 0 65.70% 0.08 596 1978/01/26 10:00:00 1978/01/26 14:00:00 5 0 65.90% 0.08 597 1978/04/02 17:00:00 1978/04/02 19:00:00 3 0 66.00% 0.08 598 1978/04/26 09:00:00 1978/04/26 11:00:00 3 0 66.10% 0.08 599 1978/05/01 11:00:00 1978/05/01 13:00:00 3 0 66.20% 0.08 600 1978/09/07 12:00:00 1978/09/07 14:00:00 3 0 66.30% 0.08 601 1978/09/19 13:00:00 1978/09/19 15:00:00 3 0 66.40% 0.08 602 1979/01/29 09:00:00 1979/01/29 13:00:00 5 0 66.50% 0.08 603 1979/03/13 10:00:00 1979/03/13 13:00:00 4 0 66.60% 0.08 13/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 604 1979/03/15 22:00:00 1979/03/16 01:00:00 4 0 66.70% 0.08 605 1979/05/19 15:00:00 1979/05/19 17:00:00 3 0 66.90% 0.07 606 1979/08/13 15:00:00 1979/08/13 17:00:00 3 0 67.00% 0.07 607 1979/11/04 07:00:00 1979/11/04 10:00:00 4 0 67.10% 0.07 608 1979/11/05 14:00:00 1979/11/05 17:00:00 4 0 67.20% 0.07 609 1979/12/22 10:00:00 1979/12/22 14:00:00 5 0 67.30% 0.07 610 1980/01/15 10:00:00 1980/01/15 14:00:00 5 0 67.40% 0.07 611 1980/03/18 08:00:00 1980/03/18 22:00:00 15 0 67.50% 0.07 612 1980/04/21 04:00:00 1980/04/21 06:00:00 3 0 67.60% 0.07 613 1980/04/24 12:00:00 1980/04/24 14:00:00 3 0 67.70% 0.07 614 1980/04/28 17:00:00 1980/04/29 22:00:00 30 0 67.80% 0.07 615 1980/05/01 23:00:00 1980/05/02 01:00:00 3 0 68.00% 0.07 616 1980/10/26 10:00:00 1980/10/26 13:00:00 4 0 68.10% 0.07 617 1980/12/11 14:00:00 1980/12/11 18:00:00 5 0 68.20% 0.07 618 1981/01/11 17:00:00 1981/01/11 21:00:00 5 0 68.30% 0.07 619 1981/03/14 02:00:00 1981/03/14 05:00:00 4 0 68.40% 0.07 620 1981/04/02 06:00:00 1981/04/02 23:00:00 18 0 68.50% 0.07 621 1981/04/18 13:00:00 1981/04/19 11:00:00 23 0 68.60% 0.07 622 1981/05/16 11:00:00 1981/05/16 13:00:00 3 0 68.70% 0.07 623 1981/05/27 01:00:00 1981/05/27 03:00:00 3 0 68.80% 0.07 624 1981/10/01 02:00:00 1981/10/01 05:00:00 4 0 69.00% 0.07 625 1981/10/28 23:00:00 1981/10/29 02:00:00 4 0 69.10% 0.07 626 1981/12/21 04:00:00 1981/12/21 08:00:00 5 0 69.20% 0.07 627 1982/02/05 14:00:00 1982/02/05 17:00:00 4 0 69.30% 0.07 628 1982/02/08 03:00:00 1982/02/08 06:00:00 4 0 69.40% 0.07 629 1982/02/16 09:00:00 1982/02/16 12:00:00 4 0 69.50% 0.07 630 1982/03/02 19:00:00 1982/03/03 03:00:00 9 0 69.60% 0.07 631 1982/03/12 14:00:00 1982/03/12 17:00:00 4 0 69.70% 0.07 632 1982/03/31 02:00:00 1982/03/31 12:00:00 11 0 69.80% 0.07 633 1982/04/05 15:00:00 1982/04/05 17:00:00 3 0 69.90% 0.07 634 1982/05/11 08:00:00 1982/05/11 10:00:00 3 0 70.10% 0.07 635 1982/05/26 13:00:00 1982/05/26 15:00:00 3 0 70.20% 0.07 636 1982/09/16 13:00:00 1982/09/16 15:00:00 3 0 70.30% 0.07 637 1982/09/22 13:00:00 1982/09/22 15:00:00 3 0 70.40% 0.07 638 1982/10/26 10:00:00 1982/10/26 13:00:00 4 0 70.50% 0.07 639 1982/10/31 15:00:00 1982/10/31 18:00:00 4 0 70.60% 0.07 640 1982/12/29 19:00:00 1982/12/30 14:00:00 20 0 70.70% 0.07 641 1983/03/15 10:00:00 1983/03/15 13:00:00 4 0 70.80% 0.07 642 1983/04/10 23:00:00 1983/04/13 02:00:00 52 0 70.90% 0.07 643 1983/08/07 09:00:00 1983/08/07 11:00:00 3 0 71.00% 0.07 644 1983/08/18 09:00:00 1983/08/18 18:00:00 10 0 71.20% 0.07 645 1983/11/18 02:00:00 1983/11/18 05:00:00 4 0 71.30% 0.07 646 1983/12/22 11:00:00 1983/12/22 14:00:00 4 0 71.40% 0.07 647 1984/01/16 16:00:00 1984/01/17 01:00:00 10 0 71.50% 0.07 648 1984/03/24 13:00:00 1984/03/24 16:00:00 4 0 71.60% 0.07 649 1984/10/17 08:00:00 1984/10/17 10:00:00 3 0 71.70% 0.07 650 1984/11/13 10:00:00 1984/11/13 13:00:00 4 0 71.80% 0.07 14/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 651 1984/11/22 16:00:00 1984/11/22 19:00:00 4 0 71.90% 0.07 652 1984/11/24 16:00:00 1984/11/24 19:00:00 4 0 72.00% 0.07 653 1984/12/12 23:00:00 1984/12/13 02:00:00 4 0 72.20% 0.07 654 1984/12/16 04:00:00 1984/12/16 08:00:00 5 0 72.30% 0.07 655 1984/12/18 14:00:00 1984/12/19 22:00:00 33 0 72.40% 0.07 656 1985/01/09 13:00:00 1985/01/09 17:00:00 5 0 72.50% 0.07 657 1985/03/12 11:00:00 1985/03/12 14:00:00 4 0 72.60% 0.07 658 1985/04/21 14:00:00 1985/04/22 04:00:00 15 0 72.70% 0.07 659 1985/05/30 15:00:00 1985/05/30 18:00:00 4 0 72.80% 0.07 660 1985/06/02 22:00:00 1985/06/03 03:00:00 6 0 72.90% 0.07 661 1985/07/18 16:00:00 1985/07/18 17:00:00 2 0 73.00% 0.07 662 1985/08/10 14:00:00 1985/08/10 16:00:00 3 0 73.10% 0.07 663 1985/09/04 11:00:00 1985/09/04 14:00:00 4 0 73.30% 0.07 664 1985/10/22 00:00:00 1985/10/22 03:00:00 4 0 73.40% 0.07 665 1985/11/27 09:00:00 1985/11/27 12:00:00 4 0 73.50% 0.07 666 1986/01/02 15:00:00 1986/01/02 20:00:00 6 0 73.60% 0.07 667 1986/02/13 09:00:00 1986/02/13 12:00:00 4 0 73.70% 0.07 668 1986/02/18 22:00:00 1986/02/19 17:00:00 20 0 73.80% 0.07 669 1986/05/22 10:00:00 1986/05/22 11:00:00 2 0 73.90% 0.07 670 1986/07/22 14:00:00 1986/07/22 17:00:00 4 0 74.00% 0.07 671 1986/08/18 06:00:00 1986/08/18 08:00:00 3 0 74.10% 0.07 672 1986/09/18 11:00:00 1986/09/18 13:00:00 3 0 74.30% 0.07 673 1986/12/20 06:00:00 1986/12/20 16:00:00 11 0 74.40% 0.07 674 1986/12/30 16:00:00 1986/12/30 19:00:00 4 0 74.50% 0.07 675 1987/02/01 01:00:00 1987/02/01 04:00:00 4 0 74.60% 0.07 676 1987/02/13 19:00:00 1987/02/14 04:00:00 10 0 74.70% 0.07 677 1987/02/15 15:00:00 1987/02/15 18:00:00 4 0 74.80% 0.07 678 1987/03/06 12:00:00 1987/03/06 14:00:00 3 0 74.90% 0.07 679 1987/03/15 01:00:00 1987/03/15 03:00:00 3 0 75.00% 0.07 680 1987/03/21 16:00:00 1987/03/21 23:00:00 8 0 75.10% 0.07 681 1987/03/23 21:00:00 1987/03/23 23:00:00 3 0 75.20% 0.07 682 1987/05/01 01:00:00 1987/05/01 02:00:00 2 0 75.40% 0.07 683 1987/05/20 08:00:00 1987/05/20 10:00:00 3 0 75.50% 0.07 684 1987/07/18 00:00:00 1987/07/18 02:00:00 3 0 75.60% 0.07 685 1987/08/14 09:00:00 1987/08/14 10:00:00 2 0 75.70% 0.07 686 1987/09/01 01:00:00 1987/09/01 03:00:00 3 0 75.80% 0.07 687 1987/09/13 05:00:00 1987/09/13 07:00:00 3 0 75.90% 0.07 688 1987/10/07 09:00:00 1987/10/07 11:00:00 3 0 76.00% 0.07 689 1987/10/24 08:00:00 1987/10/24 10:00:00 3 0 76.10% 0.07 690 1987/10/28 19:00:00 1987/10/29 02:00:00 8 0 76.20% 0.07 691 1987/11/14 02:00:00 1987/11/14 06:00:00 5 0 76.40% 0.07 692 1987/11/17 21:00:00 1987/11/18 03:00:00 7 0 76.50% 0.07 693 1987/11/20 16:00:00 1987/11/20 19:00:00 4 0 76.60% 0.07 694 1987/12/07 05:00:00 1987/12/07 08:00:00 4 0 76.70% 0.07 695 1987/12/19 14:00:00 1987/12/19 21:00:00 8 0 76.80% 0.07 696 1987/12/29 15:00:00 1987/12/30 08:00:00 18 0 76.90% 0.07 697 1988/04/16 05:00:00 1988/04/16 07:00:00 3 0 77.00% 0.07 15/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 698 1988/04/23 14:00:00 1988/04/23 16:00:00 3 0 77.10% 0.06 699 1988/05/05 22:00:00 1988/05/05 23:00:00 2 0 77.20% 0.06 700 1988/05/29 04:00:00 1988/05/29 09:00:00 6 0 77.30% 0.06 701 1988/05/31 16:00:00 1988/05/31 17:00:00 2 0 77.50% 0.06 702 1988/11/23 22:00:00 1988/11/24 04:00:00 7 0 77.60% 0.06 703 1988/12/15 07:00:00 1988/12/16 21:00:00 39 0 77.70% 0.06 704 1988/12/18 06:00:00 1988/12/19 07:00:00 26 0 77.80% 0.06 705 1988/12/23 00:00:00 1988/12/23 04:00:00 5 0 77.90% 0.06 706 1988/12/28 00:00:00 1988/12/28 03:00:00 4 0 78.00% 0.06 707 1989/01/04 08:00:00 1989/01/04 15:00:00 8 0 78.10% 0.06 708 1989/01/07 16:00:00 1989/01/07 20:00:00 5 0 78.20% 0.06 709 1989/01/28 14:00:00 1989/01/28 17:00:00 4 0 78.30% 0.06 710 1989/02/02 10:00:00 1989/02/02 16:00:00 7 0 78.50% 0.06 711 1989/02/04 04:00:00 1989/02/04 17:00:00 14 0 78.60% 0.06 712 1989/03/02 19:00:00 1989/03/03 03:00:00 9 0 78.70% 0.06 713 1989/03/08 20:00:00 1989/03/08 22:00:00 3 0 78.80% 0.06 714 1989/04/12 06:00:00 1989/04/12 08:00:00 3 0 78.90% 0.06 715 1989/04/26 03:00:00 1989/04/26 05:00:00 3 0 79.00% 0.06 716 1989/05/15 12:00:00 1989/05/15 13:00:00 2 0 79.10% 0.06 717 1989/09/17 04:00:00 1989/09/17 18:00:00 15 0 79.20% 0.06 718 1989/09/19 10:00:00 1989/09/19 13:00:00 4 0 79.30% 0.06 719 1989/10/25 20:00:00 1989/10/25 22:00:00 3 0 79.40% 0.06 720 1989/11/26 08:00:00 1989/11/26 21:00:00 14 0 79.60% 0.06 721 1990/03/05 16:00:00 1990/03/05 18:00:00 3 0 79.70% 0.06 722 1990/03/12 12:00:00 1990/03/12 22:00:00 11 0 79.80% 0.06 723 1990/03/28 18:00:00 1990/03/28 21:00:00 4 0 79.90% 0.06 724 1990/04/16 21:00:00 1990/04/17 14:00:00 18 0 80.00% 0.06 725 1990/04/18 19:00:00 1990/04/19 21:00:00 27 0 80.10% 0.06 726 1990/04/25 00:00:00 1990/04/25 02:00:00 3 0 80.20% 0.06 727 1990/07/13 12:00:00 1990/07/13 13:00:00 2 0 80.30% 0.06 728 1990/08/06 00:00:00 1990/08/06 02:00:00 3 0 80.40% 0.06 729 1990/08/09 16:00:00 1990/08/09 18:00:00 3 0 80.60% 0.06 730 1990/12/15 22:00:00 1990/12/16 01:00:00 4 0 80.70% 0.06 731 1990/12/19 13:00:00 1990/12/20 10:00:00 22 0 80.80% 0.06 732 1991/01/03 12:00:00 1991/01/04 16:00:00 29 0 80.90% 0.06 733 1991/03/11 02:00:00 1991/03/11 09:00:00 8 0 81.00% 0.06 734 1991/04/21 03:00:00 1991/04/21 05:00:00 3 0 81.10% 0.06 735 1991/07/31 11:00:00 1991/07/31 13:00:00 3 0 81.20% 0.06 736 1991/09/20 17:00:00 1991/09/20 20:00:00 4 0 81.30% 0.06 737 1991/11/29 19:00:00 1991/11/29 22:00:00 4 0 81.40% 0.06 738 1991/12/08 17:00:00 1991/12/08 20:00:00 4 0 81.50% 0.06 739 1991/12/09 23:00:00 1991/12/11 11:00:00 37 0 81.70% 0.06 740 1991/12/17 11:00:00 1991/12/19 11:00:00 49 0 81.80% 0.06 741 1992/03/06 18:00:00 1992/03/08 05:00:00 36 0 81.90% 0.06 742 1992/03/29 11:00:00 1992/03/29 13:00:00 3 0 82.00% 0.06 743 1992/03/31 16:00:00 1992/04/01 15:00:00 24 0 82.10% 0.06 744 1992/05/05 22:00:00 1992/05/05 23:00:00 2 0 82.20% 0.06 16/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 745 1992/05/22 17:00:00 1992/05/22 21:00:00 5 0 82.30% 0.06 746 1992/08/13 16:00:00 1992/08/13 18:00:00 3 0 82.40% 0.06 747 1992/10/21 16:00:00 1992/10/21 18:00:00 3 0 82.50% 0.06 748 1992/10/23 04:00:00 1992/10/23 09:00:00 6 0 82.70% 0.06 749 1992/10/28 23:00:00 1992/10/29 05:00:00 7 0 82.80% 0.06 750 1992/10/30 17:00:00 1992/10/30 22:00:00 6 0 82.90% 0.06 751 1992/11/20 16:00:00 1992/11/20 19:00:00 4 0 83.00% 0.06 752 1992/11/22 23:00:00 1992/11/23 02:00:00 4 0 83.10% 0.06 753 1992/12/03 23:00:00 1992/12/04 22:00:00 24 0 83.20% 0.06 754 1992/12/11 17:00:00 1992/12/12 00:00:00 8 0 83.30% 0.06 755 1993/01/02 02:00:00 1993/01/03 04:00:00 27 0 83.40% 0.06 756 1993/02/22 06:00:00 1993/02/22 09:00:00 4 0 83.50% 0.06 757 1993/02/26 15:00:00 1993/02/27 14:00:00 24 0 83.60% 0.06 758 1993/06/05 13:00:00 1993/06/05 19:00:00 7 0 83.80% 0.06 759 1993/10/16 06:00:00 1993/10/16 08:00:00 3 0 83.90% 0.06 760 1993/11/11 05:00:00 1993/11/12 20:00:00 40 0 84.00% 0.06 761 1993/11/30 04:00:00 1993/11/30 09:00:00 6 0 84.10% 0.06 762 1993/12/19 04:00:00 1993/12/19 11:00:00 8 0 84.20% 0.06 763 1994/02/11 07:00:00 1994/02/11 10:00:00 4 0 84.30% 0.06 764 1994/04/24 04:00:00 1994/04/24 07:00:00 4 0 84.40% 0.06 765 1994/05/08 09:00:00 1994/05/08 10:00:00 2 0 84.50% 0.06 766 1994/05/15 02:00:00 1994/05/15 03:00:00 2 0 84.60% 0.06 767 1994/11/16 08:00:00 1994/11/16 12:00:00 5 0 84.80% 0.06 768 1994/11/18 03:00:00 1994/11/18 08:00:00 6 0 84.90% 0.06 769 1994/11/26 11:00:00 1994/11/26 14:00:00 4 0 85.00% 0.06 770 1994/12/13 06:00:00 1994/12/13 09:00:00 4 0 85.10% 0.06 771 1994/12/17 15:00:00 1994/12/17 19:00:00 5 0 85.20% 0.06 772 1994/12/22 07:00:00 1994/12/23 00:00:00 18 0 85.30% 0.06 773 1995/01/15 03:00:00 1995/01/17 12:00:00 58 0 85.40% 0.06 774 1995/01/21 02:00:00 1995/01/21 09:00:00 8 0 85.50% 0.06 775 1995/01/27 12:00:00 1995/01/27 16:00:00 5 0 85.60% 0.06 776 1995/04/07 10:00:00 1995/04/07 13:00:00 4 0 85.70% 0.06 777 1995/05/06 02:00:00 1995/05/06 12:00:00 11 0 85.90% 0.06 778 1995/05/13 07:00:00 1995/05/13 13:00:00 7 0 86.00% 0.06 779 1995/05/14 21:00:00 1995/05/15 04:00:00 8 0 86.10% 0.06 780 1995/05/23 13:00:00 1995/05/23 14:00:00 2 0 86.20% 0.06 781 1995/07/16 08:00:00 1995/07/16 09:00:00 2 0 86.30% 0.06 782 1995/10/01 01:00:00 1995/10/01 03:00:00 3 0 86.40% 0.06 783 1995/11/01 03:00:00 1995/11/01 11:00:00 9 0 86.50% 0.06 784 1995/12/13 04:00:00 1995/12/14 11:00:00 32 0 86.60% 0.06 785 1996/01/16 19:00:00 1996/01/17 03:00:00 9 0 86.70% 0.06 786 1996/01/25 11:00:00 1996/01/25 22:00:00 12 0 86.90% 0.06 787 1996/01/28 08:00:00 1996/01/28 11:00:00 4 0 87.00% 0.06 788 1996/02/21 02:00:00 1996/02/22 04:00:00 27 0 87.10% 0.06 789 1996/05/24 15:00:00 1996/05/24 16:00:00 2 0 87.20% 0.06 790 1996/07/10 14:00:00 1996/07/10 15:00:00 2 0 87.30% 0.06 791 1996/07/19 10:00:00 1996/07/19 11:00:00 2 0 87.40% 0.06 17/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 792 1996/10/25 22:00:00 1996/10/26 00:00:00 3 0 87.50% 0.06 793 1996/11/29 02:00:00 1996/11/29 05:00:00 4 0 87.60% 0.06 794 1996/12/05 22:00:00 1996/12/06 14:00:00 17 0 87.70% 0.06 795 1996/12/22 15:00:00 1996/12/22 22:00:00 8 0 87.80% 0.06 796 1996/12/27 16:00:00 1996/12/28 11:00:00 20 0 88.00% 0.06 797 1997/01/02 01:00:00 1997/01/02 05:00:00 5 0 88.10% 0.06 798 1997/02/10 19:00:00 1997/02/11 04:00:00 10 0 88.20% 0.06 799 1997/02/17 18:00:00 1997/02/18 16:00:00 23 0 88.30% 0.06 800 1997/04/08 10:00:00 1997/04/08 12:00:00 3 0 88.40% 0.06 801 1997/05/24 07:00:00 1997/05/24 08:00:00 2 0 88.50% 0.06 802 1997/12/18 15:00:00 1997/12/18 21:00:00 7 0 88.60% 0.06 803 1997/12/21 08:00:00 1997/12/22 19:00:00 36 0 88.70% 0.06 804 1998/01/02 16:00:00 1998/01/05 00:00:00 57 0 88.80% 0.06 805 1998/01/13 11:00:00 1998/01/13 22:00:00 12 0 89.00% 0.06 806 1998/01/15 15:00:00 1998/01/16 20:00:00 30 0 89.10% 0.06 807 1998/01/19 04:00:00 1998/01/20 02:00:00 23 0 89.20% 0.06 808 1998/03/01 17:00:00 1998/03/01 18:00:00 2 0 89.30% 0.06 809 1998/03/06 04:00:00 1998/03/07 00:00:00 21 0 89.40% 0.06 810 1998/03/15 11:00:00 1998/03/15 21:00:00 11 0 89.50% 0.06 811 1998/04/06 17:00:00 1998/04/07 19:00:00 27 0 89.60% 0.06 812 1998/04/14 08:00:00 1998/04/16 00:00:00 41 0 89.70% 0.06 813 1998/04/19 15:00:00 1998/04/19 19:00:00 5 0 89.80% 0.06 814 1998/04/28 11:00:00 1998/04/28 20:00:00 10 0 89.90% 0.06 815 1998/05/04 16:00:00 1998/05/06 18:00:00 51 0 90.10% 0.06 816 1998/05/26 17:00:00 1998/05/26 17:00:00 1 0 90.20% 0.06 817 1998/06/12 17:00:00 1998/06/12 17:00:00 1 0 90.30% 0.06 818 2000/01/01 09:00:00 2000/01/02 20:00:00 36 0 90.40% 0.06 819 2000/01/17 17:00:00 2000/01/17 19:00:00 3 0 90.50% 0.06 820 2000/01/25 12:00:00 2000/01/25 22:00:00 11 0 90.60% 0.06 821 2000/02/11 09:00:00 2000/02/11 22:00:00 14 0 90.70% 0.06 822 2000/02/28 15:00:00 2000/02/28 19:00:00 5 0 90.80% 0.06 823 2000/04/14 22:00:00 2000/04/15 00:00:00 3 0 90.90% 0.06 824 2000/04/21 19:00:00 2000/04/22 07:00:00 13 0 91.00% 0.06 825 2000/05/25 23:00:00 2000/05/26 02:00:00 4 0 91.20% 0.06 826 2000/09/23 02:00:00 2000/09/23 04:00:00 3 0 91.30% 0.05 827 2000/10/06 13:00:00 2000/10/06 15:00:00 3 0 91.40% 0.05 828 2000/10/10 08:00:00 2000/10/11 11:00:00 28 0 91.50% 0.05 829 2000/10/21 18:00:00 2000/10/21 21:00:00 4 0 91.60% 0.05 830 2000/10/26 09:00:00 2000/10/27 04:00:00 20 0 91.70% 0.05 831 2000/11/10 04:00:00 2000/11/11 10:00:00 31 0 91.80% 0.05 832 2000/11/22 21:00:00 2000/11/23 00:00:00 4 0 91.90% 0.05 833 2001/01/08 16:00:00 2001/01/09 07:00:00 16 0 92.00% 0.05 834 2001/01/15 21:00:00 2001/01/16 00:00:00 4 0 92.20% 0.05 835 2001/08/20 15:00:00 2001/08/21 17:00:00 27 0 92.30% 0.05 836 2001/11/04 16:00:00 2001/11/04 19:00:00 4 0 92.40% 0.05 837 2001/11/12 17:00:00 2001/11/13 21:00:00 29 0 92.50% 0.05 838 2001/11/29 09:00:00 2001/11/29 23:00:00 15 0 92.60% 0.05 18/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 839 2001/12/03 05:00:00 2001/12/04 01:00:00 21 0 92.70% 0.05 840 2001/12/14 11:00:00 2001/12/15 19:00:00 33 0 92.80% 0.05 841 2001/12/30 16:00:00 2001/12/30 20:00:00 5 0 92.90% 0.05 842 2002/01/03 17:00:00 2002/01/03 19:00:00 3 0 93.00% 0.05 843 2002/01/28 03:00:00 2002/01/29 12:00:00 34 0 93.10% 0.05 844 2002/02/17 17:00:00 2002/02/18 19:00:00 27 0 93.30% 0.05 845 2002/03/16 06:00:00 2002/03/16 10:00:00 5 0 93.40% 0.05 846 2002/03/24 02:00:00 2002/03/24 06:00:00 5 0 93.50% 0.05 847 2002/04/15 09:00:00 2002/04/15 10:00:00 2 0 93.60% 0.05 848 2002/04/24 11:00:00 2002/04/24 16:00:00 6 0 93.70% 0.05 849 2002/04/26 09:00:00 2002/04/26 10:00:00 2 0 93.80% 0.05 850 2002/05/20 23:00:00 2002/05/21 00:00:00 2 0 93.90% 0.05 851 2002/09/06 16:00:00 2002/09/06 18:00:00 3 0 94.00% 0.05 852 2002/12/29 16:00:00 2002/12/29 20:00:00 5 0 94.10% 0.05 853 2003/03/04 16:00:00 2003/03/04 19:00:00 4 0 94.30% 0.05 854 2003/04/05 17:00:00 2003/04/05 17:00:00 1 0 94.40% 0.05 855 2003/04/17 11:00:00 2003/04/17 20:00:00 10 0 94.50% 0.05 856 2003/05/07 17:00:00 2003/05/07 17:00:00 1 0 94.60% 0.05 857 2003/06/10 17:00:00 2003/06/11 17:00:00 25 0 94.70% 0.05 858 2003/06/20 17:00:00 2003/06/20 17:00:00 1 0 94.80% 0.05 859 2003/07/30 07:00:00 2003/07/30 08:00:00 2 0 94.90% 0.05 860 2003/11/01 05:00:00 2003/11/01 08:00:00 4 0 95.00% 0.05 861 2003/11/03 18:00:00 2003/11/04 02:00:00 9 0 95.10% 0.05 862 2003/11/16 01:00:00 2003/11/16 06:00:00 6 0 95.20% 0.05 863 2003/12/07 21:00:00 2003/12/08 04:00:00 8 0 95.40% 0.05 864 2003/12/11 17:00:00 2003/12/11 20:00:00 4 0 95.50% 0.05 865 2004/01/02 19:00:00 2004/01/03 04:00:00 10 0 95.60% 0.05 866 2004/01/19 08:00:00 2004/01/19 13:00:00 6 0 95.70% 0.05 867 2004/01/25 03:00:00 2004/01/25 06:00:00 4 0 95.80% 0.05 868 2004/01/31 07:00:00 2004/01/31 10:00:00 4 0 95.90% 0.05 869 2004/03/26 10:00:00 2004/03/26 12:00:00 3 0 96.00% 0.05 870 2004/11/12 12:00:00 2004/11/12 15:00:00 4 0 96.10% 0.05 871 2004/12/08 07:00:00 2004/12/08 10:00:00 4 0 96.20% 0.05 872 2005/01/26 02:00:00 2005/01/27 03:00:00 26 0 96.40% 0.05 873 2005/02/07 08:00:00 2005/02/07 11:00:00 4 0 96.50% 0.05 874 2005/03/18 17:00:00 2005/03/20 07:00:00 39 0 96.60% 0.05 875 2005/03/24 15:00:00 2005/03/24 17:00:00 3 0 96.70% 0.05 876 2005/05/06 02:00:00 2005/05/06 03:00:00 2 0 96.80% 0.05 877 2005/07/23 05:00:00 2005/07/23 06:00:00 2 0 96.90% 0.05 878 2005/12/03 02:00:00 2005/12/03 05:00:00 4 0 97.00% 0.05 879 2006/02/17 23:00:00 2006/02/19 08:00:00 34 0 97.10% 0.05 880 2006/03/03 17:00:00 2006/03/03 19:00:00 3 0 97.20% 0.05 881 2006/03/07 01:00:00 2006/03/08 09:00:00 33 0 97.30% 0.05 882 2006/03/12 21:00:00 2006/03/13 01:00:00 5 0 97.50% 0.05 883 2006/03/26 00:00:00 2006/03/26 05:00:00 6 0 97.60% 0.05 884 2006/04/23 06:00:00 2006/04/23 08:00:00 3 0 97.70% 0.05 885 2006/07/29 00:00:00 2006/07/29 06:00:00 7 0 97.80% 0.05 19/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPre
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 886 2006/07/30 08:00:00 2006/07/31 08:00:00 25 0 97.90% 0.05 887 2006/11/27 10:00:00 2006/11/28 03:00:00 18 0 98.00% 0.05 888 2006/12/22 08:00:00 2006/12/22 11:00:00 4 0 98.10% 0.05 889 2006/12/27 07:00:00 2006/12/27 14:00:00 8 0 98.20% 0.05 890 2007/01/04 22:00:00 2007/01/05 05:00:00 8 0 98.30% 0.05 891 2007/02/11 12:00:00 2007/02/11 16:00:00 5 0 98.50% 0.05 892 2007/02/22 21:00:00 2007/02/23 08:00:00 12 0 98.60% 0.05 893 2007/02/27 00:00:00 2007/02/27 03:00:00 4 0 98.70% 0.05 894 2007/03/21 04:00:00 2007/03/21 12:00:00 9 0 98.80% 0.05 895 2007/03/27 05:00:00 2007/03/27 18:00:00 14 0 98.90% 0.05 896 2007/04/22 23:00:00 2007/04/23 04:00:00 6 0 99.00% 0.05 897 2007/05/23 01:00:00 2007/05/23 04:00:00 4 0 99.10% 0.05 898 2007/09/22 11:00:00 2007/09/22 13:00:00 3 0 99.20% 0.05 899 2007/10/13 03:00:00 2007/10/13 09:00:00 7 0 99.30% 0.05 900 2007/10/17 09:00:00 2007/10/17 11:00:00 3 0 99.40% 0.05 901 2007/12/19 00:00:00 2007/12/19 11:00:00 12 0 99.60% 0.05 902 2008/01/21 08:00:00 2008/01/21 13:00:00 6 0 99.70% 0.05 903 2008/02/20 09:00:00 2008/02/20 17:00:00 9 0 99.80% 0.05 904 2008/02/24 07:00:00 2008/02/24 14:00:00 8 0 99.90% 0.05 -------------End of Data-----------------
20/203/31/2023 10:58 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 1 1993/01/06 02:00:00 1993/01/11 07:00:00 126 2.6 0.10% 45 2 1995/01/03 07:00:00 1995/01/05 22:00:00 64 2.1 0.20% 22.5 3 1966/12/03 05:00:00 1966/12/07 18:00:00 110 2 0.40% 15 4 1978/03/11 17:00:00 1978/03/19 02:00:00 178 1.9 0.50% 11.25 5 1983/02/24 09:00:00 1983/03/04 17:00:00 201 1.9 0.60% 9 6 1980/01/27 20:00:00 1980/01/31 13:00:00 90 1.6 0.70% 7.5 7 1986/02/14 23:00:00 1986/02/16 12:00:00 38 1.6 0.80% 6.43 8 1978/01/14 14:00:00 1978/01/17 06:00:00 65 1.5 0.90% 5.63 9 1983/12/24 19:00:00 1983/12/27 23:00:00 77 1.5 1.10% 5 10 1998/02/14 02:00:00 1998/02/21 00:00:00 167 1.5 1.20% 4.5 11 1969/01/24 04:00:00 1969/01/29 09:00:00 126 1.4 1.30% 4.09 12 1971/02/23 04:00:00 1971/02/24 07:00:00 28 1.4 1.40% 3.75 13 1995/01/23 21:00:00 1995/01/27 17:00:00 93 1.4 1.50% 3.46 14 1967/11/19 03:00:00 1967/11/23 15:00:00 109 1.3 1.60% 3.21 15 1981/02/08 17:00:00 1981/02/10 16:00:00 48 1.3 1.80% 3 16 1988/04/19 23:00:00 1988/04/23 16:00:00 90 1.3 1.90% 2.81 17 1993/02/07 12:00:00 1993/02/10 04:00:00 65 1.3 2.00% 2.65 18 2007/08/26 07:00:00 2007/08/27 02:00:00 20 1.3 2.10% 2.5 19 1965/11/21 22:00:00 1965/11/26 02:00:00 101 1.2 2.20% 2.37 20 1967/04/11 08:00:00 1967/04/12 19:00:00 36 1.2 2.30% 2.25 21 1972/11/14 12:00:00 1972/11/17 23:00:00 84 1.2 2.50% 2.14 22 1979/01/05 07:00:00 1979/01/07 00:00:00 42 1.2 2.60% 2.05 23 1980/03/02 20:00:00 1980/03/04 04:00:00 33 1.2 2.70% 1.96 24 1983/11/24 23:00:00 1983/11/25 20:00:00 22 1.2 2.80% 1.88 25 1985/11/24 15:00:00 1985/11/26 07:00:00 41 1.2 2.90% 1.8 26 1993/01/12 14:00:00 1993/01/19 11:00:00 166 1.2 3.00% 1.73 27 1998/02/03 02:00:00 1998/02/09 20:00:00 163 1.2 3.20% 1.67 28 2007/11/30 07:00:00 2007/12/01 18:00:00 36 1.2 3.30% 1.61 29 1970/03/04 21:00:00 1970/03/05 18:00:00 22 1.1 3.40% 1.55 30 1974/12/04 03:00:00 1974/12/05 06:00:00 28 1.1 3.50% 1.5 31 1980/02/13 12:00:00 1980/02/21 22:00:00 203 1.1 3.60% 1.45 32 1998/01/09 02:00:00 1998/01/11 12:00:00 59 1.1 3.70% 1.41 33 2004/10/17 08:00:00 2004/10/21 11:00:00 100 1.1 3.90% 1.36 34 2004/10/27 02:00:00 2004/10/28 16:00:00 39 1.1 4.00% 1.32 35 2005/01/07 04:00:00 2005/01/12 10:00:00 127 1.1 4.10% 1.29 36 2007/01/29 22:00:00 2007/01/31 22:00:00 49 1.1 4.20% 1.25 37 1969/02/05 03:00:00 1969/02/07 11:00:00 57 1 4.30% 1.22 38 1978/12/16 22:00:00 1978/12/19 21:00:00 72 1 4.40% 1.18 39 1982/03/17 18:00:00 1982/03/20 14:00:00 69 1 4.60% 1.15 Peak Flow Statistics Table Values
SWMM.out file name: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Post-Development-1.out SWMM.out time stamp: 3/31/2023 10:57:26 AM
1/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 40 1991/03/19 00:00:00 1991/03/21 23:00:00 72 1 4.70% 1.13 41 1995/03/03 05:00:00 1995/03/06 21:00:00 89 1 4.80% 1.1 42 2003/02/25 02:00:00 2003/02/28 19:00:00 90 1 4.90% 1.07 43 2004/02/26 01:00:00 2004/02/28 01:00:00 49 1 5.00% 1.05 44 2006/04/04 18:00:00 2006/04/06 03:00:00 34 1 5.10% 1.02 45 1967/12/16 13:00:00 1967/12/20 15:00:00 99 0.9 5.30% 1 46 1970/02/28 13:00:00 1970/03/03 00:00:00 60 0.9 5.40% 0.98 47 1977/05/08 10:00:00 1977/05/10 07:00:00 46 0.9 5.50% 0.96 48 1980/01/07 14:00:00 1980/01/13 07:00:00 138 0.9 5.60% 0.94 49 1981/12/30 07:00:00 1982/01/02 20:00:00 86 0.9 5.70% 0.92 50 1982/12/22 18:00:00 1982/12/23 18:00:00 25 0.9 5.80% 0.9 51 1985/11/29 06:00:00 1985/11/30 12:00:00 31 0.9 6.00% 0.88 52 1991/02/27 13:00:00 1991/03/02 06:00:00 66 0.9 6.10% 0.87 53 1992/02/06 08:00:00 1992/02/07 18:00:00 35 0.9 6.20% 0.85 54 1994/02/17 11:00:00 1994/02/19 11:00:00 49 0.9 6.30% 0.83 55 1966/11/07 14:00:00 1966/11/08 13:00:00 24 0.8 6.40% 0.82 56 1967/01/22 16:00:00 1967/01/25 18:00:00 75 0.8 6.50% 0.8 57 1969/01/13 17:00:00 1969/01/15 06:00:00 38 0.8 6.70% 0.79 58 1973/01/16 15:00:00 1973/01/17 16:00:00 26 0.8 6.80% 0.78 59 1974/03/06 19:00:00 1974/03/09 07:00:00 61 0.8 6.90% 0.76 60 1976/02/03 17:00:00 1976/02/10 21:00:00 173 0.8 7.00% 0.75 61 1979/03/01 07:00:00 1979/03/02 13:00:00 31 0.8 7.10% 0.74 62 1981/02/28 15:00:00 1981/03/02 23:00:00 57 0.8 7.30% 0.73 63 1986/11/17 18:00:00 1986/11/18 20:00:00 27 0.8 7.40% 0.71 64 1991/03/25 06:00:00 1991/03/28 08:00:00 75 0.8 7.50% 0.7 65 1992/02/12 18:00:00 1992/02/14 00:00:00 31 0.8 7.60% 0.69 66 1996/11/21 16:00:00 1996/11/23 08:00:00 41 0.8 7.70% 0.68 67 2003/02/11 02:00:00 2003/02/15 07:00:00 102 0.8 7.80% 0.67 68 2005/01/03 04:00:00 2005/01/05 05:00:00 50 0.8 8.00% 0.66 69 1965/11/14 07:00:00 1965/11/18 18:00:00 108 0.7 8.10% 0.65 70 1965/12/09 04:00:00 1965/12/11 05:00:00 50 0.7 8.20% 0.64 71 1968/03/07 21:00:00 1968/03/09 06:00:00 34 0.7 8.30% 0.63 72 1970/12/16 22:00:00 1970/12/22 16:00:00 139 0.7 8.40% 0.63 73 1972/12/04 12:00:00 1972/12/05 12:00:00 25 0.7 8.50% 0.62 74 1976/03/01 08:00:00 1976/03/03 23:00:00 64 0.7 8.70% 0.61 75 1976/11/11 22:00:00 1976/11/13 04:00:00 31 0.7 8.80% 0.6 76 1988/01/17 03:00:00 1988/01/18 14:00:00 36 0.7 8.90% 0.59 77 1988/12/24 20:00:00 1988/12/26 09:00:00 38 0.7 9.00% 0.58 78 1995/02/13 10:00:00 1995/02/15 17:00:00 56 0.7 9.10% 0.58 79 1995/03/11 02:00:00 1995/03/12 17:00:00 40 0.7 9.20% 0.57 80 1996/01/31 04:00:00 1996/02/02 01:00:00 46 0.7 9.40% 0.56 81 2005/02/18 04:00:00 2005/02/24 04:00:00 145 0.7 9.50% 0.56 82 1964/11/17 13:00:00 1964/11/18 16:00:00 28 0.6 9.60% 0.55 83 1965/04/07 04:00:00 1965/04/12 06:00:00 123 0.6 9.70% 0.54 84 1967/03/13 11:00:00 1967/03/14 15:00:00 29 0.6 9.80% 0.54 85 1969/02/22 02:00:00 1969/02/26 19:00:00 114 0.6 9.90% 0.53 86 1970/11/28 20:00:00 1970/11/30 19:00:00 48 0.6 10.10% 0.52 2/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 87 1973/11/22 19:00:00 1973/11/25 01:00:00 55 0.6 10.20% 0.52 88 1974/01/04 17:00:00 1974/01/09 22:00:00 126 0.6 10.30% 0.51 89 1975/04/05 21:00:00 1975/04/10 00:00:00 100 0.6 10.40% 0.51 90 1979/03/27 03:00:00 1979/03/29 15:00:00 61 0.6 10.50% 0.5 91 1980/03/10 14:00:00 1980/03/11 13:00:00 24 0.6 10.60% 0.5 92 1982/11/29 15:00:00 1982/12/01 12:00:00 46 0.6 10.80% 0.49 93 1983/01/27 07:00:00 1983/01/29 21:00:00 63 0.6 10.90% 0.48 94 1985/11/11 03:00:00 1985/11/12 20:00:00 42 0.6 11.00% 0.48 95 1986/02/07 19:00:00 1986/02/09 09:00:00 39 0.6 11.10% 0.47 96 1986/09/23 20:00:00 1986/09/26 09:00:00 62 0.6 11.20% 0.47 97 1987/01/04 13:00:00 1987/01/08 02:00:00 86 0.6 11.30% 0.46 98 1987/12/16 12:00:00 1987/12/17 23:00:00 36 0.6 11.50% 0.46 99 1994/02/07 02:00:00 1994/02/08 21:00:00 44 0.6 11.60% 0.46 100 1997/01/12 13:00:00 1997/01/14 11:00:00 47 0.6 11.70% 0.45 101 2001/01/10 20:00:00 2001/01/13 02:00:00 55 0.6 11.80% 0.45 102 2003/04/13 15:00:00 2003/04/16 06:00:00 64 0.6 11.90% 0.44 103 2008/01/05 01:00:00 2008/01/07 23:00:00 71 0.6 12.00% 0.44 104 2008/02/03 06:00:00 2008/02/04 15:00:00 34 0.6 12.20% 0.43 105 1970/03/06 19:00:00 1970/03/09 12:00:00 66 0.5 12.30% 0.43 106 1971/12/22 05:00:00 1971/12/29 06:00:00 170 0.5 12.40% 0.43 107 1973/03/04 00:00:00 1973/03/09 13:00:00 134 0.5 12.50% 0.42 108 1975/03/08 08:00:00 1975/03/12 04:00:00 93 0.5 12.60% 0.42 109 1976/04/11 19:00:00 1976/04/16 09:00:00 111 0.5 12.70% 0.41 110 1976/09/09 19:00:00 1976/09/11 14:00:00 44 0.5 12.90% 0.41 111 1976/12/30 13:00:00 1977/01/01 05:00:00 41 0.5 13.00% 0.41 112 1977/08/16 14:00:00 1977/08/18 08:00:00 43 0.5 13.10% 0.4 113 1978/02/05 00:00:00 1978/02/07 14:00:00 63 0.5 13.20% 0.4 114 1979/10/19 22:00:00 1979/10/21 17:00:00 44 0.5 13.30% 0.4 115 1982/02/09 16:00:00 1982/02/11 14:00:00 47 0.5 13.50% 0.39 116 1986/03/08 15:00:00 1986/03/14 15:00:00 145 0.5 13.60% 0.39 117 1988/11/25 05:00:00 1988/11/26 15:00:00 35 0.5 13.70% 0.39 118 1989/03/25 09:00:00 1989/03/26 18:00:00 34 0.5 13.80% 0.38 119 1990/01/13 03:00:00 1990/01/17 22:00:00 116 0.5 13.90% 0.38 120 1992/01/02 23:00:00 1992/01/08 15:00:00 137 0.5 14.00% 0.38 121 1992/02/15 05:00:00 1992/02/16 13:00:00 33 0.5 14.20% 0.37 122 1992/12/07 08:00:00 1992/12/08 13:00:00 30 0.5 14.30% 0.37 123 2004/02/21 15:00:00 2004/02/24 00:00:00 58 0.5 14.40% 0.37 124 2004/12/28 06:00:00 2005/01/01 07:00:00 98 0.5 14.50% 0.36 125 2006/02/27 19:00:00 2006/03/01 04:00:00 34 0.5 14.60% 0.36 126 2008/02/22 02:00:00 2008/02/23 05:00:00 28 0.5 14.70% 0.36 127 1964/12/27 07:00:00 1964/12/29 10:00:00 52 0.4 14.90% 0.35 128 1965/12/29 08:00:00 1966/01/01 10:00:00 75 0.4 15.00% 0.35 129 1979/01/15 14:00:00 1979/01/19 07:00:00 90 0.4 15.10% 0.35 130 1979/02/21 01:00:00 1979/02/23 16:00:00 64 0.4 15.20% 0.35 131 1980/03/06 00:00:00 1980/03/07 06:00:00 31 0.4 15.30% 0.34 132 1981/03/19 20:00:00 1981/03/20 21:00:00 26 0.4 15.40% 0.34 133 1982/03/15 12:00:00 1982/03/16 17:00:00 30 0.4 15.60% 0.34 3/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 134 1983/03/20 20:00:00 1983/03/24 23:00:00 100 0.4 15.70% 0.34 135 1991/12/28 00:00:00 1991/12/30 14:00:00 63 0.4 15.80% 0.33 136 1993/02/18 13:00:00 1993/02/21 00:00:00 60 0.4 15.90% 0.33 137 1995/01/07 16:00:00 1995/01/09 00:00:00 33 0.4 16.00% 0.33 138 1995/01/10 16:00:00 1995/01/13 08:00:00 65 0.4 16.10% 0.33 139 1997/01/25 15:00:00 1997/01/27 15:00:00 49 0.4 16.30% 0.32 140 1998/02/22 02:00:00 1998/02/25 18:00:00 89 0.4 16.40% 0.32 141 2003/03/15 02:00:00 2003/03/17 18:00:00 65 0.4 16.50% 0.32 142 1965/12/12 06:00:00 1965/12/17 01:00:00 116 0.3 16.60% 0.32 143 1966/02/06 10:00:00 1966/02/08 11:00:00 50 0.3 16.70% 0.32 144 1968/04/01 19:00:00 1968/04/02 22:00:00 28 0.3 16.80% 0.31 145 1969/01/18 22:00:00 1969/01/22 11:00:00 86 0.3 17.00% 0.31 146 1972/11/11 01:00:00 1972/11/12 02:00:00 26 0.3 17.10% 0.31 147 1973/01/18 20:00:00 1973/01/19 19:00:00 24 0.3 17.20% 0.31 148 1973/02/10 22:00:00 1973/02/13 16:00:00 67 0.3 17.30% 0.3 149 1973/03/11 11:00:00 1973/03/14 07:00:00 69 0.3 17.40% 0.3 150 1973/03/20 08:00:00 1973/03/22 19:00:00 60 0.3 17.50% 0.3 151 1974/04/02 01:00:00 1974/04/03 02:00:00 26 0.3 17.70% 0.3 152 1974/10/28 05:00:00 1974/10/30 05:00:00 49 0.3 17.80% 0.3 153 1975/12/11 23:00:00 1975/12/13 04:00:00 30 0.3 17.90% 0.29 154 1978/09/05 17:00:00 1978/09/07 18:00:00 50 0.3 18.00% 0.29 155 1979/03/17 05:00:00 1979/03/21 12:00:00 104 0.3 18.10% 0.29 156 1982/01/20 03:00:00 1982/01/22 06:00:00 52 0.3 18.20% 0.29 157 1983/02/05 17:00:00 1983/02/09 02:00:00 82 0.3 18.40% 0.29 158 1983/03/17 04:00:00 1983/03/19 14:00:00 59 0.3 18.50% 0.29 159 1986/12/06 03:00:00 1986/12/07 20:00:00 42 0.3 18.60% 0.28 160 1987/11/04 15:00:00 1987/11/06 01:00:00 35 0.3 18.70% 0.28 161 1988/02/01 01:00:00 1988/02/03 11:00:00 59 0.3 18.80% 0.28 162 1992/03/02 01:00:00 1992/03/04 00:00:00 48 0.3 18.90% 0.28 163 1992/12/27 16:00:00 1992/12/30 13:00:00 70 0.3 19.10% 0.28 164 1993/11/14 06:00:00 1993/11/15 10:00:00 29 0.3 19.20% 0.27 165 1994/03/19 02:00:00 1994/03/20 21:00:00 44 0.3 19.30% 0.27 166 1994/03/24 21:00:00 1994/03/26 08:00:00 36 0.3 19.40% 0.27 167 1995/03/23 09:00:00 1995/03/24 07:00:00 23 0.3 19.50% 0.27 168 1996/12/09 15:00:00 1996/12/12 11:00:00 69 0.3 19.60% 0.27 169 2002/11/08 02:00:00 2002/11/10 19:00:00 66 0.3 19.80% 0.27 170 2005/02/11 01:00:00 2005/02/13 10:00:00 58 0.3 19.90% 0.27 171 2005/12/31 16:00:00 2006/01/03 11:00:00 68 0.3 20.00% 0.26 172 1965/02/06 00:00:00 1965/02/07 14:00:00 39 0.2 20.10% 0.26 173 1965/03/31 14:00:00 1965/04/05 15:00:00 122 0.2 20.20% 0.26 174 1967/04/21 12:00:00 1967/04/22 20:00:00 33 0.2 20.40% 0.26 175 1969/02/18 09:00:00 1969/02/20 10:00:00 50 0.2 20.50% 0.26 176 1969/03/12 21:00:00 1969/03/14 09:00:00 37 0.2 20.60% 0.26 177 1969/11/06 18:00:00 1969/11/07 18:00:00 25 0.2 20.70% 0.25 178 1970/03/11 10:00:00 1970/03/12 16:00:00 31 0.2 20.80% 0.25 179 1970/10/03 14:00:00 1970/10/04 08:00:00 19 0.2 20.90% 0.25 180 1971/01/02 04:00:00 1971/01/03 04:00:00 25 0.2 21.10% 0.25 4/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 181 1971/05/06 06:00:00 1971/05/08 16:00:00 59 0.2 21.20% 0.25 182 1971/05/28 01:00:00 1971/05/29 11:00:00 35 0.2 21.30% 0.25 183 1973/02/27 23:00:00 1973/02/28 23:00:00 25 0.2 21.40% 0.25 184 1974/01/01 04:00:00 1974/01/02 07:00:00 28 0.2 21.50% 0.25 185 1975/02/09 06:00:00 1975/02/10 19:00:00 38 0.2 21.60% 0.24 186 1975/11/27 17:00:00 1975/11/29 11:00:00 43 0.2 21.80% 0.24 187 1976/10/22 20:00:00 1976/10/23 20:00:00 25 0.2 21.90% 0.24 188 1977/01/03 12:00:00 1977/01/04 16:00:00 29 0.2 22.00% 0.24 189 1977/03/16 12:00:00 1977/03/17 16:00:00 29 0.2 22.10% 0.24 190 1977/03/24 11:00:00 1977/03/26 02:00:00 40 0.2 22.20% 0.24 191 1977/12/25 11:00:00 1977/12/29 23:00:00 109 0.2 22.30% 0.24 192 1978/01/30 07:00:00 1978/01/31 11:00:00 29 0.2 22.50% 0.23 193 1978/03/30 14:00:00 1978/04/01 05:00:00 40 0.2 22.60% 0.23 194 1978/04/07 01:00:00 1978/04/08 16:00:00 40 0.2 22.70% 0.23 195 1978/11/10 18:00:00 1978/11/12 18:00:00 49 0.2 22.80% 0.23 196 1978/11/13 21:00:00 1978/11/14 20:00:00 24 0.2 22.90% 0.23 197 1978/11/21 18:00:00 1978/11/24 04:00:00 59 0.2 23.00% 0.23 198 1979/01/31 00:00:00 1979/02/03 03:00:00 76 0.2 23.20% 0.23 199 1980/01/18 04:00:00 1980/01/19 16:00:00 37 0.2 23.30% 0.23 200 1980/03/25 22:00:00 1980/03/26 18:00:00 21 0.2 23.40% 0.23 201 1980/12/04 13:00:00 1980/12/05 13:00:00 25 0.2 23.50% 0.22 202 1981/02/25 05:00:00 1981/02/26 17:00:00 37 0.2 23.60% 0.22 203 1981/03/04 07:00:00 1981/03/06 06:00:00 48 0.2 23.70% 0.22 204 1981/11/26 18:00:00 1981/11/29 21:00:00 76 0.2 23.90% 0.22 205 1982/01/28 17:00:00 1982/01/29 13:00:00 21 0.2 24.00% 0.22 206 1982/03/26 21:00:00 1982/03/29 05:00:00 57 0.2 24.10% 0.22 207 1982/03/31 02:00:00 1982/04/03 15:00:00 86 0.2 24.20% 0.22 208 1982/11/09 13:00:00 1982/11/11 17:00:00 53 0.2 24.30% 0.22 209 1983/04/29 02:00:00 1983/05/01 22:00:00 69 0.2 24.40% 0.22 210 1983/11/20 09:00:00 1983/11/21 21:00:00 37 0.2 24.60% 0.21 211 1983/12/03 15:00:00 1983/12/04 12:00:00 22 0.2 24.70% 0.21 212 1985/02/01 15:00:00 1985/02/03 22:00:00 56 0.2 24.80% 0.21 213 1985/09/18 08:00:00 1985/09/19 03:00:00 20 0.2 24.90% 0.21 214 1985/12/02 12:00:00 1985/12/03 21:00:00 34 0.2 25.00% 0.21 215 1986/01/30 01:00:00 1986/02/01 09:00:00 57 0.2 25.10% 0.21 216 1986/03/15 20:00:00 1986/03/17 16:00:00 45 0.2 25.30% 0.21 217 1986/04/06 05:00:00 1986/04/07 07:00:00 27 0.2 25.40% 0.21 218 1987/10/22 16:00:00 1987/10/24 10:00:00 43 0.2 25.50% 0.21 219 1987/12/04 21:00:00 1987/12/05 16:00:00 20 0.2 25.60% 0.21 220 1988/04/14 18:00:00 1988/04/16 07:00:00 38 0.2 25.70% 0.21 221 1988/12/21 01:00:00 1988/12/23 07:00:00 55 0.2 25.80% 0.2 222 1990/02/17 10:00:00 1990/02/19 10:00:00 49 0.2 26.00% 0.2 223 1990/06/09 07:00:00 1990/06/10 22:00:00 40 0.2 26.10% 0.2 224 1991/01/09 09:00:00 1991/01/10 06:00:00 22 0.2 26.20% 0.2 225 1991/10/26 20:00:00 1991/10/27 16:00:00 21 0.2 26.30% 0.2 226 1993/01/31 01:00:00 1993/01/31 20:00:00 20 0.2 26.40% 0.2 227 1993/02/23 19:00:00 1993/02/24 21:00:00 27 0.2 26.50% 0.2 5/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 228 1993/03/26 00:00:00 1993/03/28 19:00:00 68 0.2 26.70% 0.2 229 1994/02/03 20:00:00 1994/02/05 09:00:00 38 0.2 26.80% 0.2 230 1994/02/20 12:00:00 1994/02/21 10:00:00 23 0.2 26.90% 0.2 231 1994/04/25 15:00:00 1994/04/28 17:00:00 75 0.2 27.00% 0.2 232 1995/03/21 09:00:00 1995/03/22 07:00:00 23 0.2 27.10% 0.19 233 1995/04/16 06:00:00 1995/04/19 14:00:00 81 0.2 27.30% 0.19 234 1995/12/20 17:00:00 1995/12/21 11:00:00 19 0.2 27.40% 0.19 235 1996/01/21 18:00:00 1996/01/22 23:00:00 30 0.2 27.50% 0.19 236 1996/02/25 09:00:00 1996/02/26 19:00:00 35 0.2 27.60% 0.19 237 1996/03/12 17:00:00 1996/03/14 10:00:00 42 0.2 27.70% 0.19 238 1997/04/03 17:00:00 1997/04/05 00:00:00 32 0.2 27.80% 0.19 239 1998/03/25 02:00:00 1998/04/02 17:00:00 208 0.2 28.00% 0.19 240 1998/04/11 02:00:00 1998/04/12 21:00:00 44 0.2 28.10% 0.19 241 1998/05/12 02:00:00 1998/05/13 19:00:00 42 0.2 28.20% 0.19 242 2000/02/21 02:00:00 2000/02/23 05:00:00 52 0.2 28.30% 0.19 243 2000/04/17 16:00:00 2000/04/18 19:00:00 28 0.2 28.40% 0.19 244 2001/01/26 11:00:00 2001/01/28 10:00:00 48 0.2 28.50% 0.18 245 2001/11/24 02:00:00 2001/11/25 15:00:00 38 0.2 28.70% 0.18 246 2002/03/17 20:00:00 2002/03/18 16:00:00 21 0.2 28.80% 0.18 247 2002/11/29 02:00:00 2002/11/30 18:00:00 41 0.2 28.90% 0.18 248 2002/12/16 02:00:00 2002/12/17 20:00:00 43 0.2 29.00% 0.18 249 2002/12/20 02:00:00 2002/12/22 02:00:00 49 0.2 29.10% 0.18 250 2003/12/24 23:00:00 2003/12/26 13:00:00 39 0.2 29.20% 0.18 251 2004/02/02 23:00:00 2004/02/04 10:00:00 36 0.2 29.40% 0.18 252 2004/02/18 16:00:00 2004/02/19 08:00:00 17 0.2 29.50% 0.18 253 2004/03/02 00:00:00 2004/03/03 11:00:00 36 0.2 29.60% 0.18 254 2005/04/28 07:00:00 2005/04/29 07:00:00 25 0.2 29.70% 0.18 255 2006/03/10 13:00:00 2006/03/13 06:00:00 66 0.2 29.80% 0.18 256 2006/03/28 02:00:00 2006/03/29 19:00:00 42 0.2 29.90% 0.18 257 2006/05/22 04:00:00 2006/05/23 00:00:00 21 0.2 30.10% 0.18 258 2007/04/20 14:00:00 2007/04/21 08:00:00 19 0.2 30.20% 0.17 259 2007/12/07 04:00:00 2007/12/09 04:00:00 49 0.2 30.30% 0.17 260 2008/02/14 11:00:00 2008/02/15 09:00:00 23 0.2 30.40% 0.17 261 1964/09/24 14:00:00 1964/09/24 21:00:00 8 0.1 30.50% 0.17 262 1964/10/15 09:00:00 1964/10/16 03:00:00 19 0.1 30.60% 0.17 263 1964/11/09 12:00:00 1964/11/12 15:00:00 76 0.1 30.80% 0.17 264 1965/01/24 06:00:00 1965/01/24 22:00:00 17 0.1 30.90% 0.17 265 1965/03/11 07:00:00 1965/03/12 04:00:00 22 0.1 31.00% 0.17 266 1965/12/21 23:00:00 1965/12/23 04:00:00 30 0.1 31.10% 0.17 267 1966/10/04 00:00:00 1966/10/05 20:00:00 45 0.1 31.20% 0.17 268 1966/10/10 12:00:00 1966/10/11 02:00:00 15 0.1 31.30% 0.17 269 1967/03/04 00:00:00 1967/03/04 17:00:00 18 0.1 31.50% 0.17 270 1967/03/31 10:00:00 1967/04/02 13:00:00 52 0.1 31.60% 0.17 271 1967/04/04 16:00:00 1967/04/05 07:00:00 16 0.1 31.70% 0.17 272 1967/04/18 19:00:00 1967/04/20 05:00:00 35 0.1 31.80% 0.17 273 1967/06/13 12:00:00 1967/06/13 23:00:00 12 0.1 31.90% 0.17 274 1967/08/31 02:00:00 1967/08/31 19:00:00 18 0.1 32.00% 0.16 6/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 275 1967/11/30 16:00:00 1967/12/01 08:00:00 17 0.1 32.20% 0.16 276 1967/12/13 10:00:00 1967/12/13 22:00:00 13 0.1 32.30% 0.16 277 1968/01/27 07:00:00 1968/01/28 15:00:00 33 0.1 32.40% 0.16 278 1968/02/13 09:00:00 1968/02/14 13:00:00 29 0.1 32.50% 0.16 279 1968/03/18 13:00:00 1968/03/19 00:00:00 12 0.1 32.60% 0.16 280 1968/07/09 21:00:00 1968/07/10 04:00:00 8 0.1 32.70% 0.16 281 1968/11/15 06:00:00 1968/11/16 06:00:00 25 0.1 32.90% 0.16 282 1968/12/19 14:00:00 1968/12/21 00:00:00 35 0.1 33.00% 0.16 283 1968/12/25 18:00:00 1968/12/26 20:00:00 27 0.1 33.10% 0.16 284 1969/02/15 18:00:00 1969/02/16 06:00:00 13 0.1 33.20% 0.16 285 1969/02/28 22:00:00 1969/03/01 10:00:00 13 0.1 33.30% 0.16 286 1969/03/10 02:00:00 1969/03/11 15:00:00 38 0.1 33.50% 0.16 287 1969/03/21 13:00:00 1969/03/22 13:00:00 25 0.1 33.60% 0.16 288 1969/04/05 20:00:00 1969/04/06 07:00:00 12 0.1 33.70% 0.16 289 1969/11/10 00:00:00 1969/11/10 15:00:00 16 0.1 33.80% 0.16 290 1969/12/08 19:00:00 1969/12/09 08:00:00 14 0.1 33.90% 0.16 291 1970/01/11 14:00:00 1970/01/12 12:00:00 23 0.1 34.00% 0.16 292 1970/01/16 16:00:00 1970/01/17 08:00:00 17 0.1 34.20% 0.15 293 1970/02/10 01:00:00 1970/02/11 16:00:00 40 0.1 34.30% 0.15 294 1970/04/30 09:00:00 1970/04/30 16:00:00 8 0.1 34.40% 0.15 295 1970/11/25 23:00:00 1970/11/26 22:00:00 24 0.1 34.50% 0.15 296 1970/12/09 05:00:00 1970/12/09 19:00:00 15 0.1 34.60% 0.15 297 1971/01/12 19:00:00 1971/01/13 10:00:00 16 0.1 34.70% 0.15 298 1971/02/16 16:00:00 1971/02/17 20:00:00 29 0.1 34.90% 0.15 299 1971/02/19 17:00:00 1971/02/20 14:00:00 22 0.1 35.00% 0.15 300 1971/03/13 06:00:00 1971/03/14 00:00:00 19 0.1 35.10% 0.15 301 1971/04/14 11:00:00 1971/04/16 15:00:00 53 0.1 35.20% 0.15 302 1971/04/23 07:00:00 1971/04/23 18:00:00 12 0.1 35.30% 0.15 303 1971/10/16 04:00:00 1971/10/17 17:00:00 38 0.1 35.40% 0.15 304 1971/12/03 00:00:00 1971/12/04 12:00:00 37 0.1 35.60% 0.15 305 1971/12/07 01:00:00 1971/12/07 12:00:00 12 0.1 35.70% 0.15 306 1971/12/31 04:00:00 1971/12/31 16:00:00 13 0.1 35.80% 0.15 307 1972/01/09 09:00:00 1972/01/10 10:00:00 26 0.1 35.90% 0.15 308 1972/02/05 08:00:00 1972/02/06 15:00:00 32 0.1 36.00% 0.15 309 1972/04/30 04:00:00 1972/04/30 18:00:00 15 0.1 36.10% 0.15 310 1972/05/19 04:00:00 1972/05/21 00:00:00 45 0.1 36.30% 0.15 311 1972/10/19 03:00:00 1972/10/21 01:00:00 47 0.1 36.40% 0.15 312 1972/12/07 04:00:00 1972/12/09 13:00:00 58 0.1 36.50% 0.14 313 1973/01/04 01:00:00 1973/01/05 05:00:00 29 0.1 36.60% 0.14 314 1973/01/09 10:00:00 1973/01/10 11:00:00 26 0.1 36.70% 0.14 315 1973/02/03 13:00:00 1973/02/04 08:00:00 20 0.1 36.80% 0.14 316 1973/02/06 01:00:00 1973/02/06 13:00:00 13 0.1 37.00% 0.14 317 1973/03/27 03:00:00 1973/03/29 03:00:00 49 0.1 37.10% 0.14 318 1973/04/30 05:00:00 1973/04/30 19:00:00 15 0.1 37.20% 0.14 319 1973/11/17 06:00:00 1973/11/19 03:00:00 46 0.1 37.30% 0.14 320 1973/12/01 15:00:00 1973/12/02 02:00:00 12 0.1 37.40% 0.14 321 1974/01/20 17:00:00 1974/01/21 06:00:00 14 0.1 37.50% 0.14 7/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 322 1974/03/02 10:00:00 1974/03/03 23:00:00 38 0.1 37.70% 0.14 323 1974/03/27 09:00:00 1974/03/27 18:00:00 10 0.1 37.80% 0.14 324 1974/12/28 06:00:00 1974/12/29 21:00:00 40 0.1 37.90% 0.14 325 1975/01/30 18:00:00 1975/01/31 08:00:00 15 0.1 38.00% 0.14 326 1975/02/03 09:00:00 1975/02/05 15:00:00 55 0.1 38.10% 0.14 327 1975/03/05 14:00:00 1975/03/07 04:00:00 39 0.1 38.20% 0.14 328 1975/03/14 02:00:00 1975/03/14 20:00:00 19 0.1 38.40% 0.14 329 1975/03/22 08:00:00 1975/03/23 20:00:00 37 0.1 38.50% 0.14 330 1975/03/31 21:00:00 1975/04/01 14:00:00 18 0.1 38.60% 0.14 331 1975/04/17 03:00:00 1975/04/18 19:00:00 41 0.1 38.70% 0.14 332 1976/11/27 04:00:00 1976/11/27 21:00:00 18 0.1 38.80% 0.14 333 1977/01/06 19:00:00 1977/01/07 16:00:00 22 0.1 38.90% 0.14 334 1977/01/28 17:00:00 1977/01/29 05:00:00 13 0.1 39.10% 0.14 335 1977/02/22 01:00:00 1977/02/22 11:00:00 11 0.1 39.20% 0.13 336 1977/02/23 12:00:00 1977/02/24 08:00:00 21 0.1 39.30% 0.13 337 1977/05/12 19:00:00 1977/05/13 07:00:00 13 0.1 39.40% 0.13 338 1977/05/24 06:00:00 1977/05/24 16:00:00 11 0.1 39.50% 0.13 339 1977/12/18 01:00:00 1977/12/19 00:00:00 24 0.1 39.60% 0.13 340 1977/12/23 03:00:00 1977/12/23 15:00:00 13 0.1 39.80% 0.13 341 1978/01/10 17:00:00 1978/01/11 10:00:00 18 0.1 39.90% 0.13 342 1978/03/22 04:00:00 1978/03/23 20:00:00 41 0.1 40.00% 0.13 343 1978/04/15 20:00:00 1978/04/16 11:00:00 16 0.1 40.10% 0.13 344 1979/01/09 08:00:00 1979/01/10 00:00:00 17 0.1 40.20% 0.13 345 1979/02/14 03:00:00 1979/02/14 20:00:00 18 0.1 40.40% 0.13 346 1979/11/07 19:00:00 1979/11/09 10:00:00 40 0.1 40.50% 0.13 347 1980/03/21 19:00:00 1980/03/22 10:00:00 16 0.1 40.60% 0.13 348 1980/04/22 15:00:00 1980/04/24 18:00:00 52 0.1 40.70% 0.13 349 1980/04/28 17:00:00 1980/04/30 02:00:00 34 0.1 40.80% 0.13 350 1980/05/10 11:00:00 1980/05/10 21:00:00 11 0.1 40.90% 0.13 351 1980/12/07 11:00:00 1980/12/07 22:00:00 12 0.1 41.10% 0.13 352 1981/01/28 06:00:00 1981/01/31 03:00:00 70 0.1 41.20% 0.13 353 1981/03/26 22:00:00 1981/03/27 13:00:00 16 0.1 41.30% 0.13 354 1981/04/18 13:00:00 1981/04/19 15:00:00 27 0.1 41.40% 0.13 355 1981/10/11 06:00:00 1981/10/11 15:00:00 10 0.1 41.50% 0.13 356 1982/01/05 04:00:00 1982/01/06 00:00:00 21 0.1 41.60% 0.13 357 1982/01/10 18:00:00 1982/01/11 09:00:00 16 0.1 41.80% 0.13 358 1982/03/02 19:00:00 1982/03/03 08:00:00 14 0.1 41.90% 0.13 359 1982/09/26 01:00:00 1982/09/27 00:00:00 24 0.1 42.00% 0.13 360 1982/11/19 02:00:00 1982/11/20 02:00:00 25 0.1 42.10% 0.13 361 1982/12/07 23:00:00 1982/12/10 10:00:00 60 0.1 42.20% 0.13 362 1982/12/29 19:00:00 1982/12/30 17:00:00 23 0.1 42.30% 0.12 363 1983/01/19 04:00:00 1983/01/19 19:00:00 16 0.1 42.50% 0.12 364 1983/01/23 00:00:00 1983/01/23 13:00:00 14 0.1 42.60% 0.12 365 1983/01/24 18:00:00 1983/01/25 05:00:00 12 0.1 42.70% 0.12 366 1983/02/02 12:00:00 1983/02/03 08:00:00 21 0.1 42.80% 0.12 367 1983/03/06 03:00:00 1983/03/06 20:00:00 18 0.1 42.90% 0.12 368 1983/04/10 23:00:00 1983/04/13 06:00:00 56 0.1 43.00% 0.12 8/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 369 1983/04/17 22:00:00 1983/04/18 15:00:00 18 0.1 43.20% 0.12 370 1983/04/20 01:00:00 1983/04/21 19:00:00 43 0.1 43.30% 0.12 371 1983/08/16 15:00:00 1983/08/17 03:00:00 13 0.1 43.40% 0.12 372 1983/10/01 04:00:00 1983/10/02 05:00:00 26 0.1 43.50% 0.12 373 1983/10/07 07:00:00 1983/10/08 02:00:00 20 0.1 43.60% 0.12 374 1983/11/11 22:00:00 1983/11/13 14:00:00 41 0.1 43.70% 0.12 375 1983/12/09 18:00:00 1983/12/10 09:00:00 16 0.1 43.90% 0.12 376 1984/01/16 16:00:00 1984/01/17 05:00:00 14 0.1 44.00% 0.12 377 1984/04/06 06:00:00 1984/04/06 17:00:00 12 0.1 44.10% 0.12 378 1984/12/07 23:00:00 1984/12/08 14:00:00 16 0.1 44.20% 0.12 379 1984/12/14 14:00:00 1984/12/15 00:00:00 11 0.1 44.30% 0.12 380 1984/12/16 04:00:00 1984/12/16 11:00:00 8 0.1 44.40% 0.12 381 1985/02/09 05:00:00 1985/02/10 05:00:00 25 0.1 44.60% 0.12 382 1985/02/20 20:00:00 1985/02/21 07:00:00 12 0.1 44.70% 0.12 383 1985/03/02 13:00:00 1985/03/03 12:00:00 24 0.1 44.80% 0.12 384 1985/03/27 08:00:00 1985/03/28 18:00:00 35 0.1 44.90% 0.12 385 1985/10/07 14:00:00 1985/10/07 22:00:00 9 0.1 45.00% 0.12 386 1985/10/09 12:00:00 1985/10/10 02:00:00 15 0.1 45.10% 0.12 387 1985/12/09 16:00:00 1985/12/11 21:00:00 54 0.1 45.30% 0.12 388 1986/07/19 12:00:00 1986/07/20 02:00:00 15 0.1 45.40% 0.12 389 1986/10/08 16:00:00 1986/10/11 09:00:00 66 0.1 45.50% 0.12 390 1987/02/23 13:00:00 1987/02/26 13:00:00 73 0.1 45.60% 0.12 391 1987/04/03 04:00:00 1987/04/04 14:00:00 35 0.1 45.70% 0.12 392 1987/10/12 18:00:00 1987/10/13 05:00:00 12 0.1 45.80% 0.12 393 1987/10/28 19:00:00 1987/10/29 10:00:00 16 0.1 46.00% 0.12 394 1987/10/31 00:00:00 1987/11/02 14:00:00 63 0.1 46.10% 0.11 395 1987/12/19 14:00:00 1987/12/20 04:00:00 15 0.1 46.20% 0.11 396 1988/01/05 13:00:00 1988/01/06 09:00:00 21 0.1 46.30% 0.11 397 1988/02/29 22:00:00 1988/03/02 10:00:00 37 0.1 46.40% 0.11 398 1988/11/14 05:00:00 1988/11/14 23:00:00 19 0.1 46.50% 0.11 399 1988/12/15 07:00:00 1988/12/17 01:00:00 43 0.1 46.70% 0.11 400 1988/12/18 06:00:00 1988/12/19 08:00:00 27 0.1 46.80% 0.11 401 1989/01/04 08:00:00 1989/01/06 11:00:00 52 0.1 46.90% 0.11 402 1989/02/02 10:00:00 1989/02/02 20:00:00 11 0.1 47.00% 0.11 403 1989/02/04 04:00:00 1989/02/05 01:00:00 22 0.1 47.10% 0.11 404 1989/10/21 23:00:00 1989/10/22 15:00:00 17 0.1 47.30% 0.11 405 1990/01/02 01:00:00 1990/01/02 20:00:00 20 0.1 47.40% 0.11 406 1990/01/31 00:00:00 1990/01/31 17:00:00 18 0.1 47.50% 0.11 407 1990/02/04 11:00:00 1990/02/04 22:00:00 12 0.1 47.60% 0.11 408 1990/03/11 01:00:00 1990/03/13 00:00:00 48 0.1 47.70% 0.11 409 1990/04/04 09:00:00 1990/04/05 16:00:00 32 0.1 47.80% 0.11 410 1990/05/28 04:00:00 1990/05/29 07:00:00 28 0.1 48.00% 0.11 411 1990/11/19 22:00:00 1990/11/20 17:00:00 20 0.1 48.10% 0.11 412 1990/11/26 02:00:00 1990/11/26 15:00:00 14 0.1 48.20% 0.11 413 1990/12/19 13:00:00 1990/12/20 12:00:00 24 0.1 48.30% 0.11 414 1991/01/03 12:00:00 1991/01/04 22:00:00 35 0.1 48.40% 0.11 415 1991/03/13 17:00:00 1991/03/16 05:00:00 61 0.1 48.50% 0.11 9/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 416 1991/12/17 11:00:00 1991/12/19 14:00:00 52 0.1 48.70% 0.11 417 1992/02/09 23:00:00 1992/02/10 14:00:00 16 0.1 48.80% 0.11 418 1992/03/20 16:00:00 1992/03/23 19:00:00 76 0.1 48.90% 0.11 419 1992/03/26 16:00:00 1992/03/27 10:00:00 19 0.1 49.00% 0.11 420 1992/03/31 16:00:00 1992/04/01 15:00:00 24 0.1 49.10% 0.11 421 1992/10/30 17:00:00 1992/10/31 03:00:00 11 0.1 49.20% 0.11 422 1992/12/03 23:00:00 1992/12/05 02:00:00 28 0.1 49.40% 0.11 423 1992/12/17 22:00:00 1992/12/18 16:00:00 19 0.1 49.50% 0.11 424 1993/01/02 02:00:00 1993/01/03 06:00:00 29 0.1 49.60% 0.11 425 1993/06/05 13:00:00 1993/06/06 04:00:00 16 0.1 49.70% 0.11 426 1993/11/22 22:00:00 1993/11/23 16:00:00 19 0.1 49.80% 0.11 427 1993/11/30 04:00:00 1993/11/30 14:00:00 11 0.1 49.90% 0.11 428 1993/12/11 16:00:00 1993/12/12 12:00:00 21 0.1 50.10% 0.11 429 1993/12/14 17:00:00 1993/12/15 13:00:00 21 0.1 50.20% 0.11 430 1994/01/25 00:00:00 1994/01/27 22:00:00 71 0.1 50.30% 0.11 431 1994/03/06 05:00:00 1994/03/08 00:00:00 44 0.1 50.40% 0.1 432 1994/04/09 05:00:00 1994/04/10 02:00:00 22 0.1 50.50% 0.1 433 1994/11/10 11:00:00 1994/11/10 23:00:00 13 0.1 50.60% 0.1 434 1994/11/16 08:00:00 1994/11/16 17:00:00 10 0.1 50.80% 0.1 435 1994/12/24 05:00:00 1994/12/25 20:00:00 40 0.1 50.90% 0.1 436 1995/01/15 03:00:00 1995/01/17 15:00:00 61 0.1 51.00% 0.1 437 1995/01/21 02:00:00 1995/01/21 16:00:00 15 0.1 51.10% 0.1 438 1995/06/15 21:00:00 1995/06/17 17:00:00 45 0.1 51.20% 0.1 439 1995/12/23 10:00:00 1995/12/24 00:00:00 15 0.1 51.30% 0.1 440 1996/02/21 02:00:00 1996/02/22 09:00:00 32 0.1 51.50% 0.1 441 1996/02/27 21:00:00 1996/02/28 12:00:00 16 0.1 51.60% 0.1 442 1996/03/04 17:00:00 1996/03/05 13:00:00 21 0.1 51.70% 0.1 443 1996/04/18 00:00:00 1996/04/18 19:00:00 20 0.1 51.80% 0.1 444 1996/10/30 13:00:00 1996/10/31 10:00:00 22 0.1 51.90% 0.1 445 1996/12/05 22:00:00 1996/12/06 19:00:00 22 0.1 52.00% 0.1 446 1996/12/22 15:00:00 1996/12/23 02:00:00 12 0.1 52.20% 0.1 447 1997/01/05 09:00:00 1997/01/06 02:00:00 18 0.1 52.30% 0.1 448 1997/01/15 18:00:00 1997/01/16 08:00:00 15 0.1 52.40% 0.1 449 1997/01/23 03:00:00 1997/01/24 06:00:00 28 0.1 52.50% 0.1 450 1997/02/10 19:00:00 1997/02/11 08:00:00 14 0.1 52.60% 0.1 451 1997/02/27 11:00:00 1997/02/28 11:00:00 25 0.1 52.70% 0.1 452 1997/12/06 02:00:00 1997/12/08 06:00:00 53 0.1 52.90% 0.1 453 1998/01/19 04:00:00 1998/01/20 04:00:00 25 0.1 53.00% 0.1 454 1998/01/29 02:00:00 1998/01/30 09:00:00 32 0.1 53.10% 0.1 455 1998/03/06 04:00:00 1998/03/07 03:00:00 24 0.1 53.20% 0.1 456 1998/04/14 08:00:00 1998/04/16 02:00:00 43 0.1 53.30% 0.1 457 1998/05/04 16:00:00 1998/05/06 18:00:00 51 0.1 53.50% 0.1 458 2000/02/13 02:00:00 2000/02/14 19:00:00 42 0.1 53.60% 0.1 459 2000/02/17 02:00:00 2000/02/18 08:00:00 31 0.1 53.70% 0.1 460 2000/10/29 20:00:00 2000/10/30 17:00:00 22 0.1 53.80% 0.1 461 2000/11/10 04:00:00 2000/11/11 15:00:00 36 0.1 53.90% 0.1 462 2001/01/08 16:00:00 2001/01/09 08:00:00 17 0.1 54.00% 0.1 10/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 463 2001/04/21 00:00:00 2001/04/22 00:00:00 25 0.1 54.20% 0.1 464 2001/05/29 15:00:00 2001/05/29 22:00:00 8 0.1 54.30% 0.1 465 2001/12/03 05:00:00 2001/12/04 03:00:00 23 0.1 54.40% 0.1 466 2001/12/09 02:00:00 2001/12/10 08:00:00 31 0.1 54.50% 0.1 467 2001/12/21 02:00:00 2001/12/22 09:00:00 32 0.1 54.60% 0.1 468 2002/03/07 11:00:00 2002/03/08 05:00:00 19 0.1 54.70% 0.1 469 2003/05/03 02:00:00 2003/05/04 06:00:00 29 0.1 54.90% 0.1 470 2003/11/12 03:00:00 2003/11/13 00:00:00 22 0.1 55.00% 0.1 471 2004/01/28 05:00:00 2004/01/28 17:00:00 13 0.1 55.10% 0.1 472 2004/04/01 22:00:00 2004/04/02 22:00:00 25 0.1 55.20% 0.1 473 2004/04/17 13:00:00 2004/04/17 22:00:00 10 0.1 55.30% 0.1 474 2004/11/21 05:00:00 2004/11/21 23:00:00 19 0.1 55.40% 0.1 475 2004/11/29 12:00:00 2004/11/29 21:00:00 10 0.1 55.60% 0.1 476 2004/12/04 14:00:00 2004/12/06 08:00:00 43 0.1 55.70% 0.1 477 2005/01/28 15:00:00 2005/01/29 09:00:00 19 0.1 55.80% 0.09 478 2005/03/04 15:00:00 2005/03/05 18:00:00 28 0.1 55.90% 0.09 479 2005/03/22 19:00:00 2005/03/24 17:00:00 47 0.1 56.00% 0.09 480 2005/09/20 02:00:00 2005/09/20 07:00:00 6 0.1 56.10% 0.09 481 2005/10/16 16:00:00 2005/10/18 23:00:00 56 0.1 56.30% 0.09 482 2006/02/17 23:00:00 2006/02/19 14:00:00 40 0.1 56.40% 0.09 483 2006/03/17 20:00:00 2006/03/19 03:00:00 32 0.1 56.50% 0.09 484 2006/03/20 04:00:00 2006/03/21 16:00:00 37 0.1 56.60% 0.09 485 2006/04/14 13:00:00 2006/04/15 14:00:00 26 0.1 56.70% 0.09 486 2006/10/13 20:00:00 2006/10/14 22:00:00 27 0.1 56.80% 0.09 487 2006/12/09 22:00:00 2006/12/11 04:00:00 31 0.1 57.00% 0.09 488 2006/12/16 20:00:00 2006/12/17 12:00:00 17 0.1 57.10% 0.09 489 2007/02/12 22:00:00 2007/02/14 06:00:00 33 0.1 57.20% 0.09 490 2007/02/19 01:00:00 2007/02/20 07:00:00 31 0.1 57.30% 0.09 491 2007/02/22 21:00:00 2007/02/23 14:00:00 18 0.1 57.40% 0.09 492 2007/02/28 05:00:00 2007/02/28 14:00:00 10 0.1 57.50% 0.09 493 2007/04/22 23:00:00 2007/04/23 11:00:00 13 0.1 57.70% 0.09 494 2007/12/19 00:00:00 2007/12/19 17:00:00 18 0.1 57.80% 0.09 495 2007/12/20 22:00:00 2007/12/21 14:00:00 17 0.1 57.90% 0.09 496 2008/01/23 19:00:00 2008/01/24 15:00:00 21 0.1 58.00% 0.09 497 2008/01/26 21:00:00 2008/01/28 21:00:00 49 0.1 58.10% 0.09 498 2008/02/20 09:00:00 2008/02/20 23:00:00 15 0.1 58.20% 0.09 499 2008/02/24 07:00:00 2008/02/24 21:00:00 15 0.1 58.40% 0.09 500 1964/11/26 12:00:00 1964/11/26 19:00:00 8 0 58.50% 0.09 501 1965/01/07 10:00:00 1965/01/07 20:00:00 11 0 58.60% 0.09 502 1965/03/07 01:00:00 1965/03/07 11:00:00 11 0 58.70% 0.09 503 1965/03/13 06:00:00 1965/03/13 13:00:00 8 0 58.80% 0.09 504 1965/03/15 02:00:00 1965/03/15 13:00:00 12 0 58.90% 0.09 505 1965/03/24 09:00:00 1965/03/24 21:00:00 13 0 59.10% 0.09 506 1965/05/23 02:00:00 1965/05/24 10:00:00 33 0 59.20% 0.09 507 1965/06/25 06:00:00 1965/06/25 09:00:00 4 0 59.30% 0.09 508 1965/09/05 18:00:00 1965/09/05 18:00:00 1 0 59.40% 0.09 509 1966/01/19 16:00:00 1966/01/20 05:00:00 14 0 59.50% 0.09 11/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 510 1966/02/10 15:00:00 1966/02/10 21:00:00 7 0 59.60% 0.09 511 1966/02/25 03:00:00 1966/02/25 07:00:00 5 0 59.80% 0.09 512 1966/03/02 10:00:00 1966/03/02 15:00:00 6 0 59.90% 0.09 513 1966/03/13 15:00:00 1966/03/13 19:00:00 5 0 60.00% 0.09 514 1966/03/24 19:00:00 1966/03/24 23:00:00 5 0 60.10% 0.09 515 1966/05/10 05:00:00 1966/05/10 07:00:00 3 0 60.20% 0.09 516 1966/09/30 00:00:00 1966/09/30 15:00:00 16 0 60.40% 0.09 517 1966/10/18 12:00:00 1966/10/18 17:00:00 6 0 60.50% 0.09 518 1967/01/31 04:00:00 1967/01/31 10:00:00 7 0 60.60% 0.09 519 1967/03/11 09:00:00 1967/03/11 14:00:00 6 0 60.70% 0.09 520 1967/03/29 06:00:00 1967/03/29 09:00:00 4 0 60.80% 0.09 521 1967/04/24 11:00:00 1967/04/24 17:00:00 7 0 60.90% 0.09 522 1967/04/28 19:00:00 1967/04/29 00:00:00 6 0 61.10% 0.09 523 1967/06/09 07:00:00 1967/06/09 09:00:00 3 0 61.20% 0.09 524 1967/07/26 21:00:00 1967/07/26 23:00:00 3 0 61.30% 0.09 525 1967/09/02 21:00:00 1967/09/03 02:00:00 6 0 61.40% 0.09 526 1967/09/29 21:00:00 1967/09/30 07:00:00 11 0 61.50% 0.09 527 1967/11/28 10:00:00 1967/11/28 16:00:00 7 0 61.60% 0.09 528 1967/12/08 01:00:00 1967/12/08 07:00:00 7 0 61.80% 0.09 529 1968/01/10 05:00:00 1968/01/10 09:00:00 5 0 61.90% 0.09 530 1968/02/10 04:00:00 1968/02/10 09:00:00 6 0 62.00% 0.09 531 1968/03/13 22:00:00 1968/03/14 03:00:00 6 0 62.10% 0.09 532 1968/03/17 02:00:00 1968/03/17 08:00:00 7 0 62.20% 0.09 533 1968/05/12 05:00:00 1968/05/12 14:00:00 10 0 62.30% 0.08 534 1968/06/07 07:00:00 1968/06/07 09:00:00 3 0 62.50% 0.08 535 1968/09/13 11:00:00 1968/09/13 13:00:00 3 0 62.60% 0.08 536 1968/10/30 10:00:00 1968/10/30 13:00:00 4 0 62.70% 0.08 537 1968/12/01 11:00:00 1968/12/01 15:00:00 5 0 62.80% 0.08 538 1969/01/17 11:00:00 1969/01/17 17:00:00 7 0 62.90% 0.08 539 1969/04/03 02:00:00 1969/04/03 05:00:00 4 0 63.00% 0.08 540 1969/06/11 09:00:00 1969/06/11 17:00:00 9 0 63.20% 0.08 541 1969/06/17 09:00:00 1969/06/17 13:00:00 5 0 63.30% 0.08 542 1969/08/10 05:00:00 1969/08/10 07:00:00 3 0 63.40% 0.08 543 1969/09/07 00:00:00 1969/09/07 02:00:00 3 0 63.50% 0.08 544 1969/11/15 21:00:00 1969/11/16 03:00:00 7 0 63.60% 0.08 545 1969/12/26 10:00:00 1969/12/26 15:00:00 6 0 63.70% 0.08 546 1970/01/10 01:00:00 1970/01/10 06:00:00 6 0 63.90% 0.08 547 1970/01/15 02:00:00 1970/01/15 08:00:00 7 0 64.00% 0.08 548 1970/01/18 14:00:00 1970/01/18 20:00:00 7 0 64.10% 0.08 549 1970/12/02 15:00:00 1970/12/02 21:00:00 7 0 64.20% 0.08 550 1971/05/03 09:00:00 1971/05/03 12:00:00 4 0 64.30% 0.08 551 1971/06/02 12:00:00 1971/06/02 17:00:00 6 0 64.40% 0.08 552 1971/06/05 14:00:00 1971/06/05 19:00:00 6 0 64.60% 0.08 553 1971/10/22 13:00:00 1971/10/22 18:00:00 6 0 64.70% 0.08 554 1971/10/24 11:00:00 1971/10/25 19:00:00 33 0 64.80% 0.08 555 1971/10/30 10:00:00 1971/10/30 15:00:00 6 0 64.90% 0.08 556 1971/11/13 13:00:00 1971/11/13 17:00:00 5 0 65.00% 0.08 12/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 557 1971/11/15 16:00:00 1971/11/15 22:00:00 7 0 65.10% 0.08 558 1971/11/29 06:00:00 1971/11/29 11:00:00 6 0 65.30% 0.08 559 1972/04/13 03:00:00 1972/04/13 13:00:00 11 0 65.40% 0.08 560 1972/04/21 09:00:00 1972/04/21 13:00:00 5 0 65.50% 0.08 561 1972/06/07 04:00:00 1972/06/07 06:00:00 3 0 65.60% 0.08 562 1972/06/10 02:00:00 1972/06/10 04:00:00 3 0 65.70% 0.08 563 1972/06/22 13:00:00 1972/06/22 15:00:00 3 0 65.80% 0.08 564 1972/09/06 05:00:00 1972/09/07 01:00:00 21 0 66.00% 0.08 565 1972/10/11 15:00:00 1972/10/11 18:00:00 4 0 66.10% 0.08 566 1972/10/17 09:00:00 1972/10/17 12:00:00 4 0 66.20% 0.08 567 1972/11/08 01:00:00 1972/11/08 04:00:00 4 0 66.30% 0.08 568 1973/01/25 21:00:00 1973/01/26 03:00:00 7 0 66.40% 0.08 569 1973/01/30 13:00:00 1973/01/30 19:00:00 7 0 66.50% 0.08 570 1973/02/07 15:00:00 1973/02/07 21:00:00 7 0 66.70% 0.08 571 1973/02/21 09:00:00 1973/02/21 14:00:00 6 0 66.80% 0.08 572 1973/04/21 10:00:00 1973/04/21 12:00:00 3 0 66.90% 0.08 573 1973/05/23 15:00:00 1973/05/23 17:00:00 3 0 67.00% 0.08 574 1973/05/28 10:00:00 1973/05/28 12:00:00 3 0 67.10% 0.08 575 1973/05/31 09:00:00 1973/05/31 14:00:00 6 0 67.30% 0.08 576 1973/12/16 15:00:00 1973/12/16 20:00:00 6 0 67.40% 0.08 577 1973/12/20 14:00:00 1973/12/20 20:00:00 7 0 67.50% 0.08 578 1973/12/22 03:00:00 1973/12/22 09:00:00 7 0 67.60% 0.08 579 1974/02/18 16:00:00 1974/02/20 01:00:00 34 0 67.70% 0.08 580 1974/06/08 12:00:00 1974/06/08 14:00:00 3 0 67.80% 0.08 581 1974/11/01 23:00:00 1974/11/02 05:00:00 7 0 68.00% 0.08 582 1974/11/03 16:00:00 1974/11/03 22:00:00 7 0 68.10% 0.08 583 1975/02/14 05:00:00 1975/02/14 11:00:00 7 0 68.20% 0.08 584 1975/03/25 10:00:00 1975/03/26 04:00:00 19 0 68.30% 0.08 585 1975/04/23 15:00:00 1975/04/23 20:00:00 6 0 68.40% 0.08 586 1975/05/20 02:00:00 1975/05/20 04:00:00 3 0 68.50% 0.08 587 1975/06/07 14:00:00 1975/06/07 16:00:00 3 0 68.70% 0.08 588 1975/10/28 22:00:00 1975/10/29 01:00:00 4 0 68.80% 0.08 589 1975/12/20 00:00:00 1975/12/20 06:00:00 7 0 68.90% 0.08 590 1976/04/04 09:00:00 1976/04/05 04:00:00 20 0 69.00% 0.08 591 1976/09/03 17:00:00 1976/09/03 19:00:00 3 0 69.10% 0.08 592 1976/09/14 11:00:00 1976/09/14 16:00:00 6 0 69.20% 0.08 593 1977/01/21 15:00:00 1977/01/21 20:00:00 6 0 69.40% 0.08 594 1977/04/02 01:00:00 1977/04/02 06:00:00 6 0 69.50% 0.08 595 1977/05/05 21:00:00 1977/05/05 23:00:00 3 0 69.60% 0.08 596 1977/08/12 11:00:00 1977/08/12 13:00:00 3 0 69.70% 0.08 597 1977/10/06 03:00:00 1977/10/06 06:00:00 4 0 69.80% 0.08 598 1977/11/06 02:00:00 1977/11/06 05:00:00 4 0 69.90% 0.08 599 1978/01/12 16:00:00 1978/01/12 22:00:00 7 0 70.10% 0.08 600 1978/01/26 10:00:00 1978/01/26 16:00:00 7 0 70.20% 0.08 601 1978/04/02 17:00:00 1978/04/02 23:00:00 7 0 70.30% 0.08 602 1978/04/26 09:00:00 1978/04/26 12:00:00 4 0 70.40% 0.08 603 1978/05/01 11:00:00 1978/05/01 16:00:00 6 0 70.50% 0.08 13/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 604 1978/09/19 13:00:00 1978/09/19 15:00:00 3 0 70.60% 0.08 605 1979/01/29 09:00:00 1979/01/29 14:00:00 6 0 70.80% 0.07 606 1979/03/13 10:00:00 1979/03/13 14:00:00 5 0 70.90% 0.07 607 1979/03/15 22:00:00 1979/03/16 04:00:00 7 0 71.00% 0.07 608 1979/05/19 15:00:00 1979/05/19 17:00:00 3 0 71.10% 0.07 609 1979/08/13 15:00:00 1979/08/13 17:00:00 3 0 71.20% 0.07 610 1979/11/04 07:00:00 1979/11/04 11:00:00 5 0 71.30% 0.07 611 1979/11/05 14:00:00 1979/11/05 20:00:00 7 0 71.50% 0.07 612 1979/12/22 10:00:00 1979/12/22 14:00:00 5 0 71.60% 0.07 613 1980/01/15 10:00:00 1980/01/15 16:00:00 7 0 71.70% 0.07 614 1980/03/18 08:00:00 1980/03/19 01:00:00 18 0 71.80% 0.07 615 1980/04/21 04:00:00 1980/04/21 06:00:00 3 0 71.90% 0.07 616 1980/05/01 23:00:00 1980/05/02 04:00:00 6 0 72.00% 0.07 617 1980/10/26 10:00:00 1980/10/26 13:00:00 4 0 72.20% 0.07 618 1980/12/11 14:00:00 1980/12/11 20:00:00 7 0 72.30% 0.07 619 1981/01/11 17:00:00 1981/01/11 21:00:00 5 0 72.40% 0.07 620 1981/03/14 02:00:00 1981/03/14 07:00:00 6 0 72.50% 0.07 621 1981/04/02 06:00:00 1981/04/03 03:00:00 22 0 72.60% 0.07 622 1981/05/16 11:00:00 1981/05/16 13:00:00 3 0 72.70% 0.07 623 1981/05/27 01:00:00 1981/05/27 03:00:00 3 0 72.90% 0.07 624 1981/10/01 02:00:00 1981/10/01 05:00:00 4 0 73.00% 0.07 625 1981/10/28 23:00:00 1981/10/29 02:00:00 4 0 73.10% 0.07 626 1981/12/21 04:00:00 1981/12/21 08:00:00 5 0 73.20% 0.07 627 1982/02/05 14:00:00 1982/02/05 19:00:00 6 0 73.30% 0.07 628 1982/02/08 03:00:00 1982/02/08 09:00:00 7 0 73.50% 0.07 629 1982/02/16 09:00:00 1982/02/16 15:00:00 7 0 73.60% 0.07 630 1982/03/12 14:00:00 1982/03/12 18:00:00 5 0 73.70% 0.07 631 1982/04/05 15:00:00 1982/04/05 20:00:00 6 0 73.80% 0.07 632 1982/05/11 08:00:00 1982/05/11 10:00:00 3 0 73.90% 0.07 633 1982/05/26 13:00:00 1982/05/26 15:00:00 3 0 74.00% 0.07 634 1982/09/16 13:00:00 1982/09/16 15:00:00 3 0 74.20% 0.07 635 1982/09/22 13:00:00 1982/09/22 15:00:00 3 0 74.30% 0.07 636 1982/10/26 10:00:00 1982/10/26 13:00:00 4 0 74.40% 0.07 637 1982/10/31 15:00:00 1982/10/31 18:00:00 4 0 74.50% 0.07 638 1983/03/15 10:00:00 1983/03/15 15:00:00 6 0 74.60% 0.07 639 1983/08/07 09:00:00 1983/08/07 11:00:00 3 0 74.70% 0.07 640 1983/08/18 09:00:00 1983/08/18 22:00:00 14 0 74.90% 0.07 641 1983/11/18 02:00:00 1983/11/18 08:00:00 7 0 75.00% 0.07 642 1983/12/22 11:00:00 1983/12/22 14:00:00 4 0 75.10% 0.07 643 1984/03/24 13:00:00 1984/03/24 16:00:00 4 0 75.20% 0.07 644 1984/10/17 08:00:00 1984/10/17 10:00:00 3 0 75.30% 0.07 645 1984/11/13 10:00:00 1984/11/13 13:00:00 4 0 75.40% 0.07 646 1984/11/22 16:00:00 1984/11/22 19:00:00 4 0 75.60% 0.07 647 1984/11/24 16:00:00 1984/11/24 19:00:00 4 0 75.70% 0.07 648 1984/12/12 23:00:00 1984/12/13 02:00:00 4 0 75.80% 0.07 649 1984/12/18 14:00:00 1984/12/19 23:00:00 34 0 75.90% 0.07 650 1985/01/09 13:00:00 1985/01/09 17:00:00 5 0 76.00% 0.07 14/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 651 1985/03/12 11:00:00 1985/03/12 15:00:00 5 0 76.10% 0.07 652 1985/04/21 14:00:00 1985/04/22 06:00:00 17 0 76.30% 0.07 653 1985/05/30 15:00:00 1985/05/30 18:00:00 4 0 76.40% 0.07 654 1985/06/02 22:00:00 1985/06/03 03:00:00 6 0 76.50% 0.07 655 1985/07/18 16:00:00 1985/07/18 17:00:00 2 0 76.60% 0.07 656 1985/08/10 14:00:00 1985/08/10 16:00:00 3 0 76.70% 0.07 657 1985/09/04 11:00:00 1985/09/04 14:00:00 4 0 76.80% 0.07 658 1985/10/22 00:00:00 1985/10/22 05:00:00 6 0 77.00% 0.07 659 1985/11/27 09:00:00 1985/11/27 12:00:00 4 0 77.10% 0.07 660 1986/01/02 15:00:00 1986/01/02 23:00:00 9 0 77.20% 0.07 661 1986/02/13 09:00:00 1986/02/13 12:00:00 4 0 77.30% 0.07 662 1986/02/18 22:00:00 1986/02/19 17:00:00 20 0 77.40% 0.07 663 1986/05/22 10:00:00 1986/05/22 11:00:00 2 0 77.50% 0.07 664 1986/07/22 14:00:00 1986/07/22 17:00:00 4 0 77.70% 0.07 665 1986/08/18 06:00:00 1986/08/18 08:00:00 3 0 77.80% 0.07 666 1986/09/18 11:00:00 1986/09/18 13:00:00 3 0 77.90% 0.07 667 1986/12/20 06:00:00 1986/12/20 19:00:00 14 0 78.00% 0.07 668 1986/12/30 16:00:00 1986/12/30 19:00:00 4 0 78.10% 0.07 669 1987/02/01 01:00:00 1987/02/01 04:00:00 4 0 78.20% 0.07 670 1987/02/13 19:00:00 1987/02/14 07:00:00 13 0 78.40% 0.07 671 1987/02/15 15:00:00 1987/02/15 18:00:00 4 0 78.50% 0.07 672 1987/03/06 12:00:00 1987/03/06 14:00:00 3 0 78.60% 0.07 673 1987/03/15 01:00:00 1987/03/15 03:00:00 3 0 78.70% 0.07 674 1987/03/21 16:00:00 1987/03/21 23:00:00 8 0 78.80% 0.07 675 1987/03/23 21:00:00 1987/03/23 23:00:00 3 0 78.90% 0.07 676 1987/05/01 01:00:00 1987/05/01 02:00:00 2 0 79.10% 0.07 677 1987/05/20 08:00:00 1987/05/20 10:00:00 3 0 79.20% 0.07 678 1987/07/18 00:00:00 1987/07/18 02:00:00 3 0 79.30% 0.07 679 1987/08/14 09:00:00 1987/08/14 10:00:00 2 0 79.40% 0.07 680 1987/09/01 01:00:00 1987/09/01 03:00:00 3 0 79.50% 0.07 681 1987/09/13 05:00:00 1987/09/13 07:00:00 3 0 79.60% 0.07 682 1987/10/07 09:00:00 1987/10/07 11:00:00 3 0 79.80% 0.07 683 1987/11/14 02:00:00 1987/11/14 09:00:00 8 0 79.90% 0.07 684 1987/11/17 21:00:00 1987/11/18 03:00:00 7 0 80.00% 0.07 685 1987/11/20 16:00:00 1987/11/20 21:00:00 6 0 80.10% 0.07 686 1987/12/07 05:00:00 1987/12/07 08:00:00 4 0 80.20% 0.07 687 1987/12/29 15:00:00 1987/12/30 09:00:00 19 0 80.40% 0.07 688 1988/05/05 22:00:00 1988/05/05 23:00:00 2 0 80.50% 0.07 689 1988/05/29 04:00:00 1988/05/29 09:00:00 6 0 80.60% 0.07 690 1988/05/31 16:00:00 1988/05/31 17:00:00 2 0 80.70% 0.07 691 1988/11/23 22:00:00 1988/11/24 04:00:00 7 0 80.80% 0.07 692 1988/12/28 00:00:00 1988/12/28 03:00:00 4 0 80.90% 0.07 693 1989/01/07 16:00:00 1989/01/07 23:00:00 8 0 81.10% 0.07 694 1989/01/28 14:00:00 1989/01/28 17:00:00 4 0 81.20% 0.07 695 1989/03/02 19:00:00 1989/03/03 06:00:00 12 0 81.30% 0.07 696 1989/03/08 20:00:00 1989/03/08 22:00:00 3 0 81.40% 0.07 697 1989/04/12 06:00:00 1989/04/12 08:00:00 3 0 81.50% 0.07 15/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 698 1989/04/26 03:00:00 1989/04/26 05:00:00 3 0 81.60% 0.06 699 1989/05/15 12:00:00 1989/05/15 13:00:00 2 0 81.80% 0.06 700 1989/09/17 04:00:00 1989/09/17 18:00:00 15 0 81.90% 0.06 701 1989/09/19 10:00:00 1989/09/19 14:00:00 5 0 82.00% 0.06 702 1989/10/25 20:00:00 1989/10/25 22:00:00 3 0 82.10% 0.06 703 1989/11/26 08:00:00 1989/11/26 21:00:00 14 0 82.20% 0.06 704 1990/03/05 16:00:00 1990/03/05 18:00:00 3 0 82.30% 0.06 705 1990/03/28 18:00:00 1990/03/28 21:00:00 4 0 82.50% 0.06 706 1990/04/16 21:00:00 1990/04/17 14:00:00 18 0 82.60% 0.06 707 1990/04/18 19:00:00 1990/04/19 21:00:00 27 0 82.70% 0.06 708 1990/04/25 00:00:00 1990/04/25 02:00:00 3 0 82.80% 0.06 709 1990/07/13 12:00:00 1990/07/13 13:00:00 2 0 82.90% 0.06 710 1990/08/06 00:00:00 1990/08/06 02:00:00 3 0 83.00% 0.06 711 1990/08/09 16:00:00 1990/08/09 18:00:00 3 0 83.20% 0.06 712 1990/12/15 22:00:00 1990/12/16 01:00:00 4 0 83.30% 0.06 713 1991/03/11 02:00:00 1991/03/11 14:00:00 13 0 83.40% 0.06 714 1991/04/21 03:00:00 1991/04/21 05:00:00 3 0 83.50% 0.06 715 1991/07/31 11:00:00 1991/07/31 13:00:00 3 0 83.60% 0.06 716 1991/09/20 17:00:00 1991/09/20 20:00:00 4 0 83.70% 0.06 717 1991/11/29 19:00:00 1991/11/29 22:00:00 4 0 83.90% 0.06 718 1991/12/08 17:00:00 1991/12/08 20:00:00 4 0 84.00% 0.06 719 1991/12/09 23:00:00 1991/12/11 12:00:00 38 0 84.10% 0.06 720 1992/03/06 18:00:00 1992/03/08 09:00:00 40 0 84.20% 0.06 721 1992/03/29 11:00:00 1992/03/29 13:00:00 3 0 84.30% 0.06 722 1992/05/05 22:00:00 1992/05/05 23:00:00 2 0 84.40% 0.06 723 1992/05/22 17:00:00 1992/05/22 21:00:00 5 0 84.60% 0.06 724 1992/08/13 16:00:00 1992/08/13 18:00:00 3 0 84.70% 0.06 725 1992/10/21 16:00:00 1992/10/21 18:00:00 3 0 84.80% 0.06 726 1992/10/23 04:00:00 1992/10/23 12:00:00 9 0 84.90% 0.06 727 1992/10/28 23:00:00 1992/10/29 07:00:00 9 0 85.00% 0.06 728 1992/11/20 16:00:00 1992/11/20 19:00:00 4 0 85.10% 0.06 729 1992/11/22 23:00:00 1992/11/23 02:00:00 4 0 85.30% 0.06 730 1992/12/11 17:00:00 1992/12/12 02:00:00 10 0 85.40% 0.06 731 1993/02/22 06:00:00 1993/02/22 09:00:00 4 0 85.50% 0.06 732 1993/02/26 15:00:00 1993/02/27 14:00:00 24 0 85.60% 0.06 733 1993/10/16 06:00:00 1993/10/16 08:00:00 3 0 85.70% 0.06 734 1993/11/11 05:00:00 1993/11/12 20:00:00 40 0 85.80% 0.06 735 1993/12/19 04:00:00 1993/12/19 11:00:00 8 0 86.00% 0.06 736 1994/02/11 07:00:00 1994/02/11 10:00:00 4 0 86.10% 0.06 737 1994/04/24 04:00:00 1994/04/24 07:00:00 4 0 86.20% 0.06 738 1994/05/08 09:00:00 1994/05/08 10:00:00 2 0 86.30% 0.06 739 1994/05/15 02:00:00 1994/05/15 03:00:00 2 0 86.40% 0.06 740 1994/11/18 03:00:00 1994/11/18 11:00:00 9 0 86.50% 0.06 741 1994/11/26 11:00:00 1994/11/26 14:00:00 4 0 86.70% 0.06 742 1994/12/13 06:00:00 1994/12/13 09:00:00 4 0 86.80% 0.06 743 1994/12/17 15:00:00 1994/12/17 19:00:00 5 0 86.90% 0.06 744 1994/12/22 07:00:00 1994/12/23 02:00:00 20 0 87.00% 0.06 16/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 745 1995/04/07 10:00:00 1995/04/07 13:00:00 4 0 87.10% 0.06 746 1995/05/06 02:00:00 1995/05/06 14:00:00 13 0 87.30% 0.06 747 1995/05/13 07:00:00 1995/05/13 13:00:00 7 0 87.40% 0.06 748 1995/05/14 21:00:00 1995/05/15 05:00:00 9 0 87.50% 0.06 749 1995/05/23 13:00:00 1995/05/23 14:00:00 2 0 87.60% 0.06 750 1995/07/16 08:00:00 1995/07/16 09:00:00 2 0 87.70% 0.06 751 1995/10/01 01:00:00 1995/10/01 03:00:00 3 0 87.80% 0.06 752 1995/11/01 03:00:00 1995/11/01 11:00:00 9 0 88.00% 0.06 753 1995/12/13 04:00:00 1995/12/14 12:00:00 33 0 88.10% 0.06 754 1996/01/16 19:00:00 1996/01/17 08:00:00 14 0 88.20% 0.06 755 1996/01/25 11:00:00 1996/01/25 23:00:00 13 0 88.30% 0.06 756 1996/01/28 08:00:00 1996/01/28 11:00:00 4 0 88.40% 0.06 757 1996/05/24 15:00:00 1996/05/24 16:00:00 2 0 88.50% 0.06 758 1996/07/10 14:00:00 1996/07/10 15:00:00 2 0 88.70% 0.06 759 1996/07/19 10:00:00 1996/07/19 11:00:00 2 0 88.80% 0.06 760 1996/10/25 22:00:00 1996/10/26 00:00:00 3 0 88.90% 0.06 761 1996/11/29 02:00:00 1996/11/29 06:00:00 5 0 89.00% 0.06 762 1996/12/27 16:00:00 1996/12/28 12:00:00 21 0 89.10% 0.06 763 1997/01/02 01:00:00 1997/01/02 07:00:00 7 0 89.20% 0.06 764 1997/02/17 18:00:00 1997/02/18 16:00:00 23 0 89.40% 0.06 765 1997/04/08 10:00:00 1997/04/08 12:00:00 3 0 89.50% 0.06 766 1997/05/24 07:00:00 1997/05/24 08:00:00 2 0 89.60% 0.06 767 1997/12/18 15:00:00 1997/12/18 21:00:00 7 0 89.70% 0.06 768 1997/12/21 08:00:00 1997/12/22 19:00:00 36 0 89.80% 0.06 769 1998/01/02 16:00:00 1998/01/05 02:00:00 59 0 89.90% 0.06 770 1998/01/13 11:00:00 1998/01/13 23:00:00 13 0 90.10% 0.06 771 1998/01/15 15:00:00 1998/01/16 20:00:00 30 0 90.20% 0.06 772 1998/03/01 17:00:00 1998/03/01 18:00:00 2 0 90.30% 0.06 773 1998/03/15 11:00:00 1998/03/15 22:00:00 12 0 90.40% 0.06 774 1998/04/06 17:00:00 1998/04/07 19:00:00 27 0 90.50% 0.06 775 1998/04/19 15:00:00 1998/04/19 19:00:00 5 0 90.60% 0.06 776 1998/04/28 11:00:00 1998/04/28 20:00:00 10 0 90.80% 0.06 777 1998/05/26 17:00:00 1998/05/26 17:00:00 1 0 90.90% 0.06 778 1998/06/12 17:00:00 1998/06/12 17:00:00 1 0 91.00% 0.06 779 2000/01/01 09:00:00 2000/01/02 20:00:00 36 0 91.10% 0.06 780 2000/01/17 17:00:00 2000/01/17 19:00:00 3 0 91.20% 0.06 781 2000/01/25 12:00:00 2000/01/25 22:00:00 11 0 91.30% 0.06 782 2000/02/11 09:00:00 2000/02/11 23:00:00 15 0 91.50% 0.06 783 2000/02/28 15:00:00 2000/02/28 19:00:00 5 0 91.60% 0.06 784 2000/04/14 22:00:00 2000/04/15 00:00:00 3 0 91.70% 0.06 785 2000/04/21 19:00:00 2000/04/22 07:00:00 13 0 91.80% 0.06 786 2000/05/25 23:00:00 2000/05/26 02:00:00 4 0 91.90% 0.06 787 2000/09/23 02:00:00 2000/09/23 04:00:00 3 0 92.00% 0.06 788 2000/10/06 13:00:00 2000/10/06 15:00:00 3 0 92.20% 0.06 789 2000/10/10 08:00:00 2000/10/11 11:00:00 28 0 92.30% 0.06 790 2000/10/21 18:00:00 2000/10/21 21:00:00 4 0 92.40% 0.06 791 2000/10/26 09:00:00 2000/10/27 04:00:00 20 0 92.50% 0.06 17/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 792 2000/11/22 21:00:00 2000/11/23 00:00:00 4 0 92.60% 0.06 793 2001/01/15 21:00:00 2001/01/16 00:00:00 4 0 92.70% 0.06 794 2001/08/20 15:00:00 2001/08/21 17:00:00 27 0 92.90% 0.06 795 2001/11/04 16:00:00 2001/11/04 19:00:00 4 0 93.00% 0.06 796 2001/11/12 17:00:00 2001/11/13 21:00:00 29 0 93.10% 0.06 797 2001/11/29 09:00:00 2001/11/30 01:00:00 17 0 93.20% 0.06 798 2001/12/14 11:00:00 2001/12/15 19:00:00 33 0 93.30% 0.06 799 2001/12/30 16:00:00 2001/12/30 20:00:00 5 0 93.50% 0.06 800 2002/01/03 17:00:00 2002/01/03 19:00:00 3 0 93.60% 0.06 801 2002/01/28 03:00:00 2002/01/29 14:00:00 36 0 93.70% 0.06 802 2002/02/17 17:00:00 2002/02/18 19:00:00 27 0 93.80% 0.06 803 2002/03/16 06:00:00 2002/03/16 13:00:00 8 0 93.90% 0.06 804 2002/03/24 02:00:00 2002/03/24 06:00:00 5 0 94.00% 0.06 805 2002/04/15 09:00:00 2002/04/15 10:00:00 2 0 94.20% 0.06 806 2002/04/24 11:00:00 2002/04/24 19:00:00 9 0 94.30% 0.06 807 2002/04/26 09:00:00 2002/04/26 10:00:00 2 0 94.40% 0.06 808 2002/05/20 23:00:00 2002/05/21 00:00:00 2 0 94.50% 0.06 809 2002/09/06 16:00:00 2002/09/06 18:00:00 3 0 94.60% 0.06 810 2002/12/29 16:00:00 2002/12/29 20:00:00 5 0 94.70% 0.06 811 2003/03/04 16:00:00 2003/03/04 19:00:00 4 0 94.90% 0.06 812 2003/04/05 17:00:00 2003/04/05 17:00:00 1 0 95.00% 0.06 813 2003/04/17 11:00:00 2003/04/17 21:00:00 11 0 95.10% 0.06 814 2003/05/07 17:00:00 2003/05/07 17:00:00 1 0 95.20% 0.06 815 2003/06/10 17:00:00 2003/06/11 17:00:00 25 0 95.30% 0.06 816 2003/06/20 17:00:00 2003/06/20 17:00:00 1 0 95.40% 0.06 817 2003/07/30 07:00:00 2003/07/30 08:00:00 2 0 95.60% 0.06 818 2003/11/01 05:00:00 2003/11/01 08:00:00 4 0 95.70% 0.06 819 2003/11/03 18:00:00 2003/11/04 02:00:00 9 0 95.80% 0.06 820 2003/11/16 01:00:00 2003/11/16 08:00:00 8 0 95.90% 0.06 821 2003/12/07 21:00:00 2003/12/08 06:00:00 10 0 96.00% 0.06 822 2003/12/11 17:00:00 2003/12/11 20:00:00 4 0 96.10% 0.06 823 2004/01/02 19:00:00 2004/01/03 07:00:00 13 0 96.30% 0.06 824 2004/01/19 08:00:00 2004/01/19 13:00:00 6 0 96.40% 0.06 825 2004/01/25 03:00:00 2004/01/25 06:00:00 4 0 96.50% 0.06 826 2004/01/31 07:00:00 2004/01/31 10:00:00 4 0 96.60% 0.05 827 2004/03/26 10:00:00 2004/03/26 12:00:00 3 0 96.70% 0.05 828 2004/11/12 12:00:00 2004/11/12 15:00:00 4 0 96.80% 0.05 829 2004/12/08 07:00:00 2004/12/08 10:00:00 4 0 97.00% 0.05 830 2005/01/26 02:00:00 2005/01/27 06:00:00 29 0 97.10% 0.05 831 2005/02/07 08:00:00 2005/02/07 11:00:00 4 0 97.20% 0.05 832 2005/03/18 17:00:00 2005/03/20 10:00:00 42 0 97.30% 0.05 833 2005/05/06 02:00:00 2005/05/06 03:00:00 2 0 97.40% 0.05 834 2005/07/23 05:00:00 2005/07/23 06:00:00 2 0 97.50% 0.05 835 2005/12/03 02:00:00 2005/12/03 05:00:00 4 0 97.70% 0.05 836 2006/03/03 17:00:00 2006/03/03 19:00:00 3 0 97.80% 0.05 837 2006/03/07 01:00:00 2006/03/08 12:00:00 36 0 97.90% 0.05 838 2006/03/26 00:00:00 2006/03/26 06:00:00 7 0 98.00% 0.05 18/193/31/2023 10:59 AM

Excel Engineering

peakFlowStatisticsPostMitigated
Rank Start Date End Date Duration (hr) Peak (cfs) Freque ncy (%) Return Period (Yr) 839 2006/04/23 06:00:00 2006/04/23 08:00:00 3 0 98.10% 0.05 840 2006/07/29 00:00:00 2006/07/29 06:00:00 7 0 98.20% 0.05 841 2006/07/30 08:00:00 2006/07/31 08:00:00 25 0 98.40% 0.05 842 2006/11/27 10:00:00 2006/11/28 05:00:00 20 0 98.50% 0.05 843 2006/12/22 08:00:00 2006/12/22 11:00:00 4 0 98.60% 0.05 844 2006/12/27 07:00:00 2006/12/27 17:00:00 11 0 98.70% 0.05 845 2007/01/04 22:00:00 2007/01/05 05:00:00 8 0 98.80% 0.05 846 2007/02/11 12:00:00 2007/02/11 18:00:00 7 0 98.90% 0.05 847 2007/02/27 00:00:00 2007/02/27 03:00:00 4 0 99.10% 0.05 848 2007/03/21 04:00:00 2007/03/21 14:00:00 11 0 99.20% 0.05 849 2007/03/27 05:00:00 2007/03/27 18:00:00 14 0 99.30% 0.05 850 2007/05/23 01:00:00 2007/05/23 04:00:00 4 0 99.40% 0.05 851 2007/09/22 11:00:00 2007/09/22 13:00:00 3 0 99.50% 0.05 852 2007/10/13 03:00:00 2007/10/13 09:00:00 7 0 99.60% 0.05 853 2007/10/17 09:00:00 2007/10/17 11:00:00 3 0 99.80% 0.05 854 2008/01/21 08:00:00 2008/01/21 15:00:00 8 0 99.90% 0.05 -------------End of Data-----------------
19/193/31/2023 10:59 AM

Excel Engineering

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/uni0031/uni002E/uni0030
/uni0031/uni002E/uni0035
/uni0032/uni002E/uni0030
/uni0046/uni006C/uni006F/uni0077/uni0020/uni0052/uni0061/uni0074/uni0065/uni0020/uni0028/uni0063/uni0066/uni0073/uni0029 /uni0050/uni0072/uni0065/uni0020/uni0044/uni0065/uni0076/uni0065/uni006C/uni006F/uni0070/uni006D/uni0065/uni006E/uni0074 /uni0050/uni006F/uni0073/uni0074/uni0020/uni0044/uni0065/uni0076/uni0065/uni006C/uni006F/uni0070/uni006D/uni0065/uni006E/uni0074/uni0020/uni004D/uni0069/uni0074/uni0069/uni0067/uni0061/uni0074/uni0065/uni0064 /uni0051/uni0031/uni0030/uni0020/uni0028/uni0032/uni002E/uni0031/uni0063/uni0066/uni0073/uni0029 /uni0051/uni006C/uni0066/uni0020/uni0028/uni0030/uni002E/uni0031/uni0035/uni0063/uni0066/uni0073/uni0029

Excel Engineering

flowDurationPassFailMitigated
Compared to:
pre-development SWMM file: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Pre-Development.out pre-development time stamp: 3/30/2023 5:56:07 PM
Compare Post-Development Curve to Pre-Development Curve Flow Control Upper Limit: 2.1 (cfs)
Flow Control Lower Limit: 0.15 (cfs)
post-development SWMM file: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Post-Development-1.out post-development time stamp: 3/31/2023 10:57:26 AM
Post PT #
Flow R
ate (cfs)
Post De
v % E
xceed
Pre De
v % E
xceed
%Ex
post
< %Ex
pre
%Ex
post
> %Ex
pre
%Ex
post
> 110%
%E
x p
re
Pass/Fa
il
0 0.20 0.40 0.40 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 1 0.20 0.30 0.30 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 2 0.20 0.30 0.30 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 3 0.20 0.30 0.30 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 4 0.20 0.20 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 5 0.20 0.20 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 6 0.30 0.20 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 7 0.30 0.20 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 8 0.30 0.20 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 9 0.30 0.20 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 10 0.30 0.20 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 11 0.40 0.10 0.20 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 12 0.40 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 13 0.40 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 14 0.40 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 15 0.40 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 16 0.50 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 17 0.50 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 18 0.50 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 19 0.50 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 20 0.50 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 21 0.60 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 22 0.60 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 23 0.60 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 24 0.60 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 25 0.60 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 26 0.70 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 27 0.70 0.10 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 28 0.70 0.00 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 29 0.70 0.00 0.10 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 1/33/31/2023 10:59 AM

Excel Engineering

flowDurationPassFailMitigated
Post PT #
Flow R
ate (cfs)
Post De
v % E
xceed
Pre De
v % E
xceed
%Ex
post
< %Ex
pre
%Ex
post
> %Ex
pre
%Ex
post
> 110%
%E
x p
re
Pass/Fa
il
30 0.70 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 31 0.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 32 0.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 33 0.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 34 0.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 35 0.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 36 0.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 37 0.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 38 0.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 39 0.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 40 0.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 41 1.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 42 1.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 43 1.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 44 1.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 45 1.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 46 1.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 47 1.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 48 1.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 49 1.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 50 1.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 51 1.20 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 52 1.20 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 53 1.20 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 54 1.20 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 55 1.20 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 56 1.30 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 57 1.30 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 58 1.30 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 59 1.30 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 60 1.30 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 61 1.40 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 62 1.40 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 63 1.40 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 64 1.40 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 65 1.40 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 66 1.40 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 67 1.50 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 68 1.50 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 69 1.50 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 2/33/31/2023 10:59 AM

Excel Engineering

flowDurationPassFailMitigated
Post PT #
Flow R
ate (cfs)
Post De
v % E
xceed
Pre De
v % E
xceed
%Ex
post
< %Ex
pre
%Ex
post
> %Ex
pre
%Ex
post
> 110%
%E
x p
re
Pass/Fa
il
70 1.50 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 71 1.50 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 72 1.60 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 73 1.60 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 74 1.60 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 75 1.60 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 76 1.60 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 77 1.70 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 78 1.70 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 79 1.70 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 80 1.70 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 81 1.70 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 82 1.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 83 1.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 84 1.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 85 1.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 86 1.80 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 87 1.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 88 1.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 89 1.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 90 1.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 91 1.90 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 92 2.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 93 2.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 94 2.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 95 2.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 96 2.00 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 97 2.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 98 2.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 99 2.10 0.00 0.00 TRUE FALSE FALSE Pass: Post Duration <= Pre Duration 3/33/31/2023 10:59 AM

Excel Engineering

USGS9217dPre
DISCHARGE Number of periods when discharge was equal to or greater than DISCHARGE column but less than that shown on the next line
Duration Table Summary at Project Discharge Point
file name: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Pre-Development.out time stamp: 3/30/2023 5:56:07 PM
Bin Num
ber
Dis
charge Ra
te (cfs)
Nu
mber of Periods
To
tal Period
s Exceeding
Percent Time Excee
ded
1 0.2 123 1365 0.357
2 0.2 107 1242 0.324
3 0.2 102 1135 0.297
4 0.2 83 1033 0.270
5 0.2 97 950 0.248
6 0.2 70 853 0.223
7 0.3 59 783 0.205
8 0.3 41 724 0.189
9 0.3 38 683 0.178
10 0.3 36 645 0.169
11 0.3 33 609 0.159
12 0.4 28 576 0.150
13 0.4 26 548 0.143
14 0.4 27 522 0.136
15 0.4 21 495 0.129
16 0.4 27 474 0.124
17 0.5 28 447 0.117
18 0.5 32 419 0.109
19 0.5 38 387 0.101
20 0.5 34 349 0.091
21 0.5 29 315 0.082
22 0.6 28 286 0.075
23 0.6 14 258 0.067
24 0.6 13 244 0.064
25 0.6 9 231 0.060
26 0.6 7 222 0.058
27 0.7 8 215 0.056
28 0.7 6 207 0.054
29 0.7 9 201 0.053
30 0.7 9 192 0.050
31 0.7 10 183 0.048
32 0.8 12 173 0.045
33 0.8 11 161 0.042
34 0.8 11 150 0.039
35 0.8 8 139 0.036
36 0.8 11 131 0.034
37 0.9 13 120 0.031
38 0.9 4 107 0.028
39 0.9 6 103 0.027
40 0.9 2 97 0.025
41 0.9 4 95 0.025
42 1.0 4 91 0.024
43 1.0 3 87 0.023
44 1.0 2 84 0.022
45 1.0 3 82 0.021
46 1.0 2 79 0.021
47 1.1 3 77 0.020
48 1.1 4 74 0.019
49 1.1 2 70 0.018
50 1.1 3 68 0.018
51 1.1 1 65 0.017
1/23/31/2023 10:59 AM

Excel Engineering

USGS9217dPre
Bin Num
ber
Dis
charge Ra
te (cfs)
Nu
mber of Periods
To
tal Period
s Exceeding
Percent Time Excee
ded
52 1.2 2 64 0.017
53 1.2 7 62 0.016
54 1.2 2 55 0.014
55 1.2 4 53 0.014
56 1.2 2 49 0.013
57 1.3 2 47 0.012
58 1.3 0 45 0.012
59 1.3 2 45 0.012
60 1.3 2 43 0.011
61 1.3 0 41 0.011
62 1.4 3 41 0.011
63 1.4 1 38 0.010
64 1.4 1 37 0.010
65 1.4 4 36 0.009
66 1.4 1 32 0.008
67 1.5 1 31 0.008
68 1.5 0 30 0.008
69 1.5 3 30 0.008
70 1.5 3 27 0.007
71 1.5 2 24 0.006
72 1.5 1 22 0.006
73 1.6 1 21 0.005
74 1.6 1 20 0.005
75 1.6 0 19 0.005
76 1.6 1 19 0.005
77 1.6 0 18 0.005
78 1.7 1 18 0.005
79 1.7 0 17 0.004
80 1.7 1 17 0.004
81 1.7 2 16 0.004
82 1.7 0 14 0.004
83 1.8 3 14 0.004
84 1.8 0 11 0.003
85 1.8 1 11 0.003
86 1.8 1 10 0.003
87 1.8 1 9 0.002
88 1.9 2 8 0.002
89 1.9 3 6 0.002
90 1.9 0 3 0.001
91 1.9 0 3 0.001
92 1.9 1 3 0.001
93 2.0 0 2 0.001
94 2.0 1 2 0.001
95 2.0 0 1 0.000
96 2.0 1 1 0.000
97 2.0 0 0 0.000
98 2.1 0 0 0.000
99 2.1 0 0 0.000
100 2.1 0 0 0.000
-------------End of Data-----------------
2/23/31/2023 10:59 AM

Excel Engineering

USGS9217dPostMitigated
DISCHARGE Number of periods when discharge was equal to or greater than DISCHARGE column but less than that shown on the next line
Duration Table Summary at Project Discharge Point
file name: V:\22\22060\Engineering\Storm-TM\Working Files\Hydmod\working files after 2nd pcc\22060-Post-Development-1.out time stamp: 3/31/2023 10:57:26 AM
Bin Num
ber
Dis
charge Ra
te (cfs)
Nu
mber of Periods
To
tal Period
s Exceeding
Percent Time Excee
ded
1 0.2 267 1537 0.402
2 0.2 156 1270 0.332
3 0.2 94 1114 0.291
4 0.2 70 1020 0.266
5 0.2 72 950 0.248
6 0.2 65 878 0.229
7 0.3 47 813 0.212
8 0.3 71 766 0.200
9 0.3 74 695 0.182
10 0.3 34 621 0.162
11 0.3 45 587 0.153
12 0.4 26 542 0.142
13 0.4 21 516 0.135
14 0.4 27 495 0.129
15 0.4 20 468 0.122
16 0.4 24 448 0.117
17 0.5 25 424 0.111
18 0.5 21 399 0.104
19 0.5 20 378 0.099
20 0.5 24 358 0.094
21 0.5 18 334 0.087
22 0.6 30 316 0.083
23 0.6 27 286 0.075
24 0.6 12 259 0.068
25 0.6 26 247 0.065
26 0.6 10 221 0.058
27 0.7 15 211 0.055
28 0.7 10 196 0.051
29 0.7 8 186 0.049
30 0.7 11 178 0.047
31 0.7 9 167 0.044
32 0.8 9 158 0.041
33 0.8 13 149 0.039
34 0.8 11 136 0.036
35 0.8 12 125 0.033
36 0.8 6 113 0.030
37 0.9 8 107 0.028
38 0.9 6 99 0.026
39 0.9 7 93 0.024
40 0.9 3 86 0.022
41 0.9 4 83 0.022
42 1.0 3 79 0.021
43 1.0 5 76 0.020
44 1.0 4 71 0.019
45 1.0 4 67 0.018
46 1.0 5 63 0.016
47 1.1 4 58 0.015
48 1.1 2 54 0.014
49 1.1 4 52 0.014
50 1.1 4 48 0.013
51 1.1 7 44 0.011
1/23/31/2023 10:59 AM

Excel Engineering

USGS9217dPostMitigated
Bin Num
ber
Dis
charge Ra
te (cfs)
Nu
mber of Periods
To
tal Period
s Exceeding
Percent Time Excee
ded
52 1.2 3 37 0.010
53 1.2 4 34 0.009
54 1.2 2 30 0.008
55 1.2 2 28 0.007
56 1.2 0 26 0.007
57 1.3 3 26 0.007
58 1.3 1 23 0.006
59 1.3 2 22 0.006
60 1.3 0 20 0.005
61 1.3 2 20 0.005
62 1.4 0 18 0.005
63 1.4 1 18 0.005
64 1.4 1 17 0.004
65 1.4 2 16 0.004
66 1.4 1 14 0.004
67 1.5 0 13 0.003
68 1.5 0 13 0.003
69 1.5 1 13 0.003
70 1.5 0 12 0.003
71 1.5 2 12 0.003
72 1.5 1 10 0.003
73 1.6 0 9 0.002
74 1.6 0 9 0.002
75 1.6 0 9 0.002
76 1.6 4 9 0.002
77 1.6 0 5 0.001
78 1.7 0 5 0.001
79 1.7 0 5 0.001
80 1.7 0 5 0.001
81 1.7 0 5 0.001
82 1.7 0 5 0.001
83 1.8 0 5 0.001
84 1.8 0 5 0.001
85 1.8 0 5 0.001
86 1.8 0 5 0.001
87 1.8 0 5 0.001
88 1.9 0 5 0.001
89 1.9 4 5 0.001
90 1.9 0 1 0.000
91 1.9 0 1 0.000
92 1.9 0 1 0.000
93 2.0 1 1 0.000
94 2.0 0 0 0.000
95 2.0 0 0 0.000
96 2.0 0 0 0.000
97 2.0 0 0 0.000
98 2.1 0 0 0.000
99 2.1 0 0 0.000
100 2.1 0 0 0.000
-------------End of Data-----------------
2/23/31/2023 10:59 AM

Excel Engineering

END OF STATISTICS ANALYSIS
City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
ATTACHMENT 3
Structural BMP Maintenance Information

This is the cover sheet for Attachment 3.

Indicate which Items are Included behind this cover sheet:

Attachment
Sequence
Contents Checklist
Attachment 3a Structural BMP Maintenance Thresholds
and Actions (Required)


Included

See Structural BMP Maintenance
Information Checklist on the back of
this Attachment cover sheet.

Attachment 3b Draft Maintenance Agreement (when
applicable)
 Included
 Not Applicable

BF-1
Biofiltration

BMP MAINTENANCE FACT SHEET
FOR
STRUCTURAL BMP BF-1 BIOFILTRATION

Biofiltration facilities are vegetated surface water systems that filter water through vegetation, and soil or engineered media prior to discharge via underdrain or overflow to the downstream conveyance system.

Biofiltration facilities have limited or no infiltration. T hey are typically designed to provide enough hydraulic head to move flows through the underdrain connection to the storm drain system . Typical biofiltration components include:

• Inflow distribution mechanisms (e.g., perimeter flow spreader or filter strips ) • Energy dissipation mechanism for concentrated inflows (e.g., splash blocks or riprap) • Shallow surface ponding for captured flows
• Side slope and basin bottom vegetation selected based on climate and ponding depth • Non-floating mulch layer
• Media layer (planting mix or engineered media) capable of supporting vegetation growth • Filter course layer consisting of aggregate to prevent the migration of fines into uncompacted native soils or the aggregate storage layer
• Aggregate storage layer with underdrain(s)
• Impermeable liner or uncompacted native soils at the bottom of the facility • Overflow structure

Normal Expected Maintenance

Biofiltration requires routine maintenance to : remove accumulated materials such as sediment, trash or debris ; maintain vegetation health ; maintain infiltration capacity of the media layer ; replenish mulch; and maintain integrity of side slopes, inlets, energy dissipators, and outlets . A summary table of standard inspection and maintenance indicators is provided within this Fact Sheet.

Non-Standard Maintenance or BMP Failure

If any of the following scenarios are observed, the BMP is not performing as intended to protect downstream waterways from pollution and/or erosion . C orrective maintenance, increased inspection and maintenance, BMP replacement, or a different BMP type will be required.

• The BMP is not drained between storm events. Surface ponding longer than approximately 24 hours following a storm event may be detrimental to vegetation hea lth, and surface ponding longer than approximately 96 hours following a storm event poses a risk of vector (mosquito) breeding. Poor drainage can result from clogging of the media layer, filter course, aggregate storage layer, underdrain, or outlet structure. The specific cause of the drainage issue must be determined and corrected . • Sediment, trash, or debris accumulation greater than 25% of the surface ponding volume within one month. This means the load from the tributary drainage area is too high, reduci ng BMP function or clogging the BMP . This would require pretreatment measures within the tributary area draining to the BMP to intercept the materials. Pretreatment components, especially for sediment, will extend the life of components that are more expensive to replace such as media, filter course, and aggregate layers. • Erosion due to concentrated storm water runoff flow that is not readily corrected by adding erosion control blankets, adding stone at flow entry points, or minor re -grading to restore prop er drainage according to the original plan. If the issue is not corrected by restoring the BMP to the original plan and grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction.

BF-1 Page 1 of 11
January 12, 2017
BF-1
Biofiltration
Other Special Considerations

Biofiltration is a vegetated structural BMP. Vegetated structural BMPs that are constructed in the vicinity of, or connected to, an existing jurisdictional water or wetland could inadvertently result in creation of expanded waters or wetlands. As such, veg etated structural BMPs have the potential to come under the jurisdiction of the United States Army Corps of Engineers, SDRWQCB, California Department of Fish and Wildlife, or the United States Fish and Wildlife Service. This could result in the need for sp ecific resource agency permits and costly mitigation to perform maintenance of the structural BMP. Along with proper placement of a structural BMP, routine maintenance is key to preventing this scenario.

BF-1 Page 2 of 11
January 12, 2017
BF-1
Biofiltration

SUMMARY OF STANDARD INSPECTION AND MAINTENANCE FOR BF-1 BIOFILTRATION The property owner is responsible to ensure inspection, operation and maintenance of permanent BMPs on their property unless responsibility has been formally transferred to an agency, community facilities district, homeowners association, property owners association, or other special district.

Maintenance frequencies listed in this table are average/typical frequencies. Actual maintenance needs are site-specific, and maintenance may be required more frequently.

Maintenance must be performed whenever needed, based on maintenance indicators presented in this table. The BMP owner is responsible for conducting regular inspections to see when maintenance is needed based on the maintenance indicators. During the first year of operation of a structural BMP, inspection is recommended at least once prior to August 31 and then monthly from September through May. Inspection during a storm event is also recommended. After the initial period of frequent inspections, the minimum inspection and maintenance frequency can be determined based on the results of the first year inspections.

Threshold/Indicator Maintenance Action Typical Maintenance Frequency Accumulation of sediment, litter, or debris Remove and properly dispose of accumulated materials, without damage to the vegetation or compaction of the
media layer.
• Inspect monthly. If the BMP is 25% full* or more in
one month, increase inspection frequency to monthly
plus after every 0.1-inch or larger storm event.
• Remove any accumulated materials found at each
inspection.

Obstructed inlet or outlet structure Clear blockage. • Inspect monthly and after every 0.5 -inch or la rger storm event.
• Remove any accumulated materials found at each
inspection.

Damage to structural components such as weirs, inlet or outlet structures
Repair or replace as applicable • Inspect annually.
• Maintenance when needed.

Poor vegetation establishment Re-seed, re-plant, or re -establish vegetation per original plans.
• Inspect monthly.
• Maintenance when needed.

Dead or diseased vegetation Remove dead or diseased vegetation, re -seed, re-plant, or re-establish vegetation per original plans.
• Inspect monthly.
• Maintenance when needed.

Overgrown vegetation Mow or trim as appropriate. • Inspect monthly. • Maintenance when needed.
2/3 of mulch has decomposed, or mulch has been
removed
Remove decomposed fraction and top off with fresh
mulch to a total depth of 3 inches.
• Inspect monthly.
• Replenish mulch annually, or more frequently when
needed based on inspection.
*“25% full” is defined as ¼ of the depth from the design bottom elevation to the crest of the outflow structure (e.g., if the height to the outflow opening is 12 inches from the bottom elevation, then the materials must be removed when there is 3 inches of accumulation – this should be marked on the outflow structure).

BF-1 Page 3 of 11
January 12, 2017
BF-1
Biofiltration
SUMMARY OF STANDARD INSPECTION AND MAINTENANCE FOR BF-1 BIOFILTRATION (Continued from previous page) Threshold/Indicator Maintenance Action Typical Maintenance Frequency Erosion due to concentrated irrigation flow Repair/re-seed/re-plant eroded areas and adjust the irrigation system.
• Inspect monthly.
• Maintenance when needed.

Erosion due to concentrated storm water runoff flow Repair/re-seed/re-plant eroded areas, and make appropriate corrective measures such as adding erosion
control blankets, adding stone at flow entry points, or minor re -grading to restore proper drainage ac cording to the original plan. If the issue is not corrected by
restoring the BMP to the original plan and grade, the
[City Engineer] shall be contacted prior to any additional repairs or reconstruction.
• Inspect after every 0.5 -inch or larger storm event. I f erosion due to storm water flow has been observed,
increase inspection frequency to after every 0.1 -inch
or larger storm event.
• Maintenance when needed. If the issue is not
corrected by restoring the BMP to the original plan
and grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction.

Standing water in BMP for longer than 24 hours
following a storm event
Surface ponding longer than approximately 24 hours
following a storm event may be detrimental to
vegetation health
Make appropriate corrective measures such as adjusting
irrigation system, removing obstructions of debris or
invasive vegetation, clearing underdrains, or
repairing/replacing clogged or compacted soils.
• Inspect monthly and after every 0.5 -inch o r larger
storm event. If standing water is observed, increase
inspection frequency to after every 0.1 -inch or larger storm event.
• Maintenance when needed.

Presence of mosquitos/larvae

For images of egg rafts, larva, pupa, and adult
mosquitos, see
http://www.mosquito.org/biology

If mosquitos/larvae are observed: first, immediately
remove any standing water by dispers ing to nearby
landscaping; second, make corrective measures as
applicable to restore BMP drainage to prevent standing water.

If mosquitos persist following corrective measures to
remove standing water, or if the BMP design does not
meet the 96 -hour drawdown criteria due to release
rates controlled by an orifice installed on the
underdrain, the [City Engineer] shall be contacted to
determine a solution. A different BMP type, or a Vector Management Plan prepared with concurrence from the
County of San Diego Department of Environmental
Health, may be required.
• Inspect monthly and after every 0.5 -inch or larger
storm event. If mosquitos are observed, increase
inspection frequency to after every 0.1 -inch or larger storm event.
• Maintenance when needed.

Underdrain clogged Clear blockage. • Inspect if standing water is observed for longer than 24-96 hours following a storm event.
• Maintenance when needed.

BF-1 Page 4 of 11
January 12, 2017
BF-1
Biofiltration
References
American Mosquito Control Association.
http://www.mosquito.org/
California Storm Water Quality Association (CASQA). 2003. Municipal BMP Handbook. https://www.casqa.org/resources/bmp-handbooks/municipal-bmp-handbook County of San Diego. 2014. Low Impact Development Handbook. http://www.sandiegocounty.gov/content/sdc/dpw/watersheds/susmp/lid.html San Diego County Copermittees. 2016. Model BMP Design Manual, Appendix E, Fact Sheet BF-1. http://www.projectcleanwater.org/index.php?option=com_content&view=article&id=250&Itemid=220

BF-1 Page 5 of 11
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Page Intentionally Blank for Double-Sided Printing

BF-1 Page 6 of 11
January 12, 2017
BF-1
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Date: Inspector: BMP ID No.:

Permit No.: APN(s):

Property / Development Name:

Responsible Party Name and Phone Number:

Property Address of BMP:

Responsible Party Address:

INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 1 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Accumulation of sediment, litter, or debris
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Remove and properly dispose of
accumulated materials, without damage
to the vegetation
☐ If sediment, litter, or debris accumulation
exceeds 25% of the surface ponding
volume within one month (25% full*),
add a forebay or other pre-treatment
measures within the tributary area
draining to the BMP to intercept the
materials.
☐ Other / Comments:

Poor vegetation establishment
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Re-seed, re-plant, or re-establish
vegetation per original plans
☐ Other / Comments:

*“25% full” is defined as ¼ of the depth from the design bottom elevation to the crest of the outflow structure (e.g., if the height to the outflow opening is 12 inches from the bottom elevation, then the materials must be removed when there is 3 inches of accumulation – this should be marked on the outflow structure).

BF-1 Page 7 of 11
January 12, 2017
I I
I
BF-1
Biofiltration
Date: Inspector: BMP ID No.:

Permit No.: APN(s):

INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 2 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Dead or diseased vegetation
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Remove dead or diseased vegetation, re-
seed, re-plant, or re-establish vegetation
per original plans
☐ Other / Comments:

Overgrown vegetation
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Mow or trim as appropriate
☐ Other / Comments:

2/3 of mulch has decomposed, or mulch has
been removed
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Remove decomposed fraction and top off
with fresh mulch to a total depth of 3
inches
☐ Other / Comments:

BF-1 Page 8 of 11
January 12, 2017
BF-1
Biofiltration
Date: Inspector: BMP ID No.:

Permit No.: APN(s):

INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 3 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Erosion due to concentrated irrigation flow
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Repair/re-seed/re-plant eroded areas and
adjust the irrigation system
☐ Other / Comments:

Erosion due to concentrated storm water runoff
flow
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Repair/re-seed/re-plant eroded areas,
and make appropriate corrective
measures such as adding erosion
control blankets, adding stone at flow
entry points, or minor re-grading to
restore proper drainage according to
the original plan
☐ If the issue is not corrected by restoring
the BMP to the original plan and grade,
the [City Engineer] shall be contacted
prior to any additional repairs or
reconstruction
☐ Other / Comments:

BF-1 Page 9 of 11
January 12, 2017
BF-1
Biofiltration
Date: Inspector: BMP ID No.:

Permit No.: APN(s):

INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 4 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Obstructed inlet or outlet structure
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Clear blockage
☐ Other / Comments:

Underdrain clogged (inspect underdrain if
standing water is observed for longer than 24-96
hours following a storm event)
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Clear blockage
☐ Other / Comments:

Damage to structural components such as weirs,
inlet or outlet structures
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Repair or replace as applicable
☐ Other / Comments:

BF-1 Page 10 of 11
January 12, 2017
BF-1
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Date: Inspector: BMP ID No.:

Permit No.: APN(s):

INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 5 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Standing water in BMP for longer than 24 -96
hours following a storm event*
Surface ponding longer than approximately 24
hours following a storm event may be
detrimental to vegetation health
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Make appropriate corrective measures
such as adjusting irrigation system,
removing obstructions of debris or
invasive vegetation, clearing
underdrains, or repairing/replacing
clogged or compacted soils
☐ Other / Comments:

Presence of mosquitos/larvae

For images of egg rafts, larva, pupa, and adult
mosquitos, see
http://www.mosquito.org/biology

Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Apply corrective measures to remove
standing water in BMP when standing
water occurs for longer than 24-96
hours following a storm event.**
☐ Other / Comments:

*Surface ponding longer than approximately 24 hours following a storm event may be detrimental to vegetation health, and surface ponding longer than approximately 96 hours following a storm event poses a risk of vector (mosquito) breeding. Poor drainage can result from clogging of the media layer , filter course, aggregate storage layer, underdrain, or outlet structure. The specific cause of the drainage issue must be determined and corrected. **If mosquitos persist following corrective measures to remove standing water, or if the BMP design does not meet the 96 -hour drawdown criteria due to release rates controlled by an orifice installed on the underdrain, the [City Engineer] shall be contacted to determine a solution. A different BMP type, or a Vector Management Plan prepared with concurrence from the County of San Diego Department of Environmental Health, may be required.

BF-1 Page 11 of 11
January 12, 2017
BF-1
Biofiltration
Date: Inspector: BMP ID No.:

Permit No.: APN(s):

Property / Development Name:

Responsible Party Name and Phone Number:

Property Address of BMP:

Responsible Party Address:

Poor vegetation establishment
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Re-seed, re-plant, or re-establish
vegetation per original plans
☐ Other / Comments:

BF-1 Page 7 of 11
January 12, 2017
I I
I
BF-1
Biofiltration
Date: Inspector: BMP ID No.:

Permit No.: APN(s):

☐ Remove dead or diseased vegetation, re-
seed, re-plant, or re-establish vegetation
per original plans
☐ Other / Comments:

Overgrown vegetation
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Mow or trim as appropriate
☐ Other / Comments:

2/3 of mulch has decomposed, or mulch has
been removed
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Remove decomposed fraction and top off
with fresh mulch to a total depth of 3
inches
☐ Other / Comments:

BF-1 Page 8 of 11
January 12, 2017
BF-1
Biofiltration
Date: Inspector: BMP ID No.:

Permit No.: APN(s):

☐ Repair/re-seed/re-plant eroded areas and
adjust the irrigation system
☐ Other / Comments:

Erosion due to concentrated storm water runoff
flow
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

BF-1 Page 9 of 11
January 12, 2017
BF-1
Biofiltration
Date: Inspector: BMP ID No.:

Permit No.: APN(s):

☐ Clear blockage
☐ Other / Comments:

Underdrain clogged (inspect underdrain if
standing water is observed for longer than 24-96
hours following a storm event)
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Clear blockage
☐ Other / Comments:

Damage to structural components such as weirs,
inlet or outlet structures
Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Repair or replace as applicable
☐ Other / Comments:

BF-1 Page 10 of 11
January 12, 2017
BF-1
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Date: Inspector: BMP ID No.:

Permit No.: APN(s):

Presence of mosquitos/larvae

For images of egg rafts, larva, pupa, and adult
mosquitos, see
http://www.mosquito.org/biology

Maintenance Needed?
☐ YES
☐ NO
☐ N/A

☐ Apply corrective measures to remove
standing water in BMP when standing
water occurs for longer than 24-96
hours following a storm event.**
☐ Other / Comments:

BF-1 Page 11 of 11
January 12, 2017
Appendix E: BMP Design Fact Sheets

E-4 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP Must Consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List in Table
and Narrative
4 Operational BMPs—Include in
Table and Narrative
A. Onsite storm d rain
inlets
No t Applicable

Locations of inlets. Mark all inlets with the words “No Dumping! Flows to Bay” or similar.

See stencil template provided in
Appendix I-4
Maintain and periodically repaint
or replace inlet markings.

Provide storm water pollution
prevention information to new
site owners, lessees, or operators.

See applicable operational BMPs
in Fact Sheet SC -44, “Drainage
System Maintenance,” in the
CASQA Storm Water Quality
Handbooks at
www.casqa.org/resources/bmp-
handbooks/municipal-bmp-
handbook.

Include the following in lease
agreements: “Tenant shall not
allow anyone to discharge
anything to storm drains or to
store or deposit materials so as to
create a potential discharge to
storm drains.”

Appendix E: BMP Design Fact Sheets

E-5 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List in Table
and Narrative
4 Operational BMPs—Include in
Table and Narrative
B. Interior floor
drains and elevator
shaft sump pumps
Not Applicable
State that interior floor drains and
elevator shaft sump pumps will be
plumbed to sanitary sewer.

Inspect and maintain drains to
prevent blockages and overflow.

C. Interior parking
garages
Not Applicable
State that parking garage floor
drains will be plumbed to the
sanitary sewer.

Inspect and maintain drains to
prevent blockages and overflow.

D1. Need for future
indoor & structural
pest control
Not Applicable
Note building design features that
discourage entry of pests.

Provide Integrated Pest
Management information to
owners, lessees, and operators.

Appendix E: BMP Design Fact Sheets

E-6 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List in Table and
Narrative
4 Operational BMPs—Include in
Table and Narrative
D2. Landscape/
Outdoor Pesticide
Use
Not Applicable

Show locat ions of existing
trees or areas of shrubs and
ground cover to be
undisturbed and retained.

Show self -retaining landscape
areas, if any.

Show storm water treatment
facilities.

State that final landscape plans will
accomplish all of the following.

Preserve existing drought tolerant
trees, shrubs, and ground cover to the
maximum extent possible.

Design landscaping to minimize
irrigation and runoff, to promote
surface infiltration where appropriate,
and to minimize the use of fertilizers
and pestici des that can contribute to
storm water pollution.

Where landscaped areas are used to
retain or detain storm water , specify
plants that are tolerant of periodic
saturated soil conditions.

Consider using pest -resistant plants,
especially adjacent to hardscape.

To ensure successful establishment,
select plants appropriate to site soils,
slopes, climate, sun, wind, rain, land
use, air movement, ecological
consistency, and plant interactions.

Maintain landscaping using
minimum or no pesticides.

See applicable operational
BMPs in Fact Sheet SC -41,
“Building and Grounds
Maintenance,” in the CASQA
Storm Water Quality
Handbooks at
www.casqa.org/resources/bmp
-handbooks/municipal-bmp-
handbook.

Provide IPM information to
new owners, lessees and
operators.

Appendix E: BMP Design Fact Sheets

E-7 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List in Table
and Narrative
4 Operational BMPs—Include
in
Table and Narrative
E. Pools, spas,
ponds, decorative
fountains, and other
water features.

Not Applicable
Show location of water feature
and a sanitary sewer cleanout in
an accessible area within 10 feet.

If the local municipality requires
pools to be plumbed to the sanitary
sewer, place a note on the plans and
state in the narrative that this
connection will be made according to
local requirements.

See applicable oper ational
BMPs in Fact Sheet SC -72,
“Fountain and Pool
Maintenance,” in the CASQA
Storm Water Quality
Handbooks at
www.casqa.org/resources/bm
p-handbooks/municipal-
bmp-handbook.

F. Food service
Not Applicable
For restaurants, grocery stores,
and other food service
operations, show location
(indoors or in a covered area
outdoors) of a floor sink or other
area for cleaning floor mats,
containers, and equipment.

On the drawing, show a note that
this drain will be connected to a
grease interceptor before
discharging to the sanitary sewer.

Describe the location and features of
the designated cleaning area.

Describe the items to be cleaned in
this facility and how it has been sized
to ensure that the largest items can be
accommodated.

Appendix E: BMP Design Fact Sheets

E-8 February 26, 2016
If These Sources Will
Be on the Project Site
… … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources
of

2 Permanent Controls—Show
on Drawings
3 Permanent Controls—List
in Table and Narrative
4 Operational BMPs—Include in
Table and Narrative
G. Refuse areas
Not Applicable
Show where site refuse and
recycled materials will be
handled and stored for
pickup. See local municipal
requirements for sizes and
other details of refuse areas.

If dumpsters or other
receptacles are outdoors,
show how the designated
area will be covered, graded,
and paved to prevent run-
on and show locations of
berms to prevent runoff
from the area. Also show
how the designated area will
be protected from wind
dispersal.

Any drains from dumpsters,
compactors, and tallow bin
areas must be connected to
a grease removal device
before discharge to sanitary
sewer.

State how site refuse will
be handled and provide
supporting detail to what
is shown on plans.

State that signs will be
posted on or near
dumpsters with the
words “Do not dump
hazardous materials
here” or similar.

State how the following will be implemented:

Provide adequate number of receptacles. Inspect
receptacles regularly; repair or replace leaky
receptacles. Keep receptacles covered.

Prohibit/prevent dumping of liquid or hazardous
wastes. Post “no hazardous materials” signs. Inspect
and pick up litter daily and clean up spills
immediately. Keep spill control materials available
on- site. See Fact Sheet SC-34, “Waste Handling and
Disposal” in the CASQA Storm Water Quality
Handbooks at www.casqa.org/resources/bmp-
handbooks/municipal-bmp-handbook.

Appendix E: BMP Design Fact Sheets

E-9 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List in Table and
Narrative
4 Operational BMPs—Include
in Table and Narrative
Table and Narrative
H. Industrial
processes.

Not Applicable
Show process area. If industrial processes are to be located onsite, state: “All process activities to be
performed indoors. No processes to
drain to exterior or to storm drain
system.”
See Fact Sheet SC -10, “Non -
Storm Water Discharges” in
the CASQA Storm Water
Quality Handbooks at
https://www.casqa.org/resou
rces/bmp-handbooks.

I. Outdoor storage
of equipment or
materials. (See rows J
and K for source
control measures for
vehicle cleaning,
repair, and
maintenance.)
Not Applicable
Show any outdoor storage
areas, including how materials
will be covered. Show how
areas will be graded and
bermed to prevent run -on or
runoff from area and
protected from wind dispersal.

Storage of non- hazardous
liquids must be covered by a
roof and/or drain to the
sanitary sewer system, and be
contained by berms, dikes,
liners, or vaults.

Storage of hazardous materials
and wastes must be in
compliance with the local
hazardous materials ordinance
and a Hazardous Materials
Management Plan for the site.

Include a detailed description of
materials to be stored, storage areas, and
structural features to prevent pollutants
from entering storm drains.

Where appropriate, r eference
documentation of compliance with the
requirements of local Hazardous
Materials Programs for:
 Hazardous Waste Generation
 Hazardous Materials Release
Response and Inventory
 California Accidental Release
Prevention Program
 Aboveground Storage Tank
 Uniform Fire Code Article 80
Section 103(b) & (c) 1991
 Underground Storage Tank
See the Fact Sheets SC -31,
“Outdoor Liquid Container
Storage” and SC -33,
“Outdoor Storage of Raw
Materials” in the CASQA
Storm Water Quality
Handbooks at
www.casqa.org/resources/bm
p-handbooks/municipal-bmp-
handbook.

Appendix E: BMP Design Fact Sheets

E-10 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on Drawings
3 Permanent Controls—List in
Table and Narrative
4 Operational BMPs—Include in
Table and Narrative
J. Vehicle and
Equipment Cleaning
Not Applicable
Show on drawings as appropriate:

(1) Commercial/industrial facilities having
vehicle /equipment cleaning needs must
either provide a covered, bermed area for
washing activities or discourage
vehicle/equipment washing by removing
hose bibs and installing signs prohibiting such
uses.
(2) Multi -dwelling complexes must have a
paved, bermed, and covered car wash area
(unless car washing is prohibited onsite and
hoses are provided with an automatic shut -
off to discourage such use).
(3) Washing areas for cars, vehicles, and
equipment must be paved, designed to
prevent run- on to or runoff from the area,
and plumbed to drain to the sanitary sewer.
(4) Commercial car wash facilities must be
designed such that no runoff from the facility
is discharged to the storm drain system.

Wastewater from the facility must discharge
to the sanitary sewer, or a wastewater
reclamation system must be installed.

If a car wash area is not
provided, describe measures
taken to discourage on site
car washing and explain how
these will be enforced.

Describe operational measures to
implement the following (if
applicable):

Washwater from vehicle and
equipment washing operations
must not be discharged to the
storm drain system.

Car dealerships and similar
may rinse cars with water
only.

See Fact Sheet SC -21,
“Vehicle and Equipment
Cleaning,” in the CASQA
Storm Water Quality
Handbooks at
www.casqa.org/resources/bm
p-handbooks/municipal-bmp-
handbook.

Appendix E: BMP Design Fact Sheets

E-11 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List in
Table and Narrative
4 Operational BMPs—Include in
Table and Narrative
K.

Vehicle/Equipment
Repair and
Maintenance
Not Applicable
Accommodate all vehicle
equipment repair and
maintenance indoors. Or
designate an outdoor work area
and design the area to protect
from rainfall, run -on runoff, and
wind dispersal.

Show secondary containment for
exterior work areas where motor
oil, brake fluid, gasoline, diesel
fuel, radiator fluid, acid -
containing batteries or other
hazardous materials or hazardous
wastes are used or stored. Drains
must not be installed within the
secondary containment areas.

Add a note on the plans that
states either (1) there are no floor
drains, or (2) floor drains are
connected to wastewater
pretreatment systems prior to
discharge to the sanitary sewer
and an industrial waste discharge
permit will be obtained.

State that no vehicle repair or
maintenance will be done
outdoors, or else describe the
required features of the
outdoor work area.

State that there are no floor
drains or if there are floor
drains, note the agency from
which an industrial waste
discharge perm it will be
obtained and that the design
meets that agency’s
requirements.

State that there are no tanks,
containers or sinks to be used
for parts cleaning or rinsing
or, if there are, note the
agency from which an
industrial waste discharge
permit will be obtained and
that the design meets that
agency’s requirements.

In the report, note that all of the following
restrictions apply to use the site:

No person must dispose of, nor permit
the disposal, directly or indirectly of
vehicle fluids, hazardous m aterials, or
rinsewater from parts cleaning into
storm drains.

No vehicle fluid removal must be
performed outside a building, nor on
asphalt or ground surfaces, whether
inside or outside a building, except in
such a manner as to ensure that any
spilled fluid will be in an area of
secondary containment. Leaking
vehicle fluids must be contained or
drained from the vehicle immediately.

No person must leave unattended drip
parts or other open containers
containing vehicle fluid, unless such
containers are in use or in an area of
secondary containment.

Appendix E: BMP Design Fact Sheets

E-12 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List
in Table and Narrative
4 Operational BMPs—Include in
Table and Narrative
L. Fuel Dispensing
Areas
Not Applicable
Fueling areas 16 must have
impermeable floors (i.e., portland
cement concrete or equivalent smooth
impervious surface) that are (1) graded
at the minimum slope necessary to
prevent ponding; and (2) separated
from the rest of the site by a grade
break that prevents run- on of storm
water to the MEP.

Fueling areas must be covered by a
canopy that extends a minimum of ten
feet in each direction from each
pump. [Alternative: The fueling area
must be covered and th e cover’s
minimum dimensions must be equal
to or greater than the area within the
grade break or fuel dispensing area1.]
The canopy [or cover] must not drain
onto the fueling area.

The property owner must dry sweep
the fueling area routinely.

See t he Business Guide Sheet,
“Automotive Service —Service
Stations” in the CASQA Storm
Water Quality Handbooks at
https://www.casqa.org/resources/b
mp-handbooks.

16 The fueling area must be defined as the area extending a minimum of 6.5 feet from the corner of each fuel dispenser or the length at which the hose and nozzle assembly may be operated plus a minimum of one foot, whichever is greater.

Appendix E: BMP Design Fact Sheets

E-13 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent
Controls—List in

4 Operational BMPs—Include in
Table and Narrative
M. Loading Docks
Not Applicable
Show a preliminary design for the
loading dock area, including
roofing and drainage. Loading
docks must be covered and/or
graded to minimize run- on to and
runoff from the loading area. Roof
downspouts must be positioned to
direct storm water away from the
loading area. Water from loading
dock areas should be drained to
the sanitary sewer where feasible.

Direct connections to storm
drains from depressed loading
docks are prohibited.

Loading dock areas draining
directly to th e sanitary sewer must
be equipped with a spill control
valve or equivalent device, which
must be kept closed during
periods of operation.

Provide a roof overhang over the
loading area or install door skirts
(cowling) at each bay that enclose
the end of the trailer.

Move loaded and unloaded items indoors as
soon as possible.

See Fact Sheet SC -30, “Outdoor Loading and
Unloading,” in the CASQA Storm Water
Quality Handbooks at
www.casqa.org/resources/bmp-
handbooks/municipal-bmp-handbook.

Appendix E: BMP Design Fact Sheets

E-14 February 26, 2016
If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—
Show on Drawings
3 Permanent Controls—List in Table and
Narrative
4 Operational BMPs—Include in
Table and Narrative
N. Fire Sprinkler
Test Water
No t Applicable
Provide a means to drain fire sprinkler test water
to the sanitary sewer.

See the note in Fact Sheet SC -
41, “Building and Grounds
Maintenance,” in the CASQA
Storm Water Quality
Handbooks at
www.casqa.org/resources/bm
p-handbooks/municipal-bmp-
handbook
O. Miscellaneous Drain
or Wash Water
Boiler drain lines
Condensate drain
lines
Rooftop
equipment
Drainage sumps
Roofing, gutters,
and trim
No
t Applicable
Boiler drain lines must be directly or indirectly
connected to the sanitary sewer system and may
not discharge to the storm drain system.

Condensate drain lines may discharge to
landscaped areas if t he flow is small enough that
runoff will not occur. Condensate drain lines
may not discharge to the storm drain system.

Rooftop mounted equipment with potential to
produce pollutants must be roofed and/or have
secondary containment.

Any drainage sumps onsite must feature a
sediment sump to reduce the quantity of
sediment in pumped water.

Avoid roofing, gutters, and trim made of copper
or other unprotected metals that may leach into
runoff.

Appendix E: BMP Design Fact Sheets

E-15 February 26, 2016

If These Sources Will Be
on the Project Site … … Then Your SWQMP must consider These Source Control BMPs 1 Potential Sources of
Runoff Pollutants
2 Permanent Controls—Show on
Drawings
3 Permanent Controls—List in
Table and Narrative
4 Operational BMPs—Include in
Table and Narrative
P. Plazas,
sidewalks, an d
parking lots.

Not Applicable
Plazas, sidewalks, and parking lots must
be swept regularly to prevent the
accumulation of litter and debris.

Debris from pressure washing must be
collected to prevent entry into the
storm drain system. Washwater
containing any cleaning agent or
degreaser must be collected and
discharged to the sanitary sewer and
not discharged to a storm drain.

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
Use this checklist to ensure the required information has been included in the Structural BMP Maintenance Information Attachment:

 Preliminary Design / Planning / CEQA level submittal:

Attachment 3a must identify:

 Typical maintenance indicators and actions for proposed structural BMP(s) based on Section 7.7 of the BMP Design Manual

Attachment 3b is not required for preliminary design / planning / CEQA level submittal.

 I Final Design level submittal:

Attachment 3a must identify:

 Specific maintenance indicators and actions for proposed structural BMP(s). This shall be based on Section 7.7 of the BMP Design Manual and enhanced to reflect actual proposed components of the structural BMP(s)
 I How to access the structural BMP(s) to inspect and perform maintenance  I Features that are provided to facilitate inspection (e.g., observation ports, cleanouts, silt posts, or other features that allow the inspector to view necessary components of the structural BMP and compare to maintenance thresholds)
 Manufacturer and part number for proprietary parts of structural BMP(s) when applicable  Maintenance thresholds specific to the structural BMP(s), with a location-specific frame of reference (e.g., level of accumulated materials that triggers removal of the materials, to be identified based on viewing marks on silt posts or measured with a survey rod with respect to a fixed benchmark within the BMP)
 Recommended equipment to perform maintenance
 When applicable, necessary special training or certification requirements for inspection and maintenance personnel such as confined space entry or hazardous waste management

Attachment 3b: For private entity operation and maintenance, Attachment 3b shall include a draft maintenance agreement in the local jurisdiction's standard format (PDP applicant to contact the [City Engineer] to obtain the current maintenance agreement forms).

City of San Marcos PDP SWQMP Template Date: March 15, 2016 PDP SWQMP Preparation Date: 10/6/2022
ATTACHMENT 4
Copy of Plan Sheets Showing Permanent Storm Water BMPs

This is the cover sheet for Attachment 4.

Use this checklist to ensure the required information has been included on the plans:

The plans must identify:

 Structural BMP(s) with ID numbers matching Form I-6 Summary of PDP Structural BMPs  The grading and drainage design shown on the plans must be consistent with the delineation of DMAs shown on the DMA exhibit
 Details and specifications for construction of structural BMP(s)  Signage indicating the location and boundary of structural BMP(s) as required by the City Engineer  How to access the structural BMP(s) to inspect and perform maintenance  Features that are provided to facilitate inspection (e.g., observation ports, cleanouts, silt posts, or other features that allow the inspector to view necessary components of the structural BMP and compare to maintenance thresholds)
 Manufacturer and part number for proprietary parts of structural BMP(s) when applicable  Maintenance thresholds specific to the structural BMP(s), with a location-specific frame of reference (e.g., level of accumulated materials that triggers removal of the materials, to be identified based on viewing marks on silt posts or measured with a survey rod with respect to a fixed benchmark within the BMP)
 Recommended equipment to perform maintenance
 When applicable, necessary special training or certification requirements for inspection and maintenance personnel such as confined space entry or hazardous waste management  Include landscaping plan sheets showing vegetation requirements for vegetated structural BMP(s)  All BMPs must be fully dimensioned on the plans
 When proprietary BMPs are used, site-specific cross section with outflow, inflow, and model number shall be provided. Photocopies of general brochures are not acceptable.

CAPALINA RD
W. MISSION RD

INLAND RAIL TRAIL
APN 219-115-35
APN 219-115-30
APN 219-115-33
LOT 1
BLDG 1
BLDG 2

REC AREA
Δ
Δ
RW
RW
PL PL
PL
PL
PL
RW
RW
RW
RW
RW
RW
K
K
L
L RW
J
J
2%
2%

CAPALINA APARTMENTS
APN 219-115-33

CAPALINA ROAD, SAN MARCOS CA
TITLE

AT SAN MARCOS

CAPALINA APARTMENTS
Feet
0 30 60
SCALE 1":30'

PRELIMINARY GRADING PLAN
<
X
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SHEET INOEX
SHEET 1
SHEET 2
SHEET 3
SHEET 4
SHEET 5
SHEET 6
SHEET 7
TITLE

EXISTING CONDITION

GRADING

SECTIONS AND PROFILES

UTILITIES

CIRCULATION

SWQMP BMP
/
/
/
I
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I
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/
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/
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LINE ID
1 2
3 4
5 6
7 8
9 10
11 12
13 ....
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/ () .Jr'.: ,ii Ai'.-V
ill;/) 1//
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ir-x,sr c '------
S/ODf4L/<
/OC)'

VICINITY /,IAP
~ ~lg~

NOT TO SCALE
/!J.00' JC.OC'
CAPAUNA ROAO Slli'EET
SECllON (TrPICAL)
SECllON J-J
.94 ()()'
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4. (J'O'
NOT 10 SCALE
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SECllON K-K
W NISS/ON ROAO Slli'EET SECllON
NOT 10 SCALE

25. (){)'
SECllON L-L
-
-
W NISS/ON ROAO Slli'EET SECllON

NOT TO SCALE

EARTHWORK CALCULATION TABLE

ITEM DESCRIPTION AREA (SF) SECTION/LENGTH (FT) VOL(CY) ROUNDED RAW CUT 522.18 530.00
MAIN DRIVEWAY & PARKING 61,540.00 0.75 1,709.44 1,710.00 PUBLIC ST 4,955.00 0.83 152.93 160.00
BLDG FLOOR SECTION 34,575.00 0.75 960.42 970.00
WQBASINS 2,550.00 5.00 472.22 480.00
DETENTION PIPES (4' DIA PIPE, 550 LF) 12.57 370.00 172.21 180.00 TOTAL CUT 3,989.40 4,030.00
RAW FILL 12,266.55 12,270.00
SHRINKAGE 0% (APPLIED TO RAW CUT) 522.18 0.00 0.00 0.00 TOTAL FILL 12,266.55 12,270.00
IMPORT -8,277.15 -8,240.00
FOR PERMITTING PURPOSES, IMPORTAT(CY) 8,240.00
LEGAL OESCR/PTION FOR APN 219-115-JJ-00
PARCEL 2 OF PARCEL MAP NO. 2003, IN TI,E cnY OF SAN MARCOS, COUNTY OF SAN

DIEGO, STATE OF CAUFORNIA, PER MAP FILED IN THE OFFICE OF TI,E COUNTY RECORDER OF SAN DIEGO COUNTY, OCTOBER 23, 1973 AS FILE NO. 73-296977 OF OFFICIAL RECORDS.

EXCEPTING THEREFROM ALL THAT PORTION CONNECTED TO THE CITY OF SAN MARCOS FOR STREET PURPOSES, RECORDED MARCH 19, 2004 AS FILE NO. 2004-0229021 OF OFFICIAL RECORDS.

SOURCE OF TOPOGRAPHY
THE TOPOGRAPHY SHOWN ON 11,IS SURVEY WAS CREATED FROM AN AERIAL DRONE SURVEY BY CAPTO DRONE SERVICES, FUGHT DATE: JULY 6, 2022.

BASIS OF BEARINGS
THE BASIS OF BEARINGS FOR 11,IS SURVEY IS TI,E CALIFORNIA COORDINATE SYSTEM 1983 (CCS83), ZONE 6, 2017.50 EPOCH, AND IS DETERMINED BY GPS MEASUREMENTS TAKEN ON JUNE 28, 2022 AT CITY OF SAN MARCOS SURVEY CONTROL POINT STATION NAMES "CP-018" AND "CP-022" DERIVED FROM GEODETIC VALUES PUBLISHED RECORD PER ROS 23731.

THE BEARING BETWEEN "CP-018" AND "CP-022": NORTI, BT 1 O' 38" WEST

QUOTED BEARINGS FROM REFERENCE MAPS OR DEEDS MAY OR MAY NOT BE IN TERMS OF SAID SYSTEM.

THE COMBINED FACTOR AT "CP-022": 0.99995935
GRID DISTANCE = GROUND DISTANCE x COMBINED GRID FACTOR.

ELEVATION AT "CP-022': 584.17 DATUM: NAVDBB
ALL DIMENSIONS SHOWN HEREON ARE GROUND DISTANCES, UNLESS NOTED OTHERWISE.

BENCHAIARK
THE BENCHMARK FOR 11,IS SURVEY IS TI,E CITY OF SAN MARCOS SURVEY CONTROL POINT STATION NAME: "CP-022", LOCATED IN THE CENTER MEDIAN OF RANCHO SANTA FE ROAD, APPROXIMATELY 150' SOUTHWESTERLY OF TI,E INTERSECTION OF RANCHO SANTA FE ROAD AND DESCANSO AVE, RECORD PER ROS 23731.

ELEVATION: 584.17 DATUM: NAVD88

EXISTING EASEMENTS
SEE SHEET 2 FOR DESCRIPTIONS & LOCATIONS.

PROPERTY AOORESS

CAPALINA ROAD
SAN MARCOS, CA 92069

PROPOSEO ZONING
MIXED-USE-2 (MU-2)
LOT.S
TOTAL LOT(S) EXISTING:

TOTAL LOT(S) PROPOSED:

UTILITIES
FIRE
SCHOOL
SEWER
WATER

TELEPHONE
GAS

ELECTRIC

SAN MARCOS FIRE PROTECTION DISTRICT

SAN MARCOS UNIFIED SCHOOL DISTRICT

VALLECITOS WATER DISTRICT

COX COMMUNICATIONS

SAN DIEGO GAS & ELECTRIC

PROPOSEO ONSITE UTILITIES
WATER

FIRE SYSTEM
SEWER

STORM DRAIN

PRIVATE

ORY UTILITY NOTE

AS THIS PROJECT IS IN THE ENTITLEMENT STAGE, TIHERE IS CURRENTLY NO PLANS & DESIGN FOR THE DRY UTILITIES. TIHE EXISTING DRY

UTILITIES ALONG THE RIGHT OF WAY SHALL BE RELOCATED OR ADJUSTED AS NEEDED TO AVOID CONFLICT WITH ADA ACCESSIBILITY. DESIGN & LOCATIONS SHALL BE SHOWN ON THE CONSTRUCTION DOCUMENTS. THE RELOCATION MAY INCLUDE THE GRANTING OF ON-SITE EASEMENTS.

OESIGN EXCEPTION NOTE

AS SHOWN HEREON, THIS PROJECT INCLUDES DESIGN EXCEPTION FOR DRIVEWAY DISTANCE/LOCATION.

OEVELOPER / APPLICANT

CAPALINA SMA, LLC
179 CALLE MAGDALENA #201
ENCINITAS, CA 92024
ATTN: JON RILLING
OWNER's CERTIRCATE

WE HEREBY CERTIFY THAT WE ARE THE RECORD OWNERS OF TI,E

PROPERTY SHOWN ON THE ATTACHED PRELIMINARY GRADING PLAN AND TIHAT SAID MAP SHOWS OUR ENTIRE CONTIGUOUS OWNERSHIP.

WE UNDERSTAND THAT PROPERTY IS CONSIDERED CONTIGUOUS

EVEN IF IT IS SEPARATED BY ROADS, STREETS UTIUTY EASEMENTS OR RAILROAD RIGHT OF WAY.

APPLICANT /AGENT FOR OWNERS OAT£
SEE AGREEMENT OOC. NO.~========
OATllJ:

OWNER

SABA FAMILY TIRUST

MAP PREPAREO BY

EXCEL ENGINEERING
440 STATE PLACE
ESCONDIDO, CA 92029
(760)745-8118

PREPARATION OATE
OCTOBER 2022

LANO AREA

2.51 ACRES
APN
APN 219-115-33

FLOOO ZONE OES/GNATION
DATE: 04-6-2023
DATE: 4/6/2023
FLOOD ZONE INFORMATION PER THE FlEDERAL EMERGENCY
MANAGEMENT AGENCY WEBSITE.

TIHIS SITE IS PART OF FlEMA FLOOD PANEL NO. 06073C0789H AND WAS REVISED: MAY 16, 2012

TIHE PROPERTY IS LOCATED WITIHIN ZONE X - AREA DETERMINED TO BE OF MINIMAL FLOOD HAZARD.

SHEET 1 OF 7 SHEETS
EXCEL PRELIMINARY GRADING Pl.AN

DATE REMARKS
Ol/2023 PLANNING stJB41/TTAL ENGINEERING
WfJ /fNl/fNC•INllEElltC•fJS>!JJl'Clllt(;
#IISTA1£~ ~ ~ 112119
'':::.: 1,. __________________________________________________________________________________________________ .,;._;.iiiiiiiiiiiiii..,;;iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii.;. __ ,.,.;{lliO/Jlf-Bl..;.,_m•";,.{lliO/Jlf-Bl,;,_•"--.&-------------------------.I

CAPALINA RD
W. MISSION RD
APN 219-115-35
APN 219-115-30
APN 219-115-33

PROJECT SITE
Δ
Δ
RW

RWRW RW RW
RWRWRW
PL PL

PL PL PL
RW
RW
RW

CAPALINA APARTMENTS
APN 219-115-33

CAPALINA ROAD, SAN MARCOS CA

EXISTING CONDITION
SCALE 1":20'
Feet
0 20 40
I. . .
•.

L. r ..
, ·.•.

I;
\
\
\
\ ~ \
\
'
/ _,
/
/
/
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DATE
(}l/2023
I
\
8(JS
If/BENCH
\
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REMARKS
f!'.ANNINC S{JBAI/TTAL
I
I
I
EXCEL

ENGINEERING
llJfJ IYHIIIC•/JlllEIJIINC•f1!/>!llllflli(;
44D STA'IE ~ ~ ~ ll2D29
£%/SllNC EASEVENlS
IE-011 AN EASEMENT CRAN1El) TO SAN 0/ECO COUNTY WA!ER
A(l!HORITY FOR PIPE UNES, INGRESS &- EGRESS &
RIGHTS INCIOENTAL !HERETO R£CORl)£f) A(IGIJST 11, 1958, IN BOOK 7206, PACE 315 OF OlllCIAL RECOROS.

IE-021 AN EASEMENT CRAN1El) TO !HE CITY OF SAN A/ARCOS
FOR El,IBANKAIENT SI.OPES &- RIGHTS INCIOENTAL
!HERETO RECOROEO A/ARCH 19, 2(}(}4, AS OOC(IAIENT NQ
2()(}1-0229021 OF OlllCIAL RECl:WOS.

LEGEND

PROJECT BOUNDARY

PROPERTY LINE

RIGHT OF WAY
EXIST. MAJOR CONTOUR

EXIST MINOR CONTOUR
EXIST. GEOGRID TYPE RETAINING
EXIST. CMU TYPE RETAINING
EXIST. SOIL NAIL TYPE RETAINING
EXIST. WATER MAIN
EXIST. SEWER MAIN
EXIST. FLOW LINE
EXIST. PCC BROW DITCH
EXIST. FIRE LINE
EXIST. FIRE HYDRANT
EXIST. STREET /PARKING LIGHT
EXIST. STORM DRAIN

INLETS/CLEANOUTS
EXIST. WATER SERVICE LATERAL
EXIST. SEWER SERVICE LATERAL
EXIST. FIRE SERVICE LATERAL
EXIST. PCC CURB
EXIST. PCC CURB & GUTTER
---PL- --
---RW- --
-----100----
w
---5---
---< ..
c::::::::> c::::::::> c::::::::> =
F
-, ffl!m ~
D ® ®
C>-®-------0
HI Q)
SHEET 2 OF 7 SHEETS
PRELIMINARY GRADING Pl.AN
C'.; L.~~~-~---;;... ________________________________________________________________________________ .,.:.~--~-------.:..--l'H..;/761J)US-81,;;;,.;.;,M,;.Fl.;,/761J)US-81;;;..;,,;.~ __ .,L, _______________________ ..

CAPALINA RD
W. MISSION RD
BLDG 1
BLDG 2
POOL

WQ BASIN
Δ
RW
RW
RW
RWRWRW
PL PL

PL PL PL
RW
RW
RW
RW
APN 219-115-35
APN 219-115-30
RW
RW
SPA
2:1 MAX

WQ BASIN

CAPALINA APARTMENTS
APN 219-115-33

CAPALINA ROAD, SAN MARCOS CA

GRADING
SCALE 1":20'
Feet
0 20 40
Feet
0 5 10
SCALE 1":5
\
'\ ~
'\
'\
'\
'-
\
'\
'\
'
jj
597.71 TW S/-06
596.00 BIY
595.93 TW
595. 92 BIY S/-06
FF: 596.37
PAO: 595.62
593.37 TW
593.25 8 S/-06
£)(!ST. fll?E HmRANT TO BE
REZOCA 1EO AS SHOIW & ON A
CONCREIE PAO OU1S/OE OF lHE
NEIY PCC S/lJEIYALK.
594.37 FS
£-Of
•
I
I
/
I
\
\
• ·• ,......,.._
FF: 596.37
PAO: 595.62
596.37 FS
TC
Fl
•

5.0. 59!. 68 TW SI-06
590.23 BIY
590.56 TW
590. 42 BIY SI-06
590.24 FF
590.24 FF
586.10 BIY
I
~Qf- •
~ .

I
shi rwS/ 06 ~~ I
, JJBIY - I:,
:J.2~\ rw / j ~f
.24 BIY S/-06 ~
T"-- --l,'.-NEIY 81/S STOP PAO
PEii' NC Tl) STANOAROS. I
SEE OETAH. BEZOIY
l I I I .
i 7.5J Fl Sl-06 - fl
04 WO CROI/NO
'RFACE O~R Pli
/ t
1;
592.70 TW 592. 05 BIY S/-06 - - - - -l--__ll_~
\
-~ \I, t 1
ORY l/TIL/TY NOTE
59!. 77 TW S/-06
59!.fO BIY

5. .02
~ 5. 52
590. J5 'TW S/-06
585:86 BIY
587.13 TW S/-06
$' 586.23 BIY
•1 I
!HERE IS 6"± GRAOE
0/FFERENCE BETHEEN ENO OF
PROPOSEO S/OEIYALK &- £)(!SllNC
, GROI/NO IN !HIS AREA.

AS THIS PROJECT IS IN THE ENillLEMENT STAGE, THERE IS CURRENTLY NO PLANS & DESIGN FOR THE DRY UTILITIES. THE EXISTING DRY

5. 62 TC
JOIE
~ 7fTC
588.32 IE
iO -'~II i .
,/
/
.... ~~~~~,~----■ ···--·
589.94 TW S/-06 585.14 BIY
-~ -
59!. 7. TC.
1=--='59!.2. FS «S I
Sl-02
C .
s----
5' 1,//N

RN/SH GRAOE
Hf01H VARIES
HfOlH/2 l Hf0llft2
--- i~ =="'~==w===-~ V'~.-
4'-6' CIIAN-IYASHEO ROCK UNDERLAIN BY CEOTF)(llLE FABRIC FT.· 590.24
PAO: 589.49 "
"
•
rlt
EX/SllNC EASENENlS
590.24 FF
584.65 BIY
IE-011 AN EASEAIENT GRANTED TO SAN 0/ECO COUNTY IYA!ER
AlllHORITY flJR PIPE UNES, INGRESS &- EGRESS &
RICH!S INCIDENTAL !HERETO RECOROEO Al/Cl/ST ff, 1958,
IN BOOK 7206, PACE 315 OF OFFICIAL REawDS.

IE-021 AN EASEAIENT GRANTED TO !HE CITY OF SAN AIARa!S' FOR EAIBANKAIENT SI.OPES &- RICH!S INCIOENT.4L
590.24 FF
585.67 BIY ~ '!/4.._~PROPOSElJ

RICHT OF /YA Y
0£0/CAllON
"I,
~ --~- .•
\ _;
t
k. t
I
I
I
• •
•
I
I I
I
I
I
!HERETO RECOR!JEI) AIARCH 19, 2004, AS OOCl/AIENT NO.
2004-022902! OF OFFICIAL RECWOS. UNLESS SPEC/REll BY PLANS (1,//RAR OR E(){IIVALEN1). DATE REMARKS EXCEL
ENGINEERING AIIN Hf01H=5: 1,//N LENC1H=f0' 04/2023 /!'.ANNING S{Jlll,//TTAL SD-1O ENERGY VELOCITY DISSIPATER JMJ::::::::,;';;~
..

CONSTRUCTION NOTES

UTILITY IMPROVEMENTS
ll/T-011 FIRELINE MAIN
ll/T-021 DDCV
ll/T-aJI FIRE HYDRANT
ll/T-041 BLDG FIRE SERVICE LATERAL
ll/T-051 PIV /FDC
lllT-061 DOMESTIC WATER SERVICE LATERAL
ll/T-071 IRRIGATION WATER SERVICE LATERAL
ll/T-MI SEWER SERVICE LAlERAL (PUBLIC)
ll/T-091 SEWER MAINLINE (PRIVAlE)
ll/T-101 llLDG SEWER SERVICE LAlERAL
!l/T-ffl 8" PUBLIC WWAlER MAIN
STORM DRAIN / WAlER QUALITY IMPROVEMENTS
ISO-Ofl ::.TORM DRAIN INLET
IS0-021 STORM DRAIN PIPE
150-aJI 48"- OF SD DETENTION PIPE (SEE DETAIL
ON SHEET 7 & PROFILE ON SHEET 4).
~IS0~-~04~1 STORM DRAIN PIPE (OUTlLET)
IS0-051 WATlER QUALITY BASIN. SEE DETAILS ON
SHEET 7.
~IS0--06~1 WQ BASIN OUTLET. SEE DETAILS ON
SHEET 7.
~IS0--07=1 WQ BASIN OVERFLOW INLET .

ISO-Ml STORM DRAIN CURB OUTLET PER SDRSD D-25
IS0-091 PCC CHUlE
IS0-101 ~NERGY VELOCITY DISSIPATOR PER DETAIL THIS
SHEET
-150---,-,1 AREA DRAIN
IS0-121 4" AREA DRAIN PIPE

SURFACE IMPROVEMENTS
~ 3" AC/6.5 CLASS II BASE (DRIVE AISLE)
19-021 4" AC/7.5 CLASS II (PARKING)
IS/-aJI 6" PCC CURB (SDRSD G-2)
19-041 6" PCC CURB & GUTlER (SDRSD G-2)
19-051 PCC RAMP
19-061 CMU TYPE RETAINING WALL
19-071 PCC SIDEWALK
ISi-Mi j' WIDE CURB CUT O 9' O.C. WITH
ENERGY VELOCITY DISSIPAlER
~l.9~-09=1 ADA COMPLAINT PLANlER COVER
19-101 R=20' RADUIS TYPE DRIVEWAY PER

CITY STANDARD)
IS/-ffl AC PAVEMENT (STREET WIDENING)
~ 1.5' WIDE CURB CUT @ 20' O.C.
19-131 2" GRIND & OVERLAY PER CITY

STANDARD

FENC/NC NOTE
NOTE ON RETAINING WALL WITH FENCE ON TOP. FENCING

FINAL DESIGN PER LANDSCAPING PLAN ON THE
CONSTRUCTION DOCUMENTS.

LEGEND

PROJECT BOUNDARY

PROPERTY LINE

RIGHT OF WAY

EXIST MAJOR CONTOUR

EXIST MINOR CONTOUR

PROPOSE MAJOR CONTOUR

PROPOSE MINOR CONTOUR

GEOGRID TYPE RETAINING

CMU TYPE RETAINING

SOIL NAIL TYPE RETAINING

EXIST WATER MAIN

EXIST SEWER MAIN
NEW WAlER MAIN

NEW SEWER MAIN

FLOW LINE

PCC BROW DITCH
EXIST. FIRE LINE

FIRE HYDRANT

STREET/PARKING LIGHT

STORM DRAIN

INLETS/CLEANOUTS

WATER SERVICE LATERAL

SEWER SERVICE LATERAL

FIRE SERVICE LATERAL

PCC CURB

PCC CURB & GUTTER
-- -PL- --
---RW---
-----100----
----10,n---
w
---s---
---w---
---s---
---F---
□ [] C':::::::,
-x-•w
• '"'X'.-S'
>-<o1;-f:

SHEET 3 OF 7 SHEETS
PRELIMINARY GRADING Pl.AN
C'.: NOT TO SCALE PH /lf0/m-61M a (1f0/14HIJ4 ....._ ___________________________ .;;,;,,;.;.~;,....------------------....:..:..;;;;;;;;;;;;;;:iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii~...,;;;;;;;;,;;,,;;;;,;,;;;;;;;;,;;.;;;;_,.L.. ____________ _.

REC AREA

WQ BASIN

WQ BASIN
H
H
G
G

CAPALINA
RD W. MISSION
RD.

CAPALINA
RD
W. MISSION
RD.

APN 219-115-33
APN 219-115-30
APN 219-115-33
APN 219-115-30
APN 219-115-30
APN 219-115-33

PRIVATE SD DETENTION SYSTEM
9+95 10+00 10+50 11+00 11+50 PRIVATE SD DETENTION SYSTEM 9+95 10+00 10+50

CAPALINA APARTMENTS
APN 219-115-33

CAPALINA ROAD, SAN MARCOS CA

SECTIONS AND PROFILES
SCALE 1":40'
Feet
0 40 80

PROPOSED

BUILDING

PARKING &
IRNl.57{ flOOR DRIVE AISLE
- -I
3:
ll:'.
3::

PROPOSED w
BUILDING z
1RM'.57f flOOR
--
3:
ll:'.
>-' Vl
X w
--
PROPOSED R/11'
f}EO/CAllON
l PROPOSED CRO/JNO I ms11NG
GROt/NO RRELINE /
VAIN
EXPOSEO FOt/NOA llON
3:
ll:'.

PROPOSED

BUILDING

SECTION A-A
SCALE HORIZONTAL = 1 ":40'
VERTICAL = 1 ":40'

REC AREA
PARK
DRIVE
ING &
AISLE
IRNl.57{ flOOR
--- - ----=-:!::-::::---'------'- ~ ---,~ j,-~J. I
PROPOSED CROll!WAJ - - -=- ==,- -£%/SllNG7 - -
...J
a.

PARKING &

DRIVE AISLE
'--
CRO/JNO ~
AREA ORAIN~ f)E!FNllON SYSlnl
flPE SECTION 8-8
SCALE HORIZONTAL = 1 ":40'
VERTICAL = 1 ":40'

PROPOSED

BUILDING

PROPOSED

BUILDING
IRM'.57{ fl OOR
£%POSEO Fot/NOA llON

PARKING &

DRIVE AISLE
-
...J
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ll:'.
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lPROPOSElJ CRO/JNO - - - - - - - - - - - - - '==--=::c=-=::::-[=-£,-;11. ..... 'Sll,-~-t;'------,i _7 -~lAINING WALL ~111111 FENCE ON TOP GROt/NO 9 \
SEE LANOSCAPING SECTION c-c RREl.lNE/ PRIVA!F
PLAN FOR fENCING SCALE HORIZONTAL = 1 ":40' AIAIN S£H£l? VERTICAL = 1 ":40'
...J
a.

PARKING &

DRIVE AISLE

PROPOSED

BUILDING
RM'.57f flOOR REC AREA

AIAINLINE

PARKING &

DRIVE AISLE
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fENCING RNAL OES/GN PE1? - - - - - - - - - - - - - - - -l:, =~--r. ==-:::-:::-=-=-:::-::=b RETAINING WALL 111111 FENCE
ON TOP. FENCING RNAL OES/GN
PER LANOSCAflNG PLAN ON
111£ CONSlRIJCllON OOCIJAIENTS.

LANOSCAflNG PLAN ON 111£ T - - - • -
CONS!R(/CllON OOCIIAIENTS. PROPOSED CROIJNO l--£%/SllNG RElAINING WALL ...J
a.

PARKING &

DRIVE AISLE
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PROPOSEO CRO/JNO

SECTION D-D
SCALE HORIZONTAL = 1 ":40'
VERTICAL = 1 ":40'

PROPOSED

BUILDING
IRNl.57f flOOR

SECTION E-E
SCALE HORIZONTAL = 1 ":40'
VERTICAL = 1 ":40'

CRO/JNO

RRELINE/
AIAIN \PRIVA!F
S£H£l?

AIAINLINE
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FENCING RNAL 0£SIGN
PER LANOSCAflNG
PLAN ON 111£
CONSlRIJC llON
OOCIJAIENTS.
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SECTION G-G
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DATE
(}l/2023
•.
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REMARKS
PLANNING SIJBAIITTAl
EXCEL

ENGINEERING
llJfJ IYHIIIC•/JlllEIJIINC•f1!/>!llllflli(;
44D STA'IE ~ ~ ~ ll2D29
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590
581
~ H£tR PLA!F 2 j_.=,. .

J ROWS OF #I'-, OF I ~ ~
RCP f)E!FNllON flPE ~~
SCALE HORIZONTAL I''.· JO'
HORIZONTAL 1':•5'

SECTION H-H
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PROPOSEO CRO/JNOj _ 590
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SHEET 4 OF 7 SHEETS
PRELIMINARY GRADING Pl.AN
C'.; l'H /lfO)m--81M Fl /lfO)m--81J4 ....._ ________________________________________________ ....;..:.;_;;;;;;;;;;;;;;:iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii~...,;;;;;;;;,;;.;;;;,;,;;;;;;;;,;;.;;;;_,.L.. ____________ _.

CAPALINA RD
W. MISSION RD
BLDG 1
BLDG 2REC
AREA

WQ BASIN

WQ BASIN
Δ
Δ
RW RW
RW
RW
RW
RWRWRW
PL PL

PL PL PL
RW
RW
RW
RW
NEW RW
NEW RW
POOL
SPA

CAPALINA APARTMENTS
APN 219-115-33

CAPALINA ROAD, SAN MARCOS CA

UTILITIES
SCALE 1":20'
Feet
0 20 40
f •
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CONSTRUCTION NOTES

UTILITY IMPROVEMENTS
!tlT-01! FIRELINE MAIN
!tlT-02! DDCV
!tlT-aJ! FIRE HYDRANT
!tlT-tu! BLDG FIRE SERVICE LATERAL
!UT-Ml PIV /FIDC
!tlT-06! DOMESTIC WATER SERVICE LATERAL
!tlT-07! IRRIGATION WATER SERVICE LATERAL
!tlT-M! SEWER SERVICE LATERAL (PUBLIC)
!tlT-09! SEWER MAINLINE (PRIVATE)
!tlT-10! llLDG SEWER SERVICE LATERAL
!UT-II! 8" PUBLIC WATER MAIN
-4·
l'r!<~- 1f----W-----w+---w----w--~t-W----w1----w----w----w----w------r--w-----w----w--,--,---w---1-w----1tt--w----w--------.. I

STORM DRAIN / WATER QUALITY IMPROVEMENTS
lso-011 ::.TORM DRAIN INLET
!S0-02! STORM DRAIN PIPE
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EK/ST. RRE H'I/JRANT TO
BE HEl.OCAlEO AS
SHOIIN ,t ON A
CCWCRE1E PAO OU1SIIJE
OF 7JIE NEW PCC
SIOEWALK.

EKIST.~ J/Al/{. 1'i
BE AIM/SlEO TO
(;RAO£
msr. tllll.lTY HISER TO
BE HEZOCA lEO.

E) sr. un. 1rr I
RISER TO Ra/'1
AS THIS PROJECT IS IN THE ENillLEMENT STAGE, THERE IS CURRENTLY NO PLANS & DESIGN FOR THE DRY UTILITIES. THE EXISTING DRY

UTILITIES ALONG THE RIGHT OF WAY SHALL BE RELOCATED OR ADJUSTED

AS NEEDED TO AVOID CONFLICT WITH ADA ACCESSIBILITY, DESIGN & LOCATIONS SHALL BE SHOWN ON THE CONSTRUCTION DOCUMENTS. THE RELOCATION MAY INCLUDE THE GRANTING OF ON-SITE EASEMENTS.

SO-II
590.62 TC
588.J0 IE
59a62 TC SO-II
588.17 IE ::::::i
tlT-tu r-
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5!la82 TG
• 588.,/2 IE
59a66 TC
588.23 IE
590.66 TG
588.16 IE
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SEE LANDSCAPE PLANS FOR LOCATION OF PROPOSED TREES
& VEGETATION. REPORT TO ENGINEER OF WORK IF LOCATION

CONFLICTS WITH PROPOSED SURFACE & UNDERGROUND
IMPROVEMENTS. FINAL LOCATION PER THE CONSTRUCTION
DOCUMENTS.

ONSITE IJTIL/T/£S NOT£

ALL ON-SITE STORM DRAIN PIPES AND FACILITIES

ARE TO BE PRIVATELY OWNED AND MAINTAINED
.,
!SO-aJ! 48"- OF SD DETENTION PIPE (SEE DETAIL
ON SHEET 7 & PROFILE ON SHEET 4).
""'lso"'"---=o,"'I STORM DRAIN PIPE (OUTLET)
ISO-Ml WATER QUALITY BASIN. SEE DETAILS ON
SHEET 7.
""'!so--=--=05=1 WQ BASIN OUTLET. SEE DETAILS ON
SHEET 7.
""'!so-=--=07=1 WQ BASIN OVERFLOW INLET.
!SO-M! STORM DRAIN CURB OUTLET PER SDRSD D-25
IS0-09! PCC CHUTE
lso-,ol ~NERGY VELOCITY DISSIPATOR PER DETAIL ON
SHEET 4
~,so=-~1=11 AREA DRAIN
!S0-12! 4" AREA DRAIN PIPE

SURFACE IMPROVEMENTS
~ 3" AC/6.5 CLASS II BASE (DRIVE AISLE)
!9'-02! 4" AC/7.5 CLASS II (PARKING)
!.9-aJ! 6" PCC CURB (SDRSD G-2)
!.9-tu! 6" PCC CURB & GUTTER (SDRSD G-2)
!.9-M! PCC RAMP
!9'-06! CMU TYPE RETAINING WAILL
!9'-07! PCC SIDEWALK
!.9-M! j' WIDE CURB CUT O 9' 0.C. WITH

ENERGY VELOCITY DISSIPATER
""'!.9,--09=! ADA COMPLAINT PLANTER COVER
!9'-/0! R=20' RADUIS TYPE DRIVEWAY PER

CITY STANDARD)
!9'-11! AC PAVEMENT (STREET WIDENING)
~ 1.5' WIDE CURB CUT @ 20' O.C,
!.9-/J! 2" GRIND & OVERLAY PER CITY

STANDARD
LEGEND

PROJECT BOUNDARY

PROPERTY LINE

RIGHT OF WAY

EXIST MAJOR CONTOUR

EXIST MINOR CONTOUR

PROPOSE MAJOR CONTOUR

PROPOSE MINOR CONTOUR
GE0GRID TYPE RETAINING

CMU TYPE RETAINING

SOIL NAIL TYPE RETAINING

EXIST WATER MAIN

EXIST SEWER MAIN

NEW WATER MAIN

NEW SEWER MAIN

FLOW LINE

PCC BROW DITCH
EXIST. FIRE LINE

FIRE HYDRANT

STREET/PARKING LIGHT

STORM DRAIN

INLETS/CLEANOUTS

WATER SERVICE LATERAL

SEWER SERVICE LATERAL

FIRE SERVICE LATERAL

PCC CURB

PCC CURB & GUTTER
---PL---
---RW- --
-----100----
----10,u---
W·
---s---
---w---
---s---
---F---
□ [] C':::::::,
-x-•w
• '"'X'.-S'
>-«;-'i:

SHEET 5 OF 7 SHEETS
EXCEL PRELIMINARY GRADING Pl.AN

DATE REMARKS
IU/2023 /!'.ANNING Stl841/TTAL ENGINEERING
llJfJ IYHIIIC•/JlllEIJIINC•f1!/>!llllflli(;
44D STA'IE ~ ~ ~ ll2D29
C'c 1,,. _____________________________________________________________________________________________ ...;;..:;iiiiiiiiiiiiiiii~iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii.:,_ __ l'H..;/761J)US-81,;;;,,;.;,,;.Mfl..;/761J)US-81,;;;,,;.;,;.~ __ 1,. ________________________ ,1

CAPALINA RD
W. MISSION RD
APN 219-115-30
BLDG 1
BLDG 2

REC AREA

WQ BASIN

WQ BASIN
Δ
Δ
RW RW
RW
RW
RWRW
RW
PL PL

PL PL PL
RW
RW
RW

CAPALINA APARTMENTS
APN 219-115-33

CAPALINA ROAD, SAN MARCOS CA

CIRCULATION
SCALE 1":20'
Feet
0 20 40

EMERGENCY VEHICLE USED IN

THIS AUTOTURN SIMULATION
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E-ONE CYCLONE II 95 HP

CITY FIRE & RESCUE
..

JO dco.

LCLL lrc-1,;ull Sul_i_j:y,;;; Irr:.:. ,'II ,jyflc; rec;ervec 4500
!/ !6
E-ONE CYCLONE II 95 HP
ffi'Dlh' -t/ 50'
l O<.}< TO / OC'K ,7·t!F- -6 C
.)lFFP/VC ,4/1,i(:/F -43 4
SHEET 6 OF 7 SHEETS
jj EXCEL PRELIMINARY GRADING Pl.AN
•., DATE REMARKS '" '' (}l/202J f!'.ANNINC S(/841/TTAl ~ 1NIJ ffNMC•ENf1EBltC•(J9,!ilrlliC ~ 44D STA'IE ~ ~ ~ ll2D29
"" PH {780)US--8IIB Fl (1f0}745-8tJ4
C',;~~=~-------------------------------~iiiiiiiiiiiiiii;;;;;;;__iiiiiiiiiiiiiiiiiiiiiiiiiiiiii~..;..;......;..;..........1, ________ _____.

ENGINEERING

CAPALINA APARTMENTS
APN 219-115-33

CAPALINA ROAD, SAN MARCOS CA

SWQMP BMP
OISTANCE FROl,I TOE
OF st.OPE TIJ WIER
E
"FINAL
PER SO'l EM
RECQIIAIENOA 110NS
60" MIN

SIDEWALK WHERE

APPLICABLE

COMPACTED SOIL

DEEPENED

SIDEWALK TO G

UNCOMPACTED SUBGRADE
6"
2' MIN
E
/IFRROW Sll?t/CTVR,
ANO AIA/NlFNANCE Ci

APALINA RD
4" AC OVER 7.5"

CLASS II BASE

INEERED
MEDIA

D CURB TO GRAVEL
LAYER
NOTE 9
AASHTO (157
GRAVEL
CREEN SlREET IECETAlEO SWALE SECllON
T'IPICAl SECllON NOT TO SCALE
10P OF BASIN
3• "AGB)' All/LCH
_,.-~"AN ~~RON FOR

APRCW FOR ENERGY
0/SS/PAIER
OROIJCHT llJI.ERANT
PLANllNG PER

LANOSCAPE

PERMANENT WATER QUALITY

TREATMENT FACILITY
f'.EEPING OUR WATER WAYS CLEAi~
MAl~TAIIS l'/ITH CAW ml ~lmJFICATIDI\S 1/ITHJI.JT AGFH:" APl'~CVAI DETAIL

WATER QUALITY SIGN- PLACED AT

EACH BIOFILTRATION BASIN
NOTE: ALL BIOFILTRATION AREAS WILL

HAVE A SIGN POSTED TO BE
VISIBLE AT ALL TIMES.
4'-6" OROP
/ROAi Ct/RB
' Ct/ T TO APRON
\_,--,---,
,;.__-----
Pi.ACElJ
THIS POINT ABOI£
• A I 0/AIENS/ON OR
.• SEALED TO Ct/RB
1,.. f £)(CA /IA TEO
SI.OPE
OZSM S11f f&Alf!lf$
10P OF RETAINING

WAZL PER PLAN
• THE APPROWAJF OEPTH TO GRO(JNOWAIER IS
GREA !ER THEN 20 fEET.
• THERE ARE NO NATl/RAl H'f!JROI.OGIC FEATl/RES ON
THE S/1£
• BASEO ON WAIERSHEO NAPPING OF POlFNllAl
CR/llCAZ COARSE SEO/A/ENT Y/ELO AREAS (CCSYA)
THERE ARE NO CCSYA lOCATEO l#flHIN THE PRO.ECT
80//NOARY OR 11?/Bt/TARY TO THE Rl/NOff B}PASSEO
AROUND THE S/1£
• THE SITE PROPOSES TO IXWNECT THE £)(!SllNG Ct/RB
&- Gt/TIER lOCA TEO ON AIISS/ON ROAO ON THE
NORTH S/OE OF THE PRO.ECT.

I. 47' /ROAi THE EAIERGENCY
01£/?flOW TG TO FS OF THE BASIN
E!.IERGENCY 0/IFRROW ONLY --~~

BOTTOAI OF BASIN
LECEN[)

IJAIA BOIINOAR Y
- -
WA lER l){JAUTY EffFClll£ AREA
"PERV!Ol/S AREA AAIENOEO SQIL
~
'N01E· All lANOSCAPEO AREAS IIILL BE Pi.ANTEO l#fTH
AAIENOEO .m'LS SO-F £)(C£PT FOR BlrY1l.11?A 110N BASINS. l)ISli4NCE FROl,I TIJE
OF st.OP£ TIJ WIER
E
TOP OF BASIN 0/IFRROW Sl1?t/C1l/RE
OUT ANO AIA/NlFNANCE ACCESS
FSELEV

PER PLAN
8WR.1HAIKW 8ASW A OETM.

NOT TO SCAZE
(20-30 Alll PONO
'flNAl S7ZING OF l.lNER

PER SQIL ENGINEERS
REalllAIENOA llONS
ORIRCE I I f. 39'
I.· f aCA /IA TEO
SI.OPE
WA lER Q{JALITY BASIN INSTALLAllON NOlES:·
f. 3 INCHES OF COCONUT ro'R.

2. AN t/N/JERIJRAIN ct.£ANOl/T l#fTH A Al/NIAil/Ai 6-INCH 0/AAIEIER ANO LOCKAB!.E CAP IS PLACElJ £1£/?Y 250 TO 300FEET AS REOt!IREO BASEO ON t/NOERORAIN LENGTH. .1 1£GETA 110N t/SEO SHOIJLO BE st/lTABI.E FOR THE Cl.11,/A lF PER lANOSCAPE Pf.ANS

4. flllER COARSE IS A AI/Nll,/l/AI OF 6 INCHES PRO/l/0£0 IN 1MJ SEPARATE 3 INCH LAYERS. THE 10P LAYER SHALL BE AIAOE OF AS1AI c» CHOKER SANO ANO THE BOTTON LAYER BE OF AS1AI Na 8 AGGREGA1E AIARKEHS STAKES SHALL BE tJSEO TO ENSURE t/NIFORAI LIFT lHICKNESS.

5. AASHTO Na 57 STONE OR ct.ASS 2 PERIIEABI.E PER CAL ll?ANS SPECIRCA110N 68-1.025 IS RECOIIAIEMJEIJ FOR 711£ AGGli'EGA lF STORAGE LA 'tER. WASHEO, OPEN-GRAOEO CRIJSHEO ROCK A/A Y BE t/SEO, HOH£1-U?, A 4 INCH Al/NIAil/Ai WASHEO PEA Gli'A m fll lER Cot/RSE LA YER AT THE TOP OF THE CRIJSHEO ROCK IS REOt/lREO.

6. MIPERll£4BIE LINER SHALL BE INSTAllEO #HEN THE BIORL ll?A llON BASIN IS l#flHIN 10 FEET OF RETAIN/NC WAZLS OR Bt//LfJING FOt/NOA llONS, OR AS RECOAIAIENOEO 8 Y THE SQILS ENC/NEEJ?, OR REl){JIREO BY THESE Pi.ANS. IAIPERAIEAB!.E LINER SHALL BE .JO A/IL lHICI( (PER COUNTY OF SAN 0/EGO GREEN STREETS OES/CN STANOARO ORAl#fNG GS-3. 00 ANO COUNTY GREEN STREETS st/PPlEl,/ENT TO CAL ll?ANS SPEC/RCAllONS 20-ff.088) CONRGIJl?EO TO ENlJREl.Y ENCOl,/PASS 711£ SIPES OF THE WAIER l){JALITY BASIN.

7. ll,IPERA/£ABLE LINER BE CONSlRl/ClEl) IN COAIPi.lANC£ l#fTH THE COUNTY OF SAN 0/EGO GREEN STREETS St/PPI.EAIENT TO CAL ll?ANS SPECIRCAllONS 20-lf.OBB.

8. B/Ofll ll?A llON SQ'l J/EO/A LA YER (BSA/) SHALL CONSIST OF 60% TO 80% BY 1121:l/AIE SAND, l/P TO 20% BY JIOl.l/AIE llJPSO/L, ANO l/P 20% BY 1121:l/AIE CQIIPOST (PER CITY OF SAN A/ARCOS BNP OES/GN AIANt/AZ fFBRt/ARY 2023 APPENOI)( F.3 SECllON 8tJ3-2 BlENOEl) BSA/ CR/lERIA ANO lFSllNG REl){JIRBIENTS). BSA/ SHALL BE L/GHll.Y COAIPACJFO ANO Pi.ACED IN LOOSE UFTS APPRO)(JAIA!EZY !2 INCHES TO ENSt/RE REASONABLE SETllEAIENT l#f1JIO{JT £)(CESS/V£ COAIPACllON (PER CITY OF SAN A/ARCOS BNP /JES/GN AIANt/Al FEBRt/ARY 2023 APPENOI)( F.3 SECllON 803-6 lJEl./1£/?Y, STORAGE; HANOUNt; ANO PA YA/ENT). BSA/ PERIIEABIUTY REOt/lRES 8-24 INCHES/HOUR FOR BA/PS l#fTHOUT Ol/ll.ET CCWll?Ol; 15-80 INCHES/HOUR FOR BA/PS l#fTH OUll.ET CCWlROL; lFSllNG IS RE(l(IIREO TO OEAIONSll?AlF (PER CITY OF SAN A/ARCOS BNP OES/CN AIAN{JAl FEBRUARY 2023 APPENO/)( F.3 SEC110N 803-8 SIJAIAIARY).

9. THE AGGREGAJF STORAGE LAYER SHAZl BE COIIPACTEO IN ACCORDANCE l#fTH SQILS ENGINEER'S RECQIIAIENIJA 110NS.
ta 01£/?flOW Sll?t/CllJRE TO HAI£ A Al/NIAil/Ai OF 12 INCi/ES OF fl?EEBOARO. ff. AZL LINER INSTALLA llONS, FIEZ.O H£L!JING OF SEMIS, ANO OBSERJIA llON OF SQIL All)( Pi.ACEA/ENT SHALL REOt/lRE SPECIAL INSPECllON BY THE PRo.ECT GEOlFCHNICAl ENGINEER OR 071IER (l{IAUREO PERSlm. A LET!FR CERllFY/NG PROPER INSTALLAllON SHALL BE PROV/0£0 TO THE ENGINEER OF RECORD TO ACCEPTANCE OF THE FAC/llllES.
v~ f20" ~ /J£1ENlKW PIPE I/ER CROSS SECIKW

12. SPECIAL INSPECllON SHALL BE REOt!IREO FOR CCWSlRl/CllON OF All BIORl ll?A 110N BASINS. INSPEC110N SHALL BE PERFORAIEIJ BY A (l{IALIREO INO/Vl/){/AZ (st/CH AS.- ENGINEER OF RECORD, OSO) INSPECllON SHALL INCf.t/0£:
8 f/B' lHICK l-BRACKET
(4- L-BRACKETS TOTAL)
8 590.20 TG

CA TCHBAS/N SIZE
.Jo'X.16''
1/ElR S 'Cl/Ii
HOR Sll?t/Cll/RE TO BE rm HOPE _ __..

SHEET. 1/2' lHICIC OR "(}{JI ZENT
SHEET. I •

TO BE HIIEC HOPE
rQr, OR EOt/lVALENT
/ I
!2" OOIIN

STREAAI PIPE
m'Xm"'

CATCHBAS/N
12" PIPE
2-1" PIPE OIJT PER TABl£
Fl. PER PLANS STA/NlESS SlFEZ BOI.T ::_~:.L---S~~~L__---l,.<'9-=~ A (4 BO/. TS PERL-BRACKET)
SECIKWB-8
1/EJR ctWTRa. S1RI/Cll/li£ PLAN /Elf

NOT TO SCALE
590.20 TG

NOT TO SCALE
as· HOR 3
-
--
3'
,--ij'EJH S1Rt/CTVRE TO HIIEC HOPE SHEET,
!/5' lHICIC OR "(}{JI ZIENT
H, 1/J HOIES (2 TOTAL)

SECIKWA-A

NOT TO SCALE
IIE1R ctWIM:l STRf/Cll/li£
OETM.
-
2'
. a2s·
f.5'
I I,.
~-
3'
2 1/EJR ctWIM:l S1RI/Cll/li£ I/Ml 1/EJR

NOT TO SCALE
ff lYJVlJIIZ $TIN/CM£NOIE
THE Pt/RPOSE OF lHIS SlRt/Cll/RE IS FOR AOO/llONAL
HYOHOAIOIJIF1CA110N flOW CCWTROI. SEPARATE /ROAi TYPICAL BIORL ll?A llON Fl.OW AIOOEL/NG
\
\
I
---- - ------ - ------ - --------------

SOURCE CONTROL REQUIREMENT
lt1!~1
SC-1 PREVENTION OF ILLICIT DISCHARGES

ENGINEERING
SC-2 STORM DRAIN STENCILING OR SIGNAGE
L\ND PIANNNG • ENlllEERING • SURlm«,
440 smE PlACE, EmDOO, CA 91029 SC-5 PROTECT TRASH STORAGE /
/

SOURCE CONTROL

NODE IMPLEMENTAION

EFFECTIVE IRRIGATION WILL BE IMPLEMENTED AND

VEHICLE WASHING IS PROHIBITED
STENCIL EVERY INLET WITH PROHIBITIVE WORDS: "NO
DUMPING! DRAINS TO WATERWAYS" AND "NO CONTAMINE"
IN SPANISH.

ONA ONA
NANE T'tPE
OIIA-1 wi'AAY.5' " BIIP
OIIA-2 wi'MVS ll
BIIP
IWAAY.5' 1l OIIA-J BIIP
~~
ONA-,f 411116A 1IN6 ,,,..,
. '
I I
BIIP T'tPEOFBIIP NAVE
BNP-A IJKYll lRA lltJ'I
BIIP-8 IJKYll lRA lltJ'I
om,c,.

BIIP-0 1£CETA lElJ
="·
- -
t
/
EHEC111£
AREA
(SfFT)
22J8
962
8J9
-
6" PVC PIPE PERFORAllON
LAYOl/T DETAIL

NOT TO SCALE
SIRl/Cll/RAL IJl()-EJASIN Sl/AIJIARY TABLE
Al
(/Nof} A2 AJ B C 0
/l'AIER {INCH) {INCH) {INCH) {INCH) (/Nof} ll/1' OF aEAN /Jl'P£H (JIJAUTY+ ,11£lJ/A G'i'AIEZ lltllC11' BAJlN (JIJT (lrlflC£
9 J2.52 6 - 18 12
9 21 6 - 18 12
6 12 - - 18 12
- - - - - -
E
(FT)
tHSET
,175
225
f.5
-
IIE1R PLATE 1

NOT TO SCALE
IEl8 PLAIF N01F:
1/EJR PLATE 2
NOT TO SCALE • /l£RlflCA 110N OF 01£/?AlL 0/AIENS/ONS PRIOR TO PlACEAIENT OF A/A IER/ALS,· • Pi.ACEA/ENT OF THEUNER, IF RE{){J/REJJ;ANO SEAAIS OR PENElRA 110NS HOR Pi.Al£ 2 IS tJSEO TO Bl.OCK WATER IN OE!ENllON PIP£ • Pi.ACEA/ENT OF THE GRA/.£l. flllER AIAlER/AlS, ANO flllER AIEOIA; • All INLET ANO Ol/llET SlRt/CllJRES /Nct.tJOING t/N/JERIJRAIN5, IF RE{){J/REO.

DETAIL
iVO Ol/AIPINC• AT CATCH BASINS
NO!E· All CA 77:H BASINS l#fTH GRA lFS SHALL
BE SlFNC/lElJ l#fTH CITY REOt/lREO /1EAI PER
ABOI£ OETAIL (OAS AIANt/FACTl/RING /500 OR
EOt/lVALENT).

BO)( RISEN
01£Rfl.OW
SIRl/Cll/RE
512<
(/Nr,1IEs)
.Jl£1'J8
.Jl£1'J8
-
-
I
'
/
(,WfflC£S

IJIAAIEIER
/Jl'P£H LO/Im
(INCH) (INCH)
- lJ75
- Q82
- -
- -

SUMMARY OF PERVIOUS AND IMPERVIOUS AREA

PERVIDUS AREA (SF) IMPERVIOUS AREA (SF)
DMA-1 13,897 81.594
,_ DMA-2 1,850 5,901
DMA-3 1,287 34.286
DMA-4 I 4,853
SCALE· ! ' 50"
11/PERVEAB/£

1./NEH !'
/IT
/IT
51/JES OlfY
-
100
SQIL IS AAIENOEO /If TH 2 INCHES OF AIEOIA
Al/)(£0 INTO THE TOP 6 INCHES OF IN-S/Tll
.m'LS, AS NEEOEO, TO PROAIOIE Pi.ANT
GROWTH (OP110NAZ) FOR ENHANCED
POI.Lt/TANT IXWlROL, 2 fEET OF AIEOIA CAN
BE I/SEO IN PLACE OF INS/Tl/ .m'LS.

H'(LW(lOG{C 2¥ 61{0IH'
THE H'f!JROI.OGICAL SO'l GROUP FOR lHIS
Sil£ IS TYPE CANO TYPE 0.

DATE
()l/2023
• CONlRACTOR SHALL TAKE PIC1l/R£S AT EACH STAG£ OF INSTAllAllON ANO St/BAI/T!El) TO ENGINEER FOR 1£1?/RCA llON OF INSTALL.

INSPECTOR SHALL BE GIi£# A A//Nll,/t/AI OF "8 HOURS PRIOR TO INSPECllON. UPON COI/PlEllON THE INSPECTOR SHALL PROV/OE A CERllRCA110N TO THE ENGINEER OF /IORK. f.1 PROPOSED A/A 1£1?/AlS, st/CH AS AGGREGA lE; fll lER A/A lERIAZ, ANO fll lER AIEOIA SHAZl BE SIJBAI/TlEO TO THE ENGINEER OF MIR!( FOR APPROJIAZ.

H
(C:;>i\.SS 1\:;>Er,)
t
1-IOTES
FILTER FAB:;,1c
(WHC_RC. RlOUlr:U
t:JY u~:;1r~cc{,
* 2L?S3 I OR 11 fAATER
=-LACED .4J~[) COMPACED II~
AC•:::CRJA\JC[ VVITI I
i\SH1 02321 II~ PIFE ZO~JE
---- C --~ SUI IP1l::,LI:_
FOl_l'~[,l1TIC,~I
" EEJDll~G 1:cL;:,,ss I o:;, II t,IATEPIAL) J
= 4'' l,11fJ_ =-JF 1 ?" - 74" PIPF
= 6" f~l'i FDR JJ" - 6C" FIP=-
II
:R ,:::;io PWT.)
1 ALL FEFERE\J'.:T3 TO CLASS I OF I MA-~RIA_ AR~ PEF ASH✓ D2321 "5TA\IJARD :,Rfi.CTCE "OR JNCERG~Oll~D 11,s-A_LATIO~J OF THER\IO"LASTIC FIPE FO~ '.Brns ~~c OTf-ER GRAIHY FL'.W APPLIC~TI0\]3", LATEST rn-c,r,1.

2. AL_ R~TENTICH M~D JEEr,n::)N S'/3TE,IS SHA_L BE IWiTALLED IP" ACCORDAW~ \VITI- ASW D2321, _A-~s- EDITIO\J ;,~C TI-E \1A\IJFACTLREP'S PJ3LISI-ED l~JSTAL_A-lrn CJIDE_lfJES.

3. PIEASPES ~HCUL[, BE TNH.J Tc, PRC\HIT TI-E ,11,~RATC,1-.J OF rJATl'/E FlNES 11-.JTO THE BACr:~ILL W,TER !'L, WI-El~ RECUIRCD. SEE As-,1 C2.32.1.

4. FIL- 0 R =,'BRIC: A '.::ECEX-LE FA3RIC ,14( BE USED AS SPECIFIED 3'( TI-E CI-.JGIIEER TO ='REVE~T THE MGRATlm.J JF F~IES FRJvl THE P"A-'✓ E SOIL l~TO THE SELECT BACr:0 1LL ~14TER,'L. ~ 10.nJAIIJ~: WIili!_ IL ll<UJCI LlD IOM 1~: ur.1'_;1AULL, IIIL crn ·'.',1:1011 C>IIALL LXCA\'AIL 10 A LlU-'111 h'LQUl}Ll] LJ·/ IL L~!;WJLLI~ A~_:, l(L-'LAC_ \\illll SJ IALI_L M41L/AL J''.i '.if'LCIIILL'. LlY Ill_ L~:;11JU< A'', NJ A_TUI.JA 'v'E .~.~CAT -~E DSCRETIQ\J CF THE DESIGIJ CI.JGl~ICER, THE TRCI.JCH 30rOM l✓ J'Y 3E STABU2ED USII.JG .1'. GEJTD'.TILE MATERl1'.L. (-i_ Ll.Ll.lillli;_ :-IJll.~1'11 MA l!IAI c; 1411 Ill U 4,;c, I [JI/ II. 1111 l:(JIJ /J'.1:1()1 c;11A1 I 11wv11:1 J1JUJIAI IJl.".11:1~ I '.Ji MAIi IIAI c;l'I 1:11 1:A IJ-.J I(' I ~::rtJI I! .. 1~11 :;~ ()1111/Wl,;I \]:)1111 llY 1111 I rmNI 11'. MIIJIM.J\,I Ill II )11,,J(; 1111(>~1,;~ SH,0,L.L BE '1'' (',=,om-) FOO: '1''-;:;-1" (:1Cmr-5C0mm); 6' (5Cmrr) FOR 30"-60" (75·Jmm-1500mm).

I ~1-ltJI 11!. ~14111!,0I ~-IIAI I 11 IN~·IAII 1: A,; 1-11 :J 1111111 IIJ ~~-IM li-'.i/'I, A I~; 11111:)~ K. P/IIJl\,IIJl,1 1:1:1;1 i: Ml(JIM.lvl I.I:'~ IS (IV I< Al I Iii INI 1.,1-.J/III II ~JIIIIIJ •;v~;11 M~; 1-.J ~Jll~l-lli,01111: 4 'I I 1:;,.11,1~~; ;1,114:-;~; (II! IA\J l~(:Al'I Al/I 4~;) r,;. '"11/111,1 1111' ,11 '11'1 Ill 1il!(;IIIJII ~-lllll 4,:1 -~l:IIIIIIIIJAI 1:()\11 II 1,1AY Ill Ill ll,11<1 I) TC, PR~';E\IT FLO/\T,"T1J~. FOR -R,'fflC r,:iFLIC,\TlOI\S, \ll~IMUM CJ,'ER IS 12" U°' TO 36" D,"l✓ E-CR PPE .',f,D 21" CF CC 11EC: FOR ,12'' - 6C" Dl/1\1ETEC: Pl='C, ME.',SUREJ FC:OM TO=' CF PIPE TJ B0-TCM OF F_D:IBLE Pt,,1EME~IT OR TO

11.,1' II 111,;111 I 'J'\11 \11 NI
l~Jfill~AL t~O\llf~A- T1'=>ICAI 1JClvll\JAI TYFIC,t.. S rF '
H
JIM/[TCR O.D '.:iPPCl,13 "s" '.::P.4.rn.lG "c" w;,u ",:" (I\J~j -RPFFIC) ("""RPFFIC) 48" sc." 25" 7g 5' 18" 12' 24'
(120D,111) (1372mtT) ,·6:::,, .. rn) (1'~::J4mm·1 '"4:7,.--111) (J,JS11m', (t,1C1T,1) 111~,mr, ens, 111r.. + CL.4.SS I BJIC<F LL REQJIRED P,RJUlfl 60" JIAf/ETER FITTl~JGS .1'.CV,',~CED D~Alf-1.1'.GE SfSTEMS, IIK. ("J'DS"; HAS FREP.ARED THIS CETAI_ BA.SED J\J t,IFOfN.1'.TlOIS FRO\ICED TO ,',,OS. THIS DRAWI\J'.; IS l~ITEOED TC DE°'ICT THE CCl✓ PCf,,JE~JTS i;S REJJ::STED. ADS H.1'.S r.JQT PER=CRf✓ ED AI.J'-' El1GlrJE::Rll·IG oc, CES Gl,,J SER\ICES FOR THIS :ipcJ::c, f.OR H/\S /IDS 11,,JDE='Cl,,JDENTLl VERIFED THE lf,FORMr1TIJ\j SUPPLIED. THE 111ST/\Llf,T7Q\I CET1\I_S PRCv10ED HEREl~I ,".RE GEl·JER.O.L RCCOMIIEl'SDf,TIJ~S /\!'JO ,'RE ~OT S°'Ec1=1c FOR THIS PPDJEGT. THE JESICN rnClflEER Sf-1\LL REVIE\\i THESE DET!'ILS PRIO~ TD CCI-JST~UCTCl,,J. IT I~ T~:: DESICr1 E'ICll'SEERS RESFCl%131LIT1 -::i ::r•,SURE THE CETAI_S l'kC'v1UUJ Ht.kt.I~! 1,1t.t.1~ Uri t__x_Ct.U~ 17~ Al' 'Ll:.:J'.l:llc ISAIIU~IP.L Sl41t.. Cf/ LULAL klOUlkU/llJl<c; A~J :.J CI.JSUfit. IH.41 IHC. r,f"l/111 c; Plc'.Tv'll"lll I rnrn.J Al,- Ar.,~IPTAnl I 1,1-i -111r, PlcClilr.T CRA\l\'ll·JG ~Ll~BER:

B\' 1,1M/DD/'r'Y :HK'C
lfRlffV"~ 4G4n -RUEIIMJ BLVD
rtntnr~~ HILLIA'lD, CHIC 43026
SHEET 7 OF 7 SHEETS

EXCEL PRELIMINARY GRADING PLAN

REMARKS
Pi.ANNING st/BAIITTAZ ENGINEERING
I.NI) IY,/lll;•EIKIEl/K•~
HI STAI£ ftMl; ~ Cl l2f/6
PH (760)745-8118 FX (760)745-1800

TRASH ENCLOSURE WILL BE PROTECTED BY LID OR BE

WALLED WITH ROOF TO AVOID STORMWATER GET
CONTAMINATED 'N01E· WA !FR l){JALITY PONO/NG = At- 3" OF Alt/lCH (A/IJLCH IIILL BE CCWS/STEO OF Nt/11?/ENT SENS/lll£ A/A !ER/Al st/CH AS COCON//T COIR PER BF-2) /II {)&lJ,.,_.,• Fl (IID/lf5-8IJ<

San Marcos City CouncilMarch 26, 2024

San Marcos City Council
March 26, 2024