36C10F18R0581-078.pdf

STORMWATER POLLUTION PREVENTION PLAN

Sacramento Valley National Cemetery Phase 2 HDR Project # 10061539

WDID # __________

RISK LEVEL: 2

Legally Responsible Person (LRP)/Project Sponsor Approved Signatory

Property Owner/Lessor Lessee

Project Address:

5810 Midway Rd.

Dixon, CA 95620

SW corner of Midway Rd. and Batavia Rd.

SWPPP Prepared by:

HDR

2365 Iron Point Road, Suite 300

Folsom, CA 95630 Chad Drago, QSD

SWPPP Preparation Date

June 27, 2018

Estimated Project Dates:

Start of Construction September 28, 2018 End of Construction November 23, 2020 HDR Project No. 0000000010061539

SWPPP Disclaimer

Upon approval by the LRP, this SWPPP will be transmitted to the client to be provided to the client’s or contractor’s QSD/QSP. It will be their responsibility to upload and gain approval via a Notice of Intent (NOI) from the State Water Resources Control Board (SWRCB). Once acknowledgement from the SWRCB is received by the LRP that an NOI has been issued, soil disturbance activities may commence. This assumes other local conditions have been satisfied as well.

This Stormwater Pollution Prevention Plan (SWPPP) includes elements that can only be provided by the contracted QSD/QSP for construction activities. The selected contractor will continue to update the SWPPP by incorporating construction means, methods, techniques, sequences, procedures of construction, and health or safety programs.

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Table of Contents Table of Contents ........................................................................................................................... i

Qualified SWPPP Developer

Legally Responsible Person

Amendment Log

Section 1 SWPPP Requirements

1.1 Introduction

1.2 Permit Registration Documents

1.3 SWPPP Availability and Implementation

1.4 SWPPP Amendments

1.5 Retention of Records

1.6 Required Non-Compliance Reporting

1.7 Annual Report

1.8 Changes to Permit Coverage

1.9 Notice of Termination

Section 2 Project Information

2.1 Project and Site Description

2.1.1 Site Description

2.1.2 Existing Conditions

2.1.3 Existing Drainage

2.1.4 Geology and Groundwater

2.1.5 Project Description

2.1.6 Developed Condition

2.2 Permits and Governing Documents

2.3 Stormwater Run-On from Offsite Areas

2.4 Findings of the Construction Site Sediment and Receiving Water Risk Determination

2.5 Construction Schedule

2.6 Potential Construction Activity and Pollutant Sources

2.7 Identification of Non-Stormwater Discharges

2.8 Required Site Map Information

Section 3 Best Management Practices

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3.1 Schedule for BMP Implementation

3.2 Erosion and Sediment Control

3.2.1 Erosion Control

3.2.2 Sediment Controls

3.3 Non-Stormwater Controls and Waste and Materials Management

3.3.1 Non-Stormwater Controls

3.3.2 Materials Management and Waste Management

3.4 Post construction Stormwater Management Measures

Section 4 BMP Inspection and Maintenance

4.1 BMP Inspection and Maintenance

4.2 Rain Event Action Plans

Section 5 Training

Section 6 Responsible Parties and Operators

6.1 Responsible Parties

6.2 Contractor List

Section 7 Construction Site Monitoring Program

7.1 Purpose

7.2 Applicability of Permit Requirements

7.3. Weather and Rain Event Tracking

7.3.1 Weather Tracking

7.3.2 Rain Gauges

7.4 Monitoring Locations

7.5 Safety and Monitoring Exemptions

7.6 Visual Monitoring

7.6.1 Routine Observations and Inspections

7.6.1.1 Routine BMP Inspections

7.6.1.2 Non-Stormwater Discharge Observations

7.6.2 Rain-Event Triggered Observations and Inspections

7.6.2.1 Visual Observations Prior to a Forecasted Qualifying Rain Event

7.6.2.2 BMP Inspections During an Extended Storm Event

7.6.2.3 Visual Observations Following a Qualifying Rain Event

7.6.3 Visual Monitoring Procedures

7.6.4 Visual Monitoring Follow-Up and Reporting

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7.6.5 Visual Monitoring Locations

7.7 Water Quality Sampling and Analysis

7.7.1 Sampling and Analysis Plan for Non-Visible Pollutants in Stormwater Runoff Discharges

7.7.1.1 Sampling Schedule

7.7.1.2 Sampling Locations

7.7.1.3 Monitoring Preparation

7.7.1.4 Analytical Constituents

7.7.1.5 Sample Collection

7.7.1.6 Sample Analysis

7.7.1.7 Data Evaluation and Reporting

7.7.2 Sampling and Analysis Plan for pH and Turbidity in Stormwater Runoff Discharges

7.7.3 Sampling and Analysis Plan for pH, Turbidity, and SSC in Receiving Water

7.7.4 Sampling and Analysis Plan for Non-Stormwater Discharges

7.7.5 Sampling and Analysis Plan for Other Pollutants Required by the Regional Water Board 48

7.7.6 Training of Sampling Personnel

7.7.7 Sample Collection and Handling

7.7.7.1 Sample Collection

7.7.7.2 Sample Handling

7.7.7.3 Sample Documentation Procedures

7.8 Active Treatment System Monitoring

7.9 Bioassessment Monitoring

7.10 Watershed Monitoring Option

7.11 Quality Assurance and Quality Control

7.11.1 Field Logs

7.11.2 Clean Sampling Techniques

7.11.3 Chain of Custody

7.11.4 QA/QC Samples

7.11.4.1 Field Duplicates

7.11.4.2 Equipment Blanks

7.11.4.3 Field Blanks

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7.11.4.4 Travel Blanks

7.11.5 Data Verification

7.12 Records Retention

CSMP Attachment 1: Weather Reports

CSMP Attachment 2: Monitoring Records

CSMP Attachment 3: Example Forms

CSMP Attachment 4: Field Meter Instructions

CSMP Attachment 5: Supplemental Information

Section 8 References

Appendix A: Calculations

Appendix B: Site Maps

Appendix C: Permit Registration Documents

Appendix D: SWPPP Amendment Certifications

Appendix E: Submitted Changes to PRDs

Appendix F: Construction Schedule

Appendix G: Construction Activities, Materials Used, and Associated Pollutants

Appendix H: CASQA Stormwater BMP Handbook Portal: Construction Fact Sheets

Appendix I: BMP Inspection Form

Appendix J: Project Specific Rain Event Action Plan Template

Appendix K: Training Reporting Form

Appendix L: Responsible Parties

Appendix M: Contractors and Subcontractors

Appendix N: Construction General Permit

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Qualified SWPPP Developer Approval and Certification of the Stormwater Pollution Prevention Plan

Project Name: Sacramento Valley National Cemetery Phase 2

Project Number/ID: HDR Project # 10061539

“This Stormwater Pollution Prevention Plan and Attachments were prepared under my direction to meet the requirements of the California Construction General Permit (SWRCB Orders No. 2009- 0009-DWQ as amended by Order 2010-0014-DWQ and Order 2012-0006-DWQ). I certify that I am a Qualified SWPPP Developer in good standing as of the date signed below.”

QSD Signature Date

Chad Drago, PE, CFM, QSD C71845

QSD Name QSD Certificate Number

ASMEC Civil Section Manager, HDR 916.817.4915

Title and Affiliation Telephone Number chad.drago@hdrinc.com

Email

06/27/2018

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Legally Responsible Person Approval and Certification of the Stormwater Pollution Prevention Plan

“I certify under penalty of law that this document and all Attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, to the best of my knowledge and belief, the information submitted is, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations."

Legally Responsible Person

Not required – certified through approval of upload document to SMARTS

Signature of Authorized Representative of Legally Responsible Person or Approved Signatory

Date

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Amendment Log

Amendment No.

Date Brief Description of Amendment, include section and page number

Prepared and Approved By

Name:

QSD#

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Section 1 SWPPP Requirements

1.1 INTRODUCTION

The proposed Project is the Phase 2 expansion of the existing Sacramento Valley National Cemetery (Project). The total site is approximately 554-acres in Solano County, California at Latitude of 38°41'38.81" (38.413881) North and Longitude of 121°87'38.67" (-121.873867) West, whereas the expansion construction limits are approximately 94 acres. The project consists of installing internment area, irrigation system, access roads, parking, and site furnishings/signage. The project site is shown on Figure 1, Vicinity Map in Appendix B.

This Stormwater Pollution Prevention Plan (SWPPP) is designed to comply with California’s General Permit for Stormwater Discharges Associated with Construction and Land Disturbance Activities (General Permit) Order No. 2009-0009-DWQ, as amended in 2010 and 2012 (NPDES No. CAS000002), and issued by the State Water Resources Control Board (State Water Board).

The permit is also referred to in this document as the Construction General Permit (CGP). This SWPPP has been prepared following the SWPPP Template (for traditional projects) provided on the California Stormwater Quality Association Stormwater Best Management Practice Handbook Portal: Construction (CASQA, 2012). In accordance with the General Permit, Section XIV, this SWPPP is designed to address the following:

Pollutants and their sources, including sources of sediment associated with construction, construction site erosion and other activities associated with construction activity are controlled;

Where not otherwise required to be under a Regional Water Quality Control Board (Regional Water Board) permit, non-stormwater discharges are identified and either eliminated, controlled, or treated;

Site BMPs are effective and result in the reduction or elimination of pollutants in stormwater discharges and authorized non-stormwater discharges from construction activity to the Best Available Technology/Best Control Technology (BAT/BCT) standard;

1.2 PERMIT REGISTRATION DOCUMENTS

Required Permit Registration Documents (PRDs) shall be submitted to the State Water Board via the Stormwater Multi Application and Report Tracking System (SMARTS) by the Legally Responsible Person (LRP), or authorized personnel (i.e., Approved Signatory) under the direction of the LRP. The project-specific PRDs include:

1. Notice of Intent (NOI);

2. Risk Assessment (Construction Site Sediment and Receiving Water Risk Determination);

3. Site Map;

4. Annual Fee;

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5. Signed Certification Statement (LRP Certification is provided electronically with SMARTS PRD submittal); and

6. SWPPP.

Site Maps can be found in Appendix B. A copy of the submitted PRDs shall also be kept in Appendix C along with the Waste Discharge Identification (WDID) confirmation.

1.3 SWPPP AVAILABILITY AND IMPLEMENTATION

The discharger shall make the SWPPP available at the construction site during working hours (see Section 7.5 of CSMP for working hours) while construction is occurring and shall be made available upon request by a State or Municipal inspector. When the original SWPPP is retained by a crewmember in a construction vehicle and is not currently at the construction site, current copies of the BMPs and map/drawing will be left with the field crew and the original SWPPP shall be made available via a request by radio/telephone. (CGP Section XIV.C)

The SWPPP shall be implemented concurrently with the start of ground-disturbing activities.

1.4 SWPPP AMENDMENTS

The SWPPP should be revised when:

If there is a General Permit violation.

When there is a reduction or increase in total disturbed acreage (General Permit Section Part C).

BMPs do not meet the objectives of reducing or eliminating pollutants in stormwater discharges.

Additionally, the SWPPP shall be amended when:

There is a change in construction or operations which may affect the discharge of pollutants to surface waters, groundwater(s), or a municipal separate storm sewer system

(MS4);

When there is a change in the project duration that changes the project’s risk level; or

When deemed necessary by the QSD. The QSD has determined that the changes listed in Table 1.1 can be field determined by the QSP. All other changes shall be made by the QSD as formal amendments to the SWPPP.

The following items shall be included in each amendment:

Who requested the amendment;

The location of proposed change;

The reason for change;

The original BMP proposed, if any; and

The new BMP proposed.

Amendment shall be logged at the front of the SWPPP and certification kept in Appendix D.

The SWPPP text shall be revised replaced, and/or hand annotated as necessary to properly

Sacramento Valley National Cemetery 6 convey the amendment. SWPPP amendments must be made by a QSD. The following changes have been designated by the QSD as "to be field determined” and constitute minor changes that the QSP may implement based on field conditions.

Table 1.1 List of Changes to be Field Determined

Candidate changes for field location or determination by QSP(1)

Check changes that can be field located or field determined by QSP

Increase quantity of an Erosion or Sediment Control Measure x

Relocate/Add stockpiles or stored materials x

Relocate or add toilets x

Relocate vehicle storage and/or fueling locations x

Relocate areas for waste storage x

Relocate water storage and/or water transfer location x

Changes to access points (entrance/exits) x

Change type of erosion or sediment control measure x

Changes to location of erosion or sediment control x

Minor changes to schedule or phases x

Changes in construction materials x

(1) Any field changes not identified for field location or field determination by QSP must be approved by QSD

1.5 RETENTION OF RECORDS

Paper or electronic records of documents required by this SWPPP shall be retained for a minimum of three years from the date generated or date submitted, whichever is later, for the following items:

Annual reports Chain of custody documentation Field measurement reports Laboratory reports Monitoring reports Photographs QA/QC records Rain gauge reports Sampling reports Site inspection reports Weather reports All other pertinent records

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These records shall be available at the Site until construction is complete. Records assisting in the determination of compliance with the General Permit shall be made available within a reasonable time, to the Regional Water Board, State Water Board or U.S. Environmental Protection Agency (EPA) upon request. Requests by the Regional Water Board for retention of records for a period longer than three years shall be adhered to.

1.6 REQUIRED NON-COMPLIANCE REPORTING

If a General Permit discharge violation occurs the QSP shall immediately notify the LRP. The LRP shall include information on the violation with the Annual Report. Corrective measures will be implemented immediately following identification of the discharge or written notice of non-compliance from the Regional Water Board. Discharges and corrective actions must be documented and include the following items:

The date, time, location, nature of operation and type of unauthorized discharge.

The cause or nature of the notice or order.

The control measures (BMPs) deployed before the discharge event, or prior to receiving notice or order.

The date of deployment and type of control measures (BMPs) deployed after the discharge event, or after receiving the notice or order, including additional measures installed or planned to reduce or prevent re-occurrence.

1.7 ANNUAL REPORT

The General Permit requires that permittees prepare, certify, and electronically submit an Annual Report no later than September 1st of each year. Reporting requirements are identified in Section XVI of the General Permit. Annual reports will be filed in SMARTS and in accordance with information required by the on-line forms.

1.8 CHANGES TO PERMIT COVERAGE

The General Permit allows for the reduction or increase of the total acreage covered under the General Permit when: a portion of the project is complete and/or conditions for termination of coverage have been met; when ownership of a portion of the project is purchased by a different entity; or when new acreage is added to the project.

Modified PRDs shall be filed electronically within 30 days of a reduction or increase in total disturbed area if a change in permit covered acreage is to be sought. The SWPPP shall be modified appropriately, shall be logged at the front of the SWPPP and cetrification of SWPPP amendments are to be kept in Appendix D. Updated PRDs submitted electronically via SMARTS can be found in Appendix E.

1.9 NOTICE OF TERMINATION

A Notice of Termination (NOT) must be submitted electronically by the LRP via SMARTS to terminate coverage under the General Permit. The NOT must include a final Site Map and representative photographs of the project site that demonstrate final stabilization has been achieved. The NOT shall be submitted within 90 days of completion of construction. The

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Regional Water Board will consider a construction site complete when the conditions of the General Permit, Section D have been met.

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Section 2 Project Information

2.1 PROJECT AND SITE DESCRIPTION

2.1.1 Site Description

The Project is located at the southwest corner of Midway Rd. and Batavia Rd. approximately 2 miles west of Batavia, California. The project site is shown on Figure 1, Vicinity Map in Appendix B. Proposed improvements will include installation of an internment area, irrigation system, access roads, parking, and site furnishings/signage.

2.1.2 Existing Conditions

The expansion area consists of farm fields and grassy areas that flow from the west-northwest to the east-northeast at a gradient of 0.5 percent. The site is approximately 60 to 69 feet above mean sea level.

2.1.3 Existing Drainage

The project area is situated within the Lower Sacramento Watershed (HUC: 18020109).

Watershed surface flows are primarily generated by local storm events. Most surface flows within the lower Sacramento Watershed either infiltrate into the pervious soil or evaporate.

During large rain events, runoff from the expansion area flows to a flat, shallow, ditch and outlets to Sweany Creek, south of the site.

A flood map search for FEMA Flood Insurance Rate Map (FIRM) panel ID numbers 06095C0200F (effective August 2, 2012) and 06095C0167F (effective August 2, 2012) confirms the proposed Project has been mapped by FEMA for flood zone hazards. The entire Sacramento Valley National Cemetery expansion tracts lie within Zone “X” which is determined to be outside of the 0.2% annual chance floodplain.

2.1.4 Geology and Groundwater

Borings performed by Terracon for the Sacramento Valley National Cemetery Phase 2 Geotechnical Engineering Report-August 16, 2017 show the subsurface materials encountered generally consisted of stiff lean sandy clays and medium dense to dense silty to clayey sands.

Groundwater was encountered in the borings at a depth of 9 ½ to 15 ½ feet while drilling and 7 ½ to 12 ½ feet twenty-four (24) hours after completion of drilling.

2.1.5 Project Description

The proposed project is an expansion of Sacramento Valley National Cemetery. The main components of this project will include parking, internment areas, cortege lanes, and irrigation system. In addition, this facility will include improvements such as access roads, drainage facilities, and small unmanned equipment enclosures.

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2.1.6 Developed Condition

Post-construction surface drainage will be conveyed to two basins, one proposed and one existing. The stormwater runoff will be captured on-site through the use of these extended detention basins. The basins are sized to hold a 96-hour 100-year rain event without discharging off-site. If the system capacity is exceeded, there is an overflow pipe on the south side of the southern basin that will discharge to Sweany Creek. The project is not expected to significantly affect the flow patterns of the existing drainage courses. Site topography, sub-drainage areas, and stormwater storage systems are shown in the preliminary site plan in Appendix B.

Table 2.1 Construction Site Estimates

Total site area 554 ac

Construction limits 94 ac

Percent impervious before construction 3.7 %

Percent impervious after construction 7.6 %

2.2 PERMITS AND GOVERNING DOCUMENTS

In addition to the General Permit, the following documents have been taken into account while preparing this SWPPP

Regional Water Board requirements

Basin Plan requirements

Contract Documents

Air Quality Regulations and Permits

Federal Endangered Species Act

State of California Endangered Species Act

Clean Water Act Section 401 Water Quality Certifications and 404 Permits

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2.3 STORMWATER RUN-ON FROM OFFSITE AREAS

Adjacent properties are the existing Sacramento Valley National Cemetery and a metal fabrication warehouse. It is expected that the stormwater generated from these sites to pond up against its respective facilities and since the offsite flow patterns will be unaltered, the off-site run-on will have negligible impacts to the project site.

The General Permit requires that temporary BMPs be implemented to direct offsite run-on away from disturbed areas through the use of runoff controls. The BMPs will be located as shown on the site map. The off-site drainage areas and associated stormwater conveyance facilities or BMPs are shown on the Site Map in Appendix B.

2.4 FINDINGS OF THE CONSTRUCTION SITE SEDIMENT AND

RECEIVING WATER RISK DETERMINATION

Part A

A construction site risk assessment has been performed for the project and the resultant risk level is Risk Level 2.

The risk level was determined through the use of site specific analysis. The risk level is based on project duration, location, proximity to impaired receiving waters and soil conditions. A copy of the Risk Level determination submitted on SMARTS with the PRDs is included in Appendix C.

Part B

Table 2.2 and Table 2.3 summarize the sediment and receiving water risk factors and document the sources of information used to derive the factors.

Table 2.2 Summary of Sediment Risk

RUSLE

Factor

Value Method for establishing value

R 141 USEPA online Rainfall Erosivity Factor Calculator for Small Construction Sites

K 0.24 SMARTS Risk Calculator

LS 0.52 SMARTS Risk Calculator

Total Predicted Sediment Loss (tons/acre) 17.72

Overall Sediment Risk Low Sediment Risk < 15 tons/ acre Medium Sediment Risk >= 15 and < 75 tons/acre High Sediment Risk >= 75 tons/acre

Low Medium High

Runoff from the project site will eventually flow to Sweany Creek.

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Table 2.3 Summary of Receiving Water Risk

Receiving Water Name 303(d) Listed for Sediment Related Pollutant(1)

TMDL for Sediment Related Pollutant(1)

Beneficial Uses of COLD, SPAWN, and

MIGRATORY(1)

Sweany Creek Yes No Yes No Yes No

Overall Receiving Water Risk Low High

(1) If yes is selected for any option the Receiving Water Risk is High

Risk Level 2 sites are subject to the narrative effluent limitations specified in the General Permit.

The narrative effluent limitations require stormwater discharges associated with construction activity to minimize or prevent pollutants in stormwater and authorized non-stormwater through the use of controls, structures, and best management practices. This SWPPP has been prepared to address Risk Level 2 requirements (General Permit Attachment C).

2.5 CONSTRUCTION SCHEDULE

The site sediment risk was determined based on construction taking place between September 28, 2018 and November 23, 2020. Modification or extension of the schedule (start and end dates) may affect risk determination and permit requirements. The LRP shall contact the QSD if the schedule changes during construction to address potential impact to the SWPPP. The estimated schedule for planned work can be found in Appendix F.

2.6 POTENTIAL CONSTRUCTION ACTIVITY AND POLLUTANT SOURCES

Appendix G includes a list of construction activities and associated materials that are anticipated to be used onsite. These activities and associated materials will or could potentially contribute pollutants, other than sediment, to stormwater runoff.

The anticipated activities and associated pollutants were used in Section 3 to select the Best Management Practices for the project. Location of anticipated pollutants and associated BMPs are show on the Site Map in Appendix B.

For sampling requirements for non-visible pollutants associated with construction activity please refer to Section 7.7.1. For a full and complete list of onsite pollutants, refer to the Material Safety Data Sheets (MSDS), which are retained onsite at the construction trailer.

2.7 IDENTIFICATION OF NON-STORMWATER DISCHARGES

Non-stormwater discharges consist of discharges which do not originate from precipitation events. The General Permit provides allowances for specified non-stormwater discharges that do not cause erosion or carry other pollutants.

Non-stormwater discharges into storm drainage systems or waterways, which are not authorized under the General Permit and listed in the SWPPP, or authorized under a separate NPDES permit, are prohibited.

Non-stormwater discharges that are authorized from this project site include the following:

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Water to control dust

These authorized non-stormwater discharges will be managed with the stormwater and non-stormwater BMPs described in Section 3 of this SWPPP and will be minimized by the QSP.

Activities at this site that may result in unauthorized non-stormwater discharges include:

Vehicle and equipment cleaning, fueling and maintenance operations;

Vehicle and equipment wash water;

Washout of equipment;

Slurries from concrete cutting and coring operations, PCC grinding or AC grinding operations;

Slurries from concrete or mortar mixing operations;

Wash water from cleaning painting equipment;

Runoff from dust-control applications of water;

Sanitary and septic wastes; and

Chemical leaks and/or spills of any kind including but not limited to petroleum, paints, cure compounds, etc.

Steps will be taken, including the implementation of appropriate BMPs, to ensure that unauthorized discharges are eliminated, controlled, disposed, or treated on-site.

Discharges of construction materials and wastes, such as fuel or paint, resulting from dumping, spills, or direct contact with rainwater or stormwater runoff, are also prohibited.

2.8 REQUIRED SITE MAP INFORMATION

The construction project’s Site Map(s) showing the project location, surface water boundaries, geographic features, construction site perimeter and general topography and other requirements identified in Attachment B of the General Permit is located in Appendix B. Table 2.5 identifies Map or Sheet Nos. where required elements are illustrated.

Table 2.5 Required Map Information

Included on Map/Plan Sheet

No. (1) Required Element

See Site Map The project’s surrounding area (vicinity)

See Site Map Site layout

See Site Map Construction site boundaries

See Site Map Drainage areas

See Site Map Discharge locations

See Site Map Sampling locations

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Table 2.5 Required Map Information

Included on Map/Plan Sheet

No. (1) Required Element

See Site Map Areas of soil disturbance (temporary or permanent)

See Site Map Active areas of soil disturbance (cut or fill)

See Site Map Locations of runoff BMPs

See Site Map Locations of erosion control BMPs

See Site Map Locations of sediment control BMPs

See Site Map ATS location (if applicable)

See Site Map Locations of sensitive habitats, watercourses, or other features which are not to be disturbed

See Site Map Locations of all post construction BMPs

See Site Map Waste storage areas

See Site Map Vehicle storage areas

See Site Map Material storage areas

See Site Map Entrance and Exits

See Site Map Fueling Locations

Notes: (1) Indicate maps or drawings that information is included on (e.g., Vicinity Map, Site Map, Drainage Plans, Grading Plans, Progress Maps, etc.)

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Section 3 Best Management Practices

3.1 SCHEDULE FOR BMP IMPLEMENTATION

Table 3.1 is a list of potential BMPs to be implemented during construction. The contractor shall make final determination of implemented BMPs. The SWPPP will be revised accordingly.

Table 3.1 BMP Implementation Schedule

BMP Implementation Duration

E ro si on

C tr ol

EC-2, Preservation of Existing Vegetation

Start of Construction Entirety of Project

EC-5, Soil Binders Start of Construction Entirety of Project

S ed im en t C on tr ol SE-1, Silt Fence Start of Construction Entirety of Project

SE-5, Fiber Rolls Start of Construction Entirety of Project

SE-7, Street Sweeping and Vacuuming

Start of Construction Entirety of Project

SE-10, Inlet Protection Start of Construction Entirety of Project

T ra ck in g C on tr ol TC-1, Stabilized Construction

Entrance/Exit Start of Construction Entirety of Project

TC-2, Stabilized Construction Roadway

Start of Construction Entirety of Project

W in d

E ro si

WE-1, Wind Erosion Control Start of Construction Entirety of Project

3.2 EROSION AND SEDIMENT CONTROL

Erosion and sediment controls are required by the General Permit to provide effective reduction or elimination of sediment related pollutants in stormwater discharges and authorized non-stormwater discharges from the Site. Applicable BMPs are identified in this section for erosion control, sediment control, tracking control, and wind erosion control.

3.2.1 Erosion Control

Erosion control, also referred to as soil stabilization, consists of source control measures that are designed to prevent soil particles from detaching and becoming transported in stormwater runoff. Erosion control BMPs protect the soil surface by covering and/or binding soil particles.

This construction project will implement the following practices to provide effective temporary and final erosion control during construction:

1. Preserve existing vegetation where required and when feasible.

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2. The area of soil disturbing operations shall be controlled such that the Contractor is able to implement erosion control BMPs quickly and effectively.

3. Stabilize non-active areas within 7 days of cessation of construction activities or sooner if stipulated by local requirements.

4. Control erosion in concentrated flow paths by applying erosion control blankets, check dams, erosion control seeding or alternate methods.

5. Prior to the completion of construction, apply permanent erosion control to remaining disturbed soil areas.

Sufficient erosion control materials shall be maintained onsite to allow implementation in conformance with this SWPPP.

The following temporary erosion control BMP selection table indicates the BMPs that shall be implemented to control erosion on the construction site. Fact Sheets for temporary erosion control BMPs are provided in Appendix H.

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Table 3.2 Temporary Erosion Control BMPs

CASQA

Fact Sheet

BMP Name Meets a

Minimum Requirement(1)

BMP Used If not used, state reason

YES NO

EC-1 Scheduling X

Project schedule is constrained by other environmental factors and will not be adjusted due to rainfall to meet project goals. Other BMPs will be used to prevent discharge of pollutants during rainfall events.

EC-2

Preservation of Existing Vegetation

X

EC-3 Hydraulic Mulch (2) X Not anticipated for project.

EC-4 Hydroseed (2) X Not anticipated for project.

EC-5 Soil Binders (2) X

EC-6 Straw Mulch (2) X Not anticipated for project.

EC-7 Geotextiles and Mats (2) X Not anticipated for project.

EC-8 Wood Mulching (2) X Not anticipated for project.

EC-9 Earth Dike and Drainage Swales (3) X Not anticipated for project.

EC-10 Velocity Dissipation Devices X Not anticipated for project.

EC-11 Slope Drains X Not anticipated for project.

EC-12 Stream Bank Stabilization X Not anticipated for project.

EC-14 Compost Blankets (2) X Not anticipated for project.

EC-15 Soil Preparation-Roughening X Not anticipated for project.

EC-16 Non-Vegetated Stabilization (2) X Not anticipated for project.

WE-1 Wind Erosion Control X

Alternate BMPs Used: If used, state reason:

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Table 3.2 Temporary Erosion Control BMPs

CASQA

Fact Sheet

BMP Name Meets a

Minimum Requirement(1)

BMP Used If not used, state reason

YES NO

(1) Applicability to a specific project shall be determined by the QSD.

(2) The QSD shall ensure implementation of one of the minimum measures listed or a combination thereof to achieve and maintain the Risk Level requirements.

(3) Run-on from offsite shall be directed away from all disturbed areas, diversion of offsite flows may require design/analysis by a licensed civil engineer and/or additional environmental permitting

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These temporary erosion control BMPs shall be implemented in conformance with the following guidelines and as outlined in the BMP Factsheets provided in Appendix H. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets.

Preservation of Existing Vegetation

Vegetation not within construction footprint will be preserved per the site plans and per CASQA BMP handbook fact sheet.

Soil Binders

Soil binders will be placed on disturbed soil during the rainy season if permanent soil stabilization cannot be accomplished prior to an anticipated rainfall event and per CASQA BMP handbook fact sheet.

Wind Erosion Control

Dust control will be implemented in the form of watering open soils when dust is likely to be generated. Stockpiles will be watered until a visible crust forms. If watering is not a sufficient dust suppressant, stockpiles will be treated with a palliative and/or covered to minimize dust generation.

3.2.2 Sediment Controls

Sediment controls are temporary or permanent structural measures that are intended to complement the selected erosion control measures and reduce sediment discharges from active construction areas. Sediment controls are designed to intercept and settle out soil particles that have been detached and transported by the force of water.

The following sediment control BMP selection table indicates the BMPs that shall be implemented to control sediment on the construction site. Fact Sheets for temporary sediment control BMPs are provided in Appendix H.

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Table 3.3 Temporary Sediment Control BMPs

CASQA

Fact Sheet

BMP Name Meets a

Minimum Requirement(1)

BMP used If not used, state reason

YES NO

SE-1 Silt Fence (2) (3) X

SE-2 Sediment Basin X Not anticipated for project.

SE-3 Sediment Trap X Not anticipated for project.

SE-4 Check Dams X Not anticipated for project.

SE-5 Fiber Rolls (2)(3) X

SE-6 Gravel Bag Berm (3) X Not anticipated for project.

SE-7 Street Sweeping X

SE-8 Sandbag Barrier X Not anticipated for project.

SE-9 Straw Bale Barrier X Not anticipated for project.

SE-10 Storm Drain Inlet Protection (2)(3) X Not anticipated for project.

SE-11 ATS X Not anticipated for project.

SE-12 Manufactured Linear Sediment Controls X Not anticipated for project.

SE-13 Compost Sock and Berm (3) X Not anticipated for project.

SE-14 Biofilter Bags (3) X Not anticipated for project.

TC-1 Stabilized Construction Entrance and Exit X

TC-2 Stabilized Construction Roadway X

TC-3 Entrance Outlet Tire Wash X Not anticipated for project.

(1) Applicability to a specific project shall be determined by the QSD

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Table 3.3 Temporary Sediment Control BMPs

CASQA

Fact Sheet

BMP Name Meets a

Minimum Requirement(1)

BMP used If not used, state reason

YES NO

(2) The QSD shall ensure implementation of one of the minimum measures listed or a combination thereof to achieve and maintain the Risk Level requirements (3)Risk Level 2 &3 shall provide linear sediment control along toe of slope, face of slope, and at the grade breaks of exposed slope

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These temporary sediment control BMPs shall be implemented in conformance with the following guidelines and in accordance with the BMP Fact Sheets provided in Appendix H. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets.

Silt Fence/Fiber Rolls

Silt fence will be installed on downstream edge of project per the site plans and per CASQA BMP handbook fact sheet.

Street Sweeping

Street sweeping by hand, and /or washing roads with water will be used if visible tracking occurs from the construction site. Mechanical street sweeping may also be used during certain activities, such as import of soil, or as deemed necessary by the QSP.

Stabilized Construction Entrance and Exit

Construction entrances and exits will have stabilization devices installed per the site plans and per CASQA BMP handbook fact sheet.

Stabilized Construction Roadway

Construction roadways will be stabilized by watering and/or soil binders or cover material as necessary to prevent discharge of pollutants per the site plans and per CASQA BMP handbook fact sheet.

3.3 NON-STORMWATER CONTROLS AND WASTE AND MATERIALS

MANAGEMENT

3.3.1 Non-Stormwater Controls

Non-stormwater discharges into storm drainage systems or waterways, which are not authorized under the General Permit, are prohibited. Non-stormwater discharges for which a separate NPDES permit is required by the local Regional Water Board are prohibited unless coverage under the separate NPDES permit has been obtained for the discharge. The selection of non-stormwater BMPs is based on the list of construction activities with a potential for non-stormwater discharges identified in Section 2.7 of this SWPPP.

The following non-stormwater control BMP selection table indicates the BMPs that shall be implemented to control sediment on the construction site. Fact Sheets for temporary non-stormwater control BMPs are provided in Appendix H.

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Table 3.4 Temporary Non-Stormwater BMPs

CASQA Fact Sheet

BMP Name Meets a

Minimum Requirement(1)

BMP used If not used, state reason

YES NO

NS-1 Water Conservation Practices X

NS-2 Dewatering Operation X Groundwater table is below excavation depths.

NS-3 Paving and Grinding Operation X

NS-4 Temporary Stream Crossing X No streams cross the project.

NS-5 Clear Water Diversion X Not applicable to project

NS-6 Illicit Connection/Discharge X X

NS-7 Potable Water/Irrigation X

NS-8 Vehicle and Equipment Cleaning X

NS-9 Vehicle and Equipment Fueling X

NS-10 Vehicle and Equipment Maintenance X

NS-11 Pile Driving Operation X Not applicable to project.

NS-12 Concrete Curing X

NS-13 Concrete Finishing X

NS-14 Material and Equipment Use Over Water X No work planned within/over a water course.

NS-15 Demolition Removal Adjacent to Water X No work planned within/over a water course.

NS-16 Temporary Batch Plants X All materials will be imported.

(1) Applicability to a specific project shall be determined by the QSD

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Non-stormwater BMPs shall be implemented in conformance with the following guidelines and in accordance with the BMP Fact Sheets provided in Appendix H. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets.

Water Conservation Practices

Water use will be minimized. Water used for dust control will be minimized so as to not produce runoff or standing water. Water used for other purposes will be conserved and its release prevented. Water conservation will be conducted in accordance with the CASQA BMP handbook fact sheet.

Vehicle and Equipment Cleaning

Vehicles and equipment cleaning will take place so as to not discharge pollutants from the site during operations and during rainfall events. Cleaning water will be fully contained and removed from the site and not allowed to discharge or pond at the site. Vehicle and equipment cleaning will be conducted in accordance with the CASQA BMP handbook fact sheet.

Vehicle and Equipment Fueling

Vehicle and equipment fueling will be conducted to prevent spills and discharges of pollutants from the site during operations and during rainfall events. Fueling must be performed on level-grade areas. Drip pans or absorbent pads shall be used during fueling, unless the fueling is performed over an impermeable surface in a dedicated fueling area. Spill containment and sorbent kits shall be available at the fueling area. Should a spill occur, it will be immediately cleaned up and, if reportable quantities of fuels are spilled, reporting will be done in accordance with all applicable laws and regulations. All local ordinances, codes, laws, and regulations will be followed for on-site fueling operations. Fueling will be conducted in accordance with the CASQA BMP handbook fact sheet.

Vehicle and Equipment Maintenance

Vehicle and equipment maintenance will be conducted to prevent spills and discharges of pollutants from the site during operations and during rainfall events. Drip pans or absorbent pads shall be used during vehicle maintenance work that involves fluids, unless the maintenance work is performed over an impermeable surface in a dedicated maintenance area. Spill containment and sorbent kits shall be available at all maintenance areas. Should a spill occur, it will be immediately cleaned up and, if reportable quantities of fuels are spilled, reporting will be done in accordance with all applicable laws and regulations. All local ordinances, codes, laws, and regulations will be followed for on-site fueling operations. Fueling will be conducted in accordance with the CASQA BMP handbook fact sheet.

Concrete Curing

Concrete curing operations will be done in a manner to prevent discharge of pollutants from the site during operations or during a rainfall event. Work will be done to prevent overspray, minimize drift, and prevent spills of compounds. Cure water will be contained and not discharged from the site. Should spills of curing compounds or cure water occur, it will be cleaned up immediately. Temporary containment will be placed around curing areas, as necessary, to prevent releases of curing compounds or water. Curing will be conducted in accordance with the CASQA BMP handbook fact sheet.

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Concrete Finishing

Concrete finishing will be done in a manner to prevent discharge of pollutants from the site during operations or during a rainfall event. Work will be done to prevent overspray or losses of water, blasting compounds, sanding compounds, or other materials used to finish concrete. All materials used will be contained on-site and removed or covered at the end of each work day.

Water used in the concrete finishing process will be contained and recycled or disposed of.

Water used for concrete finishing activities will not be allowed to discharge from the site. Dust, drift, or aerial discharges during concrete finishing operations will be minimized through work practices. If dust or other aerial discharges are observed to leave the site, concrete finishing areas will be contained with appropriate screening to prevent aerial discharges. Concrete finishing will be conducted in accordance with the CASQA BMP handbook fact sheet.

3.3.2 Materials Management and Waste Management

Materials management control practices consist of implementing procedural and structural BMPs for handling, storing and using construction materials to prevent the release of those materials into stormwater discharges. The amount and type of construction materials to be utilized at the Site will depend upon the type of construction and the length of the construction period. The materials may be used continuously, such as fuel for vehicles and equipment, or the materials may be used for a discrete period, such as soil binders for temporary stabilization.

Waste management consist of implementing procedural and structural BMPs for handling, storing and ensuring proper disposal of wastes to prevent the release of those wastes into stormwater discharges.

Materials and waste management pollution control BMPs shall be implemented to minimize stormwater contact with construction materials, wastes and service areas; and to prevent materials and wastes from being discharged off-site. The primary mechanisms for stormwater contact that shall be addressed include:

Direct contact with precipitation

Contact with stormwater run-on and runoff

Wind dispersion of loose materials

Direct discharge to the storm drain system through spills or dumping

Extended contact with some materials and wastes, such as asphalt cold mix and treated wood products, which can leach pollutants into stormwater.

A list of construction activities is provided in Section 2.6. The following Materials and Waste Management BMP selection table indicates the BMPs that shall be implemented to handle materials and control construction site wastes associated with these construction activities. Fact Sheets for Materials and Waste Management BMPs are provided in Appendix H.

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Table 3.5 Temporary Materials Management BMPs

CASQA Fact Sheet

BMP Name Meets a

Minimum Requirement(1)

BMP used If not used, state reason

YES NO

WM-01 Material Delivery and Storage X

WM-02 Material Use X

WM-03 Stockpile Management X

WM-04 Spill Prevention and Control X

WM-05 Solid Waste Management X

WM-06 Hazardous Waste Management X Hazardous waste is not expected to be generated during construction activities.

WM-07

Contaminated Soil Management

X The phase I environmental site assessment found no recognized environmental conditions. Contaminated soils are not anticipated.

WM-08 Concrete Waste Management X

WM-09

Sanitary-Septic Waste Management

X

WM-10 Liquid Waste Management X Not anticipated for project. .

(1) Applicability to a specific project shall be determined by the QSD.

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Material management BMPs shall be implemented in conformance with the following guidelines and in accordance with the BMP Fact Sheets provided in Appendix H. If there is a conflict between documents, the Site Map will prevail over narrative in the body of the SWPPP or guidance in the BMP Fact Sheets. Site specific details in the Site Map prevail over standard details included in the Site Map. The narrative in the body of the SWPPP prevails over guidance in the BMP Fact Sheets.

Material Delivery and Storage

Materials will be delivered to and stored at a defined material storage facility at the site. The material storage facility will have berms constructed on three sides that prevent the discharge of spilled materials. The entry way will be at a higher elevation than the other three sides of the material storage area. Materials will be placed in water tight sheds or will be covered when not being used. When rainfall is imminent, all sheds will be closed and materials covered with plastic sheeting. Material Delivery and Storage will be conducted in accordance with the CASQA BMP handbook fact sheet.

Material Use

Material use during construction will be in a manner to prevent discharge of pollutants during operations and during rainfall events. Materials will be applied outside of rainfall events as practicable. Liquid materials will not be applied during rainfall events under any circumstances.

Rainfall will be monitored and liquid materials will not be applied within 24 hours of anticipated rainfall events, if possible. Materials will be used in a manner to minimize waste. Waste produced will be collected immediately and contained in appropriate waste disposal containers as described in waste management. Material use will be conducted in accordance with the CASQA BMP handbook fact sheet.

Stockpile Management

Stockpiles will be managed in a manner to prevent discharger of pollutants during operations and during rainfall events. Creation of stockpiles will be minimized as practicable. Stockpiles that are created will be covered overnight and when they are not to be accessed during a work day.

Rainfall will be monitored and stockpiles will be covered within 24 hours of an anticipated rainfall event. Stockpile management will be conducted in accordance with the CASQA BMP handbook fact sheet.

Spill Prevention and Control

Hazardous materials, fuels, and oils will be used in a manner to prevent spills or releases of these materials. Fuels, oils, and hazardous materials will be stored within secondary containment within covered containers. During use, containment will be placed around the area of their use. If it is not practicably to place containment around all 4 sides of the area of use, containment will be placed on the 3 lowest grade sides of the area of use. Spill containment and cleanup kits will be kept within easy reach of all areas where hazardous materials, fuels, or oils are stored or used.

Should a spill occur, it will be cleaned up immediately, along with any soils or other materials that become contaminated from the release. Wastes will be disposed of in accordance with applicable laws and regulations. Spill Prevention and Control will be conducted in accordance with the CASQA BMP handbook fact sheet.

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Solid Waste Management

Solid waste will be managed to prevent releases during operations and during rainfall events.

Solid waste production will be minimized, as practicable. Solid waste that is produced will be immediately placed in solid waste receptacles that have covers. Receptacles will be covered overnight, within 24 hours of a rainfall event, during rainfall events, and on days when no work is occurring that require the use of the trash receptacle. Solid waste that is released will be retrieved and placed in solid waste receptacles.