port of stockton development standards plan 01jun09 revisi…...1.1 the function of the storm water...

Port of Stockton

Storm Water Development Standards Plan

June 1, 2009

Exhibit D - Port's DSP

Port of Stockton

Development Standards Plan

Revised June 1, 2009

Reviewed by Jeff Wingfield, Environmental Manager and Jeff Kaspar, Deputy Port Director of Properties and Environmental on November 17, 2005

Approved by the Central Valley Regional Water Quality Control Board on November 17, 2005

Implemented on February 17, 2006


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Table of Contents 1 Purpose and Goals of the Port of Stockton Storm Water Development Standards

............................................................................................................................. 1 1.1 The Function of the Storm Water Development Standards Plan .................................................... 1

1.2 Regulatory Basis............................................................................................................................. 2

1.3 Storm Water Management and Infrastructure Planning .................................................................. 2

1.3.1 West Complex:................................................................................................................................ 2

1.3.2 East Complex North of A Street: ..................................................................................................... 3

1.3.3 East Complex South of A Street: .................................................................................................... 3

1.4 Consistency and Equality for the Port’s Tenants ............................................................................ 4

1.5 Water Quality Protection ................................................................................................................. 5

2 The Implementation Process................................................................................ 6 2.1 Applicability ..................................................................................................................................... 6

2.1.1 New Development........................................................................................................................... 6

2.1.2 Redevelopment............................................................................................................................... 7

2.2 Project Notification Requirements................................................................................................... 7

2.2.1 CEQA Questionnaire ...................................................................................................................... 8

2.2.2 Port of Stockton Construction Management Fact Sheet ................................................................. 8

2.3 Project Design Criteria .................................................................................................................... 9

2.3.1 Minimum BMPs that Apply to All New Development and Redevelopment...................................... 9

2.3.2 Minimum BMPs that Apply to Applicable New Development and Redevelopment Occurring in Specific Drainage Zones at the Port of Stockton ........................................................ 9

2.3.3 Identification of Applicable New Development Projects and the Associated Pollutants of Concern ........................................................................................................................................ 11

2.3.4 Numeric Sizing Criteria for Treatment Control Measures.............................................................. 14

2.3.5 Infiltration and Groundwater Protection Measures........................................................................ 15

2.3.6 Downstream Erosion and Protection Measures............................................................................ 15

2.3.7 Low Impact Development (LID)..................................................................................................... 15

2.4 Approval Process.......................................................................................................................... 16

2.4.1 Project Notification ........................................................................................................................ 18

2.4.2 Project Design Phase ................................................................................................................... 18

2.4.3 Submittal and Plan Review Phase ................................................................................................ 18

2.4.4 Approval Phase............................................................................................................................. 19

2.5 Inspection Process........................................................................................................................ 19

2.5.1 Prior to Construction ..................................................................................................................... 19

2.5.2 During Construction ...................................................................................................................... 19

2.5.3 Post Construction.......................................................................................................................... 20


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2.5.4 During Normal Operations ............................................................................................................ 20

3 Approved BMPs ................................................................................................. 21 3.1 Mandatory Minimum BMPs........................................................................................................... 21

3.1.1 Storm Drain Message and Signage (SD-13)................................................................................. 21

3.1.2 Roof Drain Design (SD-11) ........................................................................................................... 21

3.1.3 Outdoor Material Storage Area Design (SD-34) ........................................................................... 22

3.1.4 Outdoor Trash Storage Area Design (SD-32) ............................................................................... 22

3.1.5 Outdoor Loading / Unloading Dock Area Design (SD-31)............................................................. 22

3.1.6 Outdoor Repair / Maintenance Bay Design (SD-31 and SD-35) ................................................... 22

3.1.7 Outdoor Vehicle / Equipment / Accessory Washing Area Design (SD-33).................................... 22

3.1.8 Fueling Area Design (SD-30) ........................................................................................................ 23

3.1.9 Spill Control and Response Measures (POS-01).......................................................................... 23

3.2 Drainage Zone Specific BMPs ...................................................................................................... 23

3.2.1 West Complex............................................................................................................................... 23

3.2.2 East Complex – North of “A” Street............................................................................................... 24

3.2.3 East Complex – South of A Street ................................................................................................ 25

3.3 Treatment Control Options for State of California Priority Categories and Port Specified Industries...................................................................................................................................................... 25

3.3.1 Vegetated Buffer Strips (TC-31).................................................................................................... 25

3.3.2 Vegetated Swales (TC-30)............................................................................................................ 25

3.3.3 Extended Detention Basin (TC-22) ............................................................................................... 26

3.3.4 Wet Pond (TC-20)......................................................................................................................... 26

3.3.5 Constructed Wetland (TC-20 and MP-20)..................................................................................... 26

3.3.6 Detention Basin / Sand Filter (TC-40) ........................................................................................... 27

3.3.7 Porous Pavement Detention (TC-40 and SD-20).......................................................................... 27

3.3.8 Porous Landscape Detention (TC-32 and TC-40) ........................................................................ 27

3.3.9 Infiltration Basin (TC-11) ............................................................................................................... 27

3.3.10 Infiltration Trench (TC-10)............................................................................................................. 28

3.3.11 Media Filter (TC-40 and MP-40) ................................................................................................... 28

3.3.12 Retention / Irrigation (TC-12) ........................................................................................................ 28

3.3.13 Alternative Control Measures and Proprietary Control Measures (POS-99) ................................. 28

4 Development Standards Plan Approval and Accessibility .................................. 29


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Appendices

Appendix A – Project Notification Form

Appendix B – CEQA Questionnaire

Appendix C – Construction Management Fact Sheet

Appendix D – Site-Specific Development Standards Plan Template

Appendix E – Maintenance Agreement Form

Revision Record Revision Date

Description of Revisions Revisions Made by Approved by

3/01/2005 Original Draft WGR Southwest, Inc. Jeff Kaspar

4/17/2006 Revised with changes in how the City of Stockton interfaces with the process.

WGR Southwest, Inc. Jeff Wingfield

5/30/2007 Revised construction management fact sheet to replace construction management work plan.


6/01/2009 Revisions made in response to USEPA comments.


Distribution

Port of Stockton Departments:

• Environmental

• Maintenance & Construction

• Police

• Properties

• Operations

Port Tenants

Central Valley Regional Water Quality Control Board


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Port of Stockton Development Standards Plan

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1 Purpose and Goals of the Port of Stockton Storm Water Development Standards The Port of Stockton has developed this Storm Water Development Standards Plan (DSP) in response to the requirements contained in its Municipal Separate Storm Water Sewer System (MS4) NPDES Permit. However, this DSP document also will assist the Port to accomplish the following objectives:

To assist the Port in the gradual development of its master plan for the overall management and infrastructure for storm water conveyance and control.

To provide well-defined and consistent storm water development standards and an equitable review and approval process of proposed development for the Port’s existing and future tenants.

To protect the quality of the storm water runoff and the receiving waters that surrounds the Port.

The following describes in more detail the purpose and goals of this DSP.

1.1 The Function of the Storm Water Development Standards Plan The following six statements summarize the function of the DSP:

Summary of the Port of Stockton’s Development Standards Plan

Initiated by the initial CEQA and regulatory consultation with applicants.

Implemented during the project development phase and verified by the Port Environmental proposed project review phase.

Identifies minimum, drainage zone specific, and activity specific best management practices (BMPs)

Incorporates the California Stormwater Quality Association (CASQA) approved design standards

Involves the review of the developer-submitted site-specific Development Standards Plan and proposed control measures and approval by the Port staff Properties and Environmental Departments.

Integrates the Port’s overall Storm Water Management Plan



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1.2 Regulatory Basis On October 5, 2000, the California State Water Resources Control Board (State Board) adopted Order WQ 2000-11, which set as a precedent the requirement to utilize Standard Urban Storm Water Mitigation Plans (SUSMPs, later referred to as Development Standards). The SUSMPs were initially adopted by the Los Angeles Regional Water Quality Control Board (RWQCB) to require treatment controls for new development and significant redevelopment. However, recognizing that the decision included significant legal or policy determinations that are likely to recur (Gov. Code 11425.60), the Central Valley RWQCB in concurrence with the State Board has decided to be consistent with applicable portions of the State Board’s decision and include Development Standards requirements in the MS4 permits. The Port of Stockton’s current MS4 permit (R5-2004-0136) states that the Port must prepare and submit to the Central Valley RWQCB a Development Standards Plan by March 1, 2005 and must implement that plan within three months of its approval. The DSP was approved by the RWQCB on November 19, 2005 and became effective on February 17, 2006.

1.3 Storm Water Management and Infrastructure Planning The primary purpose of the DSP is to incorporate into the design of facilities permanent control measures to mitigate pollutants in storm water and to maintain post-development runoff rates to as close to the pre-development rates as possible. Other purposes of this DSP is to assist the Port in the overall management and infrastructure planning for handling of storm water runoff to prevent localized flooding, erosion of surfaces, sedimentation deposits, and to protect receiving water quality. Therefore, the BMPs specified in this DSP, not only address water quality, but also form a part of the overall storm water management strategy of the Port. The Port can be divided into three distinct drainage zones. They are as follows:

1.3.1 West Complex: The Port of Stockton West Complex is located on Rough and Ready Island. This area is populated predominately by light industry, commercial-related businesses, agriculture, and undeveloped land. Storm water runoff occurs mostly by surface flow via open culverts and ditches and is discharged from a pump station to the adjacent Burns Cutoff, a part of the San Joaquin River system.

Surface runoff flows to this point where it is pumped to the Burns Cutoff



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1.3.2 East Complex North of A Street: The Port of Stockton’s East Complex is divided into two separate drainage zones. These zones are roughly separated by “A” Street. The area north of “A” Street, for the most part, drains directly to the Stockton Deep Water Channel through a series of storm water collection basins, drains, piping, and outfalls. Outfalls D2, D4, D10, and D11 are shown on the figure below.

1.3.3 East Complex South of A Street: The area south of “A” Street for the most part, drains to the Port of Stockton storm water retention basin through a series of storm water collection basins, culverts and ditches. Storm water is not discharged from the retention basin until a high level is reached. When a high level is reached, the Port pumps retention basin water to the adjacent San Joaquin River.

Each of the three above-referenced drainage zones has unique characteristics and features that present drainage zone-specific benefits and potential problems concerning the volume, rate, and quality of storm water runoff. Therefore, this DSP specifies BMP requirements that are specific to each drainage zone and assist the Port in managing its storm water runoff in a safe and efficient manner.

D4

D10

D11D2A Street

Storm Water Retention Basin



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1.4 Consistency and Equality for the Port’s Tenants The Port of Stockton desires to be fair and equitable with all of its tenants. Because each tenant is valued, the Port has established development standards that can be consistently applied to every tenant. This DSP is a way of establishing a consistent standard and process to be followed by every development and significant redevelopment. However, we also understand that it is extremely difficult, if not impossible; to have a “one-size” fits all standard. The Port has attempted to incorporate standards that will be useable by the majority of the developers, but the process also allows a certain customizing of standards in a manner that is fair and equitable to other Port tenants. The measures that are built into the process to allow flexibility include the following:

When sizing a treatment control BMP, the State of California allows for volume-based or a flow-based sizing criteria to be used. However, the State also allows for equivalent criteria to be used. For example, a developer may propose a performance-based criterion. In other words, a BMP is proposed that is guaranteed to meet the water quality objectives and is so demonstrated by analytical testing.

The Port is incorporating the CASQA control measures into this DSP by reference, which provides a wide variety of approved and State of California recognized treatment control BMPs that may be considered by the developer for incorporation into the design. Notwithstanding, should the developer want to use a BMP that is not specified in detail, as described in BMP standard POS-99 (refer to page 27 for more information), the developer may propose an alternative control measure that meets the volume, flow, or equivalent sizing criteria.

Certain projects will fall under the DSP requirements, but the developer may argue that the DSP requirements are not logical and provide no real benefit to the Port’s management of storm water and the water quality objectives. In those rare occasions, the developer has an appeal option. The developer may appeal the DSP requirements to the Environmental Manager who will determine if the appeal has merit. If the appeal has merit, the Port Environmental Manager will present the appeal in a public hearing format to the Port of Stockton Commissioners. During the hearing and comment period, other Port tenants and developers will have an opportunity to comment on the proposed deviation from the DSP. This public hearing will be a part of the CEQA process and will result in a ruling by the Commissioners.



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1.5 Water Quality Protection The Port of Stockton, as a member of this community, is very concerned and committed to protecting the water quality of our neighboring Delta and waterways. Not only is the Port committed to it as a responsible member of the community, but also the Port is committed to that goal by specific language in the storm water permit.

The Port of Stockton’s MS4 permit states the following:

“Discharges from storm sewers in a manner causing, or threatening to cause, a condition of pollution, contamination, or nuisance in the waters of the state are prohibited.”

“Discharges from storm sewers that cause or contribute to the violation of applicable water quality standards are prohibited.”

“Discharges from storm sewers containing pollutants that have not been reduced to the Maximum Extent Practicable (MEP) are prohibited. Because activities at the Port are predominantly industrial, this Order [permit] defines the MEP discharges standard to be equivalent to Best Available Technology Economically Achievable (BAT) and Best Conventional Technology Economically Achievable (BCT) discharge standards that are typically established for industrial storm water discharges.”

As mentioned in Section 1.2, this DSP is a mandated requirement of the Port’s permit and must require BMPs of developers that meet the above-referenced water quality objectives. For the Port, the RWQCB has defined the MEP to equal BAT and BCT.

Definitions

Best Available Technology Economically Achievable (BAT)

Technology-based standard established by the Clean Water Act (CWA) as the most appropriate means available on a national basis for controlling the direct discharge of toxic and nonconventional pollutants to navigable waters. BAT effluent limitations guidelines, in general, represent the best existing performance of treatment technologies that are economically achievable within an industrial point source category or subcategory.

Best Conventional Pollutant Control Technology (BCT)

Technology-based standard for the discharge from existing industrial point sources of conventional pollutants including BOD, TSS, fecal coliform, pH, oil and grease. The BCT is established in light of a two-part "cost reasonableness" test which compares the cost for an industry to reduce its pollutant discharge with the cost to a POTW for similar levels of reduction of a pollutant loading. The second test examines the cost-effectiveness of additional industrial treatment beyond BPT. EPA must find limits which are reasonable under both tests before establishing them as BCT.



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2 The Implementation Process Implementation of the Port’s Development Standards involves the following five general steps:

• Determination of the applicability of the DSP to the developer / redeveloper;

• Notification of the proposed project to the Port of Stockton;

• Identification of the BMP requirements and sizing criteria and incorporation into the project design;

• Approval process of the proposed project design; and

• Confirmation of the BMP installation and on-going maintenance through an inspection program

2.1 Applicability All new development and qualifying “significant redevelopment” will be subject to at least the minimum BMPs identified in Section 3.1 of this DSP. However, depending upon the nature and location of the development, other BMPs may also apply to the development or redevelopment project. The following defines the applicability of this plan to new development and “significant redevelopment”.

2.1.1 New Development “New development” includes all new construction on a vacant property; new construction after a complete demolition; and new construction or a tenant improvement that results in a change-of-use.

All new development will be required to implement minimum BMPs that are common industry-accepted design practices, which are not overly burdensome and do not involve large capital expenditures. These minimum BMPS are listed in Section 3.1 of this plan.

In the Port’s MS4 permit, certain types of developments have been identified by the State of California as “Priority Categories”. In addition to the minimum BMPs, developments falling under these categories are required to implement treatment controls that are identified in Section 3.2 for the drainage zone corresponding to the development and select and properly size one or more of the treatment controls listed in Section 3.3.

The Port has identified certain industrial activities that also must implement the treatment controls for any new development. These industrial activities are identified in Section 2.3.3.2 of this plan. As with the priority categories, new developments for any of the listed industrial activities must implement treatment controls that are identified in Section 3.2 for the drainage zone corresponding to the development, and select and properly size one or more of the treatment controls listed in Section 3.3.



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2.1.2 Redevelopment The Port’s development standards apply to all significant redevelopment projects falling under the identified “Priority Categories” listed in Section 2.3.3.1 of this plan and to the industrial activities identified in Section 2.3.3.2 of this plan. “Significant redevelopment” is defined by the following:

Significant redevelopment does not include replacement of impervious surfaces that is a part of routine maintenance, such as the repair and/or replacement of an asphalt parking lot.

2.2 Project Notification Requirements The Port of Stockton’s tenant lease agreement, the California Environmental Quality Act (CEQA), and the Port’s MS4 permit all require that the Port be notified prior to commencement of any development or redevelopment. All proposed projects, regardless of origin, require the completion and submittal to the Environmental Department of a Port Project Notification Form (Appendix A). After reviewing the Project Notification Form, the Environmental Department may also require the developer to submit a CEQA Questionnaire (Appendix B) and a Construction Management Fact Sheet (Appendix C).

“Significant Redevelopment” is defined as the creation or addition of at least 5,000 sq. ft. of impervious surfaces on an already developed site. It includes, but is not limited to: expansion of a building footprint; replacement of a structure; replacement of an impervious surface; and land-disturbing activities related to structural or impervious surfaces.

Port of Stockton Tenant Lease Agreement

New Improvements: Tenant may not construct or otherwise make new improvements on any part or all of the Premises, nor demolish, remove, replace, alter, relocate, reconstruct or add to any existing improvements in whole or in part, nor modify or change the contour or grade, or both, of the land, without the prior written consent of the Port.



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2.2.1 CEQA Questionnaire In the event that the project is complex enough and poses potential environmental impacts, prior to commencing any new development project or significant redevelopment project, the developer/tenant must complete a CEQA Questionnaire form and submit it to the Port of Stockton Environmental Department. The form is included in Appendix B of this plan and is available from the Port of Stockton Environmental Department.

Once the CEQA Questionnaire is submitted, it will begin the CEQA review process described in Section 2.4.1 of this plan. Development work cannot begin until the CEQA process is complete and the Port has granted approval.

2.2.2 Port of Stockton Construction Management Fact Sheet As specified in the Port’s Storm Water Management Plan and required by the MS4 permit, the Port of Stockton has implemented a construction management program to control the storm water runoff from construction areas one acre or greater. Any entity performing construction that is exposed to storm water on the Port property is required to complete and submit to the Environmental Department a Construction Management Fact Sheet regardless of the size or extent of the construction.

A copy of the Construction Management Fact Sheet is included in Appendix C of this plan.

For More Information or to Submit the Questionnaire Contact …

Rita Koehnen Environmental Coordinator Port of Stockton P.O. Box 2089 Stockton, CA 95201 [email protected] (209) 946-0246

Soil disturbing activity …

Includes clearing, grading, disturbances to the ground such as stockpiling, or excavation. Construction activity does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility, nor does it include emergency construction activities required to protect public health and safety.



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2.3 Project Design Criteria Every new development and significant redevelopment is required to incorporate into the final design the applicable standards listed below prior to completing the approval process described in Section 2.4 of this plan. These standards include the minimum BMPs, drainage zone-specific BMPs, and treatment control measures. The standards also include sizing criteria for treatment control measures and requirements for groundwater and downstream erosion protection.

2.3.1 Minimum BMPs that Apply to All New Development and Redevelopment

The Port is requiring that minimum BMPs be required of all new development and significant redevelopment projects. All of the BMPs must be incorporated into the development / redevelopment design as they may be applicable to the proposed project. Refer to Section 3.1 for a list and brief description of the minimum BMPs.

2.3.2 Minimum BMPs that Apply to Applicable New Development and Redevelopment Occurring in Specific Drainage Zones at the Port of Stockton

As described in Section 1.3 of this plan, the Port has three distinct drainage zones. Each of these zones has unique drainage characteristics and challenges. In order to protect water quality and to address concerns with storm water runoff management of each of these zones, the Port is specifying BMPs specific to each drainage zone for applicable new development and significant redevelopment. Applicable new development includes development of any of the State-specified Priority Categories and the Port of Stockton-specified industrial activities referenced in Section 2.3.3. The required BMPs are listed and described in Section 3.2 of this plan. The following is the rationale for the Port’s BMP selection for these drainage zones.

For Additional BMP Detail Refer to the Following Reference:

CASQA Storm Water BMP Development & Redevelopment Handbook

http://www.cabmphandbooks.com/Development.asp



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2.3.2.1 West Complex The West Complex is unique from the East Complex in the type of tenants and activities, the amount of natural / undeveloped areas, and the way that storm water runoff is managed.

The tenants and activities at the West Complex tend to be more commercial and light industrial in nature. It does not have nearly the material storage or toxic chemicals that are present at the East Complex. The development of the West Complex is significantly less dense than that of the East Complex. There are large areas of natural vegetation and undeveloped land throughout the West Complex. Agricultural fields are located on the south side of the complex and the area to the west and southwest is primarily undeveloped land covered with natural vegetation.

Storm water runoff is managed predominantly by open culverts and ditches. Natural vegetation and/or cobblestones line most of these waterways. Some of the culverts are continuously filled with water from groundwater. All of the culverts eventually join and culminate at a pumping station located on the west side of the Rough and Ready Island. An automated lift station pumps water from this point to the adjacent Burns Cutoff.

The mitigation measures identified in the Port’s Environmental Impact Report (EIR) for the West Complex mandates all new development to incorporate “measures to maintain runoff during peak conditions to pre-construction levels.” In addition, the EIR requires all new development to make drainage improvements so that runoff “does not exceed the capacity of on-site drainage systems and peak storm water discharge rates are maintained to pre-project levels”. The EIR and the Port’s MS4 permit encourage that Low Impact Development (LID) concepts be incorporated into the project design to accomplish these hydrological requirements.

2.3.2.2 East Complex North of “A” Street The East Complex north of “A” Street is the only area at the Port of Stockton that discharges directly to the receiving water. The types of businesses in this area are predominately heavy industrial with significant storage of materials and chemicals that could threaten storm water quality. The area is mostly impervious and much of it drains to the receiving water via storm water drain inlets, underground piping, and outfalls. Once liquids have entered the storm water sewer system, the Port has little ability to prevent their discharge to the receiving water. Historic storm water challenges in the East Complex include soil erosion and sedimentation; spills of significant materials and chemicals; track out of significant materials and chemicals onto roadways; wind erosion of outdoor storage piles; and the limitations of the storm water conveyance system to be able to grab samples representative of specific drainage areas. Therefore, the BMPs listed in Section 3.2.2 are designed to assist the Port in addressing these issues.



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2.3.2.3 East Complex South of “A” Street The East Complex south of “A” Street, for the most part, drains to the large storm water retention basin located on the southwest side of the East Complex. The retention basin has proven to be a very effective BMP for the Port and the tenants in this area. It allows solids and pollutants to settle or dissipate and minimizes the amount of water discharged to the receiving water. During some years having low rainfall, no discharge is needed. Storm water management challenges in this area include flooding; sedimentation and soil erosion; spills of significant materials and chemicals; illicit discharges; and track out of mud onto the roadways. Therefore, the BMPs listed in Section 3.2.3 are designed to assist the Port in addressing these issues.

2.3.3 Identification of Applicable New Development Projects and the Associated Pollutants of Concern

The State of California and the Port of Stockton have identified categories of new development that require properly selected and sized treatment control measures. (Section 2.3.4 addresses the sizing criteria.) BMPs must also be selected based on the pollutants of concern associated with new development. This section lists the types of developments and activities that have been identified by the State of California and the Port that require treatment control, and describes the associated pollutants of concern.



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2.3.3.1 State of California Priority Categories Table 2.3.3.1 lists the Priority Categories identified in the Port’s MS4 permit and depicts the pollutants of concern associated with each type of development.

Table 2.3.3.1 – New Development Priority Categories and Pollutants of Concern1

Pollutant Category of Concern

New Development Project Category

Sed

imen

t

Nut

rient

s

Met

als

Tras

h &

Deb

ris

Oxy

gen

Dem

and

Toxi

c O

rgan

ics

Bac

teria

Commercial Developments (>100,000 sf)

X X X X X X X

Automotive Repair Shops X X X X X

Retail Gasoline Outlets X X X X X

Restaurants X X X X X

Parking Lots (>5,000 sf or 25 spaces)

X X X X X

Home Subdivisions (>10 units)

X X X X X X X

X = Pollutant likely to be present in storm water runoff from the project area

Obviously, some of the development categories listed in the above table are highly unlikely to be included in future Port of Stockton developments. But, for future developments that fall under any of the listed categories, selected control measures will need to include measures to mitigate the pollutants of concern listed in Table 2.3.3.1.

1 Source of the table is the Small MS4 NPDES General Permit (Water Quality Order 2003-0005-DWQ), Attachment 4, page 2 and CASQA New Development and Redevelopment Handbook, January 2003 edition, Table 2-1, page 2-7



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2.3.3.2 Port of Stockton Specified Activities The Port’s MS4 permit states, “Because activities at the Port are predominately industrial, this Order [the permit] defines the MEP discharge standard to be equivalent to BAT and BCT discharge standards that are typically established for industrial storm water discharges.” The permit also states that DSP “shall consider pollutants of concern or activities of concern in identifying appropriate BMPs for new development”. Therefore, the Port has identified industrial activities that are common to the business at the Port and have identified pollutants of concern for each of the listed activities.

Table 2.3.3.2 – Port Specified Industrial Activities and Pollutants of Concern


New Development Industrial Activity

Toxi

c O

rgan

ics

Sul

fur,

Sul

fides

, Sul

fate

s

Nut

rient

s

Met

als

Tras

h &

Deb

ris

Oxy

gen

Dem

and

Oil

& G

reas

e

Bac

teria

pH

Dis

solv

ed S

olid

s

Sus

pend

ed S

olid

s

Sed

imen

t

Cement Operations X X X X X X X

Fertilizer Storage & Handling X X X X X X X

Sulfur Storage & Handling X X X X X X X X X

Petroleum Products Storage & Handling X X X X X X X

Agricultural Products Storage & Handling X X X X X X X X X X X X

Other Chemical Storage & Handling X X X X X X X X X X X

Food Products Storage & Handling X X X X X X X X X X

Steel Products Storage & Handling X X X X X

Metal Salvage / Recycling X X X X X X X

Streets and Roads (> 1 acre paved surface) X X X X X X X

Railroad Operations X X X X X

X = Pollutant likely to be present in storm water runoff from the project area



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Table 2.3.3.2 shows pollutants of concern that may be associated with each of the corresponding industrial activities. However, if it can be demonstrated that one or more of the identified pollutants of concern is not applicable to the proposed development, the Port will only require BMPs for those pollutants of concern that are applicable to the project.

2.3.4 Numeric Sizing Criteria for Treatment Control Measures The MS4 permit specifies sizing criteria for treatment control measures. The permit states that the developer may size the proposed BMP on a volume determination to capture 80% or more of the volume recommended in the CSWBMP Handbook, or as a flow rate determination based on the 85th percentile of the recorded hourly rainfall intensity multiplied by a factor of 2. The developer may also select an equivalent sizing criterion, such as a performance-based standard, to achieve the same reduction in pollutant loads that will meet the water quality objectives.

For the greater Stockton area, dependent upon the runoff coefficient (% of water that flows offsite), the Storm Water Quality Design Volume (SQDV) is approximately 0.4 to 0.8 inches of rain multiplied by the area of the facility to yield a total volume. The Storm Water Quality Design Flow (SQDF) criterion is approximately 0.10 inches/hour, which is multiplied by 2 to yield a total of 0.2 inches/hour.

For consistency, the Port of Stockton will adopt what the City of Stockton and other San Joaquin County cities have specified in their development standards plan; a SQDF of 0.2 inches/hour and a SQDV calculated by a rainfall storage figure ranging from 0.1 to 0.6 inches (depending upon the % imperviousness) multiplied by the area. The developer is to utilize the calculation worksheet contained in Appendix D. The Port will use the following reference documents to review and approve sizing of BMPs for proposed developments.

Reference Sources for BMP Sizing Guidance:

California Stormwater Quality Association Stormwater Best Management Practice Handbook – New Development and Redevelopment


Urban Runoff Quality Management, WEF Manual of Practice No. 23 / ASCE Manual of Practice No. 87, (1998)

http://www.wef.org



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2.3.5 Infiltration and Groundwater Protection Measures Developers that propose BMPs, which are designed primarily as infiltration devices (for example, a retention basin or infiltration trench), will be required to do the following:

• Demonstrate how potential pollutants that may infiltrate into the soil and groundwater will be kept from being discharged to the infiltration BMP; and

• Propose and commit to a monitoring program to periodically verify that pollutants in the surface water are not impacting the soil and groundwater.

2.3.6 Downstream Erosion and Protection Measures Downstream erosion (of the receiving water) does not apply to the West Complex or the East Complex South of “A” Street, for the most part, since these areas drain to a retention area where the releases to the receiving water are controlled.

The East Complex North of “A” has more potential for downstream erosion than the other two areas. But, since this area is already well developed, additional developments or redevelopments would not significantly increase the runoff to the receiving water and cause greater erosion potential than already exists. In fact, the development standards proposed in this DSP should actually help to reduce the risk of downstream erosion by minimizing peak flows and dissipating the runoff energy.

2.3.7 Low Impact Development (LID) The Port of Stockton is committed to the design concept of Low Impact Development (LID). Certain aspects of this Development Standards Plan address and mandate LID. Mandatory minimum BMP SD-11 requires that all roof drains be directed to a permeable area or an infiltration trench to capture runoff from the first 0.75 inches of rain of each storm event. All of the regional BMPs specified in Section 3.2.1 of this DSP for projects in the West Complex require the incorporation of LID concepts into the facility design. Applicable development and redevelopment are also encouraged to select one of the following LID treatment control BMPs:

• Vegetated buffer strips (TC-31);

• Vegetated swales (TC-30);

• Extended detention basins (TC-22);

• Wet ponds (TC-20);

• Constructed wetlands (TC-20 & MP-20);

• Detention basin / sand filter (TC-40);

• Porous pavement detention (TC-40 & SD-20);

• Porous landscape detention (TC-32 & TC-40);

• Infiltration basins (TC-11);

• Infiltration trenches (TC-10); and

• Retention / irrigation (TC-12).



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The Port recommends that all developers consider incorporating the following LID design measures into their development plans:

• Use of large spreading trees, which provide energy dissipation and peak flow reduction for storm events;

• Preservation of natural areas for storm water infiltration;

• Design landscape with bioretention cells that collect and absorb storm water from impervious areas;

• Use of permeable pavers or paving material for landscaping, pathways, and low traffic areas;

• Install cisterns and vector-proof rain barrels for the collection and reuse of storm water;

• Grade parking lots to drain to adjacent landscaped areas that have bioretention cells; and

• To the extent possible, route surface flows along a grassy swale or other permeable surface, rather than an impervious surface.

2.4 Approval Process The Port of Stockton has established a four-step process to review and approve site-specific Development Standards Plans. Figure 2.4 summarizes the process.

For more information on Low Impact Development go to … http://www.epa.gov/owow/nps/lid/

http://www.lowimpactdevelopment.org/



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Project Design Phase • Port provides Developer with the Port’s DSP • Port consults with the Developer on hydrology, LID,

and treatment control requirements • Port performs CEQA review and provides Developer

with identified mitigation measures

Notification of Project to the Port Environmental Dept.

• Port Project Notification Form • CEQA Questionnaire • Construction Fact Sheet

Port Properties Dept.

Port Operations Dept.

Existing Tenant

Step 1

Step 2

Other Port Depts.

Utility Improvements

Projects originating from …

Submittal & Plan Review Phase • Copies of the Developer’s submittal is distributed

and reviewed by the following Port Departments: Environmental, Properties, Maintenance, and Police.

• Port reviews the Developer’s site-specific DSP • Port reviews submitted construction drawings, DSP

worksheet, signed maintenance agreement, control measure selection criteria, and sizing calculations

• Port verifies that all CEQA / EIR mitigation measures have been incorporated into the project design.

Step 3

Approval Phase • Comments requiring changes by the Developer from

any of the reviewing Port Departments will be returned to the Developer for modification.

• Port Environmental will issue a permit to construct. • Port Environmental will send the Developer’s

Maintenance Agreement to the Properties Department for inclusion in the lease.

• Port Environmental will inspect the project during and after construction; and will sign-off on the Developer’s permit when all permit conditions have been met.

Step 4

Figure 2.4



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2.4.1 Project Notification Development and redevelopment projects at the Port of Stockton may originate from a variety of sources including a new tenant from the Properties Department; an infrastructure or Port-owned project from the Port Operations, Maintenance, or Police Departments; or a tenant improvement project from an existing tenant. All proposed projects, regardless of origin, require the completion and submittal to the Environmental Department of a Port Project Notification Form (Appendix A). After reviewing the Project Notification Form, the Environmental Department may also require the developer to submit a CEQA Questionnaire (Appendix B) and a Construction Management Fact Sheet (Appendix C). The Port will enter the proposed project in its DSP database.

2.4.2 Project Design Phase The Port Environmental Department will provide the project proponent with a copy of the Development Standards Plan and will consult with the developer on the hydrology, low impact development (LID), and treatment control requirements for that project.

The CEQA process begins with the consultation and questionnaire / project notification discussed in Section 2.2.1 of this plan. The Environmental Department will review the completed questionnaire and determine whether or not the project is subject to the CEQA requirements. If the project is subject to those requirements, the Port will inform the project proponent of the applicable requirements, which may include an Environmental Impact Report (EIR), a negative declaration, or a negative declaration with mitigation measures. For projects subject to the CEQA requirements, public notification and a public hearing will be required. Mitigation measures identified as part of the CEQA process will include, at a minimum, the applicable BMPs and control measures identified in this plan. However, depending upon the specifics of a project, additional mitigation measures may be required to satisfy the CEQA requirements.

2.4.3 Submittal and Plan Review Phase Project proponents are required to provide six sets of their DSP submittals for reviews to be performed by the Port Environmental, Properties, Maintenance, and Police Departments. Incomplete submittals will not be accepted. To be deemed “complete”, DSP submittals must contain the following items:

• Provide a written site-specific Development Standards Plan (a template is provided in Appendix D.

• Provide construction drawings that identify and show all required treatment controls and best management practices. (Identify and show on the drawings the pre- and post-development hydraulics including drainage area, hydraulic gradient, infiltration rate, runoff coefficient, impervious areas, and peak flow rate. Show the existing and proposed drainage systems on



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drawings including all drains, piping, culverts, retention areas, and outfalls. Drawings are to be certified and stamped by a State of California registered Civil Professional Engineer.)

• Provide assumptions and calculations used for sizing each proposed treatment control practice. Calculations are to be certified and stamped by a State of California registered Civil Professional Engineer.

• Provide a written BMP maintenance program and a signed maintenance agreement form (Appendix E).

2.4.4 Approval Phase Comments from any of the reviewing Departments that require design changes will be returned to the project proponent and a revised submittal will be required prior to the issuance of a Permit to Construct. Once all components of the submittal are found to be acceptable, the Environmental Department will issue a Permit to Construct to the project proponent authorizing the commencement of the project. (However, it is important to note that permits may still be required of the City of Stockton, Central Valley Air Pollution Control District, and other State and local agencies. It is the developer’s responsibility to identify and procure all permitting requirements by other agencies.) The Port Environmental Department will provide a copy of the signed DSP Maintenance Agreement to the Properties Department for inclusion into the lease for the subject property.

2.5 Inspection Process The Port of Stockton will confirm that the proposed BMPs and control measures are implemented by performing the following inspections.

2.5.1 Prior to Construction At its discretion, the Port may elect to perform a pre-construction inspection and site assessment. Especially in cases were toxic chemicals will be stored or used on site or when an infiltration control measure is proposed (i.e. Section 2.3.5); the Port may require that a pre-tenant occupation site assessment be performed. Soil samples and, in some cases, groundwater samples will be collected to establish a baseline for constituents of concern prior to the occupation by the tenant. This can also protect the tenant from “pre-existing” conditions. When a tenant decides to vacate a lease, another similar site assessment will be performed and compared to the original assessment to determine if there was any impact to the soil and groundwater from the tenant’s activities.

2.5.2 During Construction As described in the Port’s Storm Water Management Plan, the Port will inspect all construction sites for compliance with its SWPPP and tenant agreements at least once every two weeks during the wet season (October – April), and once a month during the dry season (May – September), until construction is terminated. The inspection of the construction activities will be performed to confirm that adequate



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construction BMPs are in place and that runoff from the construction site meets the Port’s water quality objectives. The construction inspector will also verify that the DSP-required control measures are being installed to specification.

2.5.3 Post Construction Once construction is complete, the Port will perform a “Final” inspection to assure that the BMPs and treatment control measures were installed to the approved specification and that they are functioning properly.

2.5.4 During Normal Operations Annually, the Environmental Department will inspect the facility to assure that the BMPs and treatment control measures are in use and are being properly maintained. The facility will be notified of any deficiencies and a time schedule will be set to correct any problems.



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3 Approved BMPs All new development projects at the Port are required to have incorporated certain minimum BMPs as described below. Other BMPs specific to the drainage-zone and treatment control measures are required for applicable new development (as defined in Section 2.1.1) and for significant redevelopment (as defined in Section 2.1.2). These drainage zone specific BMPs and treatment control measures are described below.

The Port has decided to incorporate the BMPs and treatment control measures identified in the California Stormwater Quality Association Stormwater Best Management Practice Handbook for New Development and Redevelopment (CASQA BMP Handbook). The following sections identify and briefly describe the recommended BMPs. Also, for ease of reference, listed next to each BMP is the corresponding CASQA code. For additional design and sizing information refer to the following reference materials:

3.1 Mandatory Minimum BMPs The following is a listing and brief description of the minimum BMPs that apply to all new development, where applicable.

3.1.1 Storm Drain Message and Signage (SD-13) All storm sewer system drain inlets must be clearly labeled to indicate that only storm water is allowed and that the drain flows to the Delta. Labels are provided by the Port of Stockton as shown below. Refer to CASQA BMP Handbook SD-13.

3.1.2 Roof Drain Design (SD-11) All roof drains are to be directed to a permeable area, an infiltration trench, or an alternative system approved by the Port Environmental Department so that runoff from a 24-hour storm event producing precipitation equal to or less than 0.75 inches will not enter the Port’s municipal storm water sewer system. The capture and reuse of the water for same initial flow volume is also an acceptable BMP. Refer to CASQA Development BMP Handbook SD-11.

Reference Sources for BMP Design and Sizing:



Urban Runoff Quality Management, WEF Manual of Practice No. 23 / ASCE

Manual of Practice No. 87, (1998)

http://www.wef.org



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3.1.3 Outdoor Material Storage Area Design (SD-34) Materials stored outside must be stored in such a way as to prevent storm water from coming in contact with materials that may contaminate storm water or to prevent contaminated storm water from discharging from the site without treatment. Refer to CASQA BMP Handbook SD-34.

3.1.4 Outdoor Trash Storage Area Design (SD-32) All trash enclosures are to be on impervious surfaces, surrounded by a screen or a wall to prevent windblown trash and debris, and covered with a rain-proof structure that meets building fire code and must be approved by the local fire department. Trash containers / bins must not leak and be covered. Refer to CASQA BMP Handbook SD-32.

3.1.5 Outdoor Loading / Unloading Dock Area Design (SD-31) Floor surfaces are to be constructed with materials that are compatible to those being loaded / unloaded. The loading / unloading dock must have a covering that extends at least 3 feet beyond the loading dock, or be equipped with a seal or door skirt used to cover all material transfers between the trailer and the building. The grade or berming must prevent run-on from surrounding areas, while downspouts and roof drains must be directed away from the loading areas. Direct connections into a storm drain from the loading dock are prohibited. Storm water may only be discharged from the loading dock via a manually controlled system after the water quality has been found to not compromise the Port’s water quality objectives or after it has been treated. Refer to CASQA BMP Handbook SD-31.

3.1.6 Outdoor Repair / Maintenance Bay Design (SD-31 and SD-35) Surfaces of equipment (vehicles, machinery, or other equipment) maintenance / repair areas are to be constructed with Portland cement concrete. Cover or berm areas where equipment with fluids are stored. Cover or enclose all equipment maintenance / repair areas. Grade the area to drain to a dead-end sump for collection of all wash water, leaks, and spills. Direct connections of the maintenance / repair areas to the storm drain are prohibited. Refer to CASQA BMP Handbook SD-31 and SD-35.

3.1.7 Outdoor Vehicle / Equipment / Accessory Washing Area Design (SD-33) The wash pad is to be constructed on Portland cement concrete. The entire wash area must be covered. The grade or berming must prevent run-on from surrounding areas and downspouts and roof drains must be directed away from the wash area. Wash water is prohibited to enter the storm sewer system. If the wash water is to be discharged to the sanitary sewer system, the City of Stockton Municipal Utilities District must be contacted. A permit and pretreatment may be required prior to discharging to the sanitary sewer. Refer to CASQA BMP Handbook SD-33.



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3.1.8 Fueling Area Design (SD-30) The fuel dispensing area must be paved with Portland cement concrete and extend 6.5 feet from the corner of each fuel dispenser or the length at which the hose and nozzle assembly may be operated plus 1 foot. The fuel dispensing area must have a 2% to 4% slope to prevent ponding and must be separated from the rest of the site by a grade break or berming. The fuel dispensing area must be covered if the area is not contained. The covering must be at least equal in area to the Portland concrete paved area, as described above. If the fuel dispensing area is not covered, the fueling island must be large enough to sufficiently accommodate the largest vehicle or equipment and must drain storm water, wash downs, leaks, and spills to a dead-end sump. Water that accumulates in the dead-end sump may not be discharged to a storm drain or an infiltration area or structure. Refer to CASQA BMP Handbook SD-30.

3.1.9 Spill Control and Response Measures (POS-01) All new development and significant redevelopment must have incorporated into its design a location for the storage of spill response equipment for materials stored or used at that facility and, at that storage location, post information on how to respond to a spill. In addition, projects must also include design measures to allow for the physical control of spills of stored and handled materials to prevent them from discharging to the receiving water through the Port’s storm water sewer system.

3.2 Drainage Zone Specific BMPs The following is a listing and brief description of the BMPs required of all applicable new development in specific drainage zones of the Port.

3.2.1 West Complex All of the following BMPs apply to new development and significant redevelopment in the West Complex:

3.2.1.1 Conserve Natural Areas (SD-10) In order to maintain the West Complexes ability to bio-filter the storm water runoff, to the extent possible, the natural areas of the West Complex should be incorporated into the design of the project. Concentrate or cluster development on the least-sensitive portions of the site, while leaving the rest of the land in a natural or undisturbed state. Limit clearing and grading of native vegetation at the site. Protect natural or vegetated drainage culverts and ditches. Promote natural vegetation by using parking lot islands and other landscaped areas. Preserve riparian areas and wetlands. For more information, refer to CASQA BMP Handbook SD-10.



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3.2.1.2 Minimize Impervious Areas (SD-10, SD-20, and SD-21) In order to minimize the amount of storm water that is discharged from the West Complex, new developments are required to minimize, to the extent possible, the amount of impervious surface area. This may be accomplished by reducing the footprint of buildings and parking lots; minimizing the widths for roadways, sidewalks, and other paved areas; incorporating landscaping into the project design; use pervious pavement materials where appropriate, use grass-lined channels or surface swales to convey runoff instead of paved gutters. For more information, refer CASQA BMP Handbook SD-10, SD-20, and SD-21.

3.2.1.3 No Net Increase in Runoff Volume or Peak Rate (POS-02) The mitigation measures identified in the Port’s Environmental Impact Report (EIR) for the West Complex mandates all new development to incorporate “measures to maintain runoff during peak conditions to pre-construction levels.” In addition, the EIR requires all new development to make drainage improvements so that runoff “does not exceed the capacity of on-site drainage systems and peak storm water discharge rates are maintained to pre-project levels”. The EIR and the Port’s MS4 permit encourage that Low Impact Development (LID) concepts be incorporated into the project design to accomplish these hydrological requirements. Therefore, all development projects on the West Complex must have control measures in place to assure that post-development storm water discharge volumes and peak flow rates do not exceed the pre-development values.

3.2.2 East Complex – North of “A” Street All of the following BMPs apply to new development and significant redevelopment in the East Complex, north of “A” Street:

3.2.2.1 Sample Box Installation (POS-03) In order to be able to test the storm water runoff from a tenant’s facility, a sample box or sample boxes must be installed to allow for the collection of a sample from the final storm water discharge from the facility prior to mixing with discharges from other surrounding facilities. This will enable the tenant and the Port to assess the quality of storm water runoff from that facility and also monitor for non-storm water discharges. The sample box must be accessible at all times and have an access hatch that can be opened by one person without the use of equipment or tools. The access hatch must be sufficient to allow a visual observation and to lower storm water sample collection containers.

3.2.2.2 Stabilization of Surfaces (POS-04) Because this drainage zone discharges straight into the receiving water and the area has high traffic and use, all surfaces must be stabilized to prevent runoff containing excessive sediment, suspended solids, and/or turbidity caused by soil erosion or track out. Surfaces may be stabilized with asphalt, concrete, or a sufficient amount of washed crushed rock.



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3.2.3 East Complex – South of A Street All of the following BMPs apply to new development and significant redevelopment in the East Complex, south of “A” Street:

3.2.3.1 Track Out Control (POS-05) Since much of this area is not paved, there is a high potential for the track out of mud and sediment onto the area roadways. If a new development or significant redevelopment has unpaved areas that may be driven across by equipment or vehicles, all exits from those areas must have track out control measures that are effective and prevent mud and sediment from being carried out onto the paved roadway.

3.2.3.2 Open Drainage Culverts (POS-06) Open drainage culverts and ditches are to be constructed to prevent erosion. Sides of open ditches and culverts may be either grass-lined or covered with a sufficient amount of 1” or larger washed rock. Except in cases where structural stability is required, concrete lined or impervious culverts are not to be used.

3.3 Treatment Control Options for State of California Priority Categories and Port Specified Industries

Applicable new developments and significant redevelopments must incorporate into their design a properly sized treatment control measure, or combination of control measures, that are selected to treat / remove the potential pollutants associated with the development. Sizing criteria is discussed in Section 2.3.4 of this plan. A development-wide control measure may be used for developments where there are multiple types of land use as long as it addresses all of the pollutants of concern for each land usage and is adequately sized for the entire development. For sizing criteria, refer to the Site-Specific Development Standards Plan Template in Appendix D and to the CASQA BMP Handbook. The following is a listing and brief description of the approved treatment control measures.

3.3.1 Vegetated Buffer Strips (TC-31) Vegetated buffer strips, also called grass strips, are areas of uniformly graded vegetated surfaces that are designed to receive sheet flow from impervious surfaces. They reduce the velocity of the sheet flow and evenly distribute the runoff. The grass strips act as a biofilter to allow solids and other pollutants to settle out of the runoff. They must be adequately designed using flow-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-31.

3.3.2 Vegetated Swales (TC-30) Vegetated swales, also called grassy swales, are open vegetated swales with gradual sloping sides that by a slight downward gradient slowly convey storm water to the downstream point of discharge. Grassy swales will reduce the velocity of the storm water flow and act as a biofilter to allow solids and other pollutants to settle



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out of the runoff. They must be adequately designed using flow-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-30.

3.3.3 Extended Detention Basin (TC-22) Extended detention basins are shallow excavated depressions or areas built up with berming that act as a temporary holding for storm water. Extended detention basins typically allow a temporary storm water impoundment depth of one to three feet, have an outlet that allows a slow discharge of water to the discharge point, and are typically dry between storm events. The benefits of an extended detention basin include the settling of particulate matter, reduction of the peak storm water runoff volume for flood control and water quality enhancements, reduction of runoff velocity, and the promotion of biofiltering and conversion of pollutants. The extended detention basin must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-22.

3.3.4 Wet Pond (TC-20) A wet pond is similar in design to an extended detention basin with the exception that it is designed to hold water for a longer period of time. The concept of a wet pond is that incoming water from a storm event displaces the existing water from the previous storm event. Typically, water impoundment depths are deeper in the wet pond than in an extended detention basin. Like with the extended detention basin, the benefits of a wet pond include the settling of particulate matter in the storm water, reduction of the peak storm water runoff volume for flood control and water quality enhancements, reduction of runoff velocity, and the promotion of biofiltering and conversion of pollutants. The wet pond must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-20.

3.3.5 Constructed Wetland (TC-20 and MP-20) Very few projects at the Port will be able to use a constructed wetland treatment control due to restrictions in the size of the lot and not having a permanent water source. However, this treatment control BMP is included as an option because there are a few areas at the Port that would be able to accommodate and benefit from this type of treatment. This would include certain dredge placement sites and some of the southwest and west areas of the West Complex. It should be noted that a constructed wetland differs greatly from a natural wetland in how it is regulated. Storm water flows should not be allowed to discharge without treatment to a natural wetland. Natural wetlands can be incorporated into a constructed wetland but require State and Federal approval to do so. State and Federal approval are not required for a constructed wetland that does not integrate a natural wetland. The benefits of a constructed wetland include the allowing of settling of particulate matter in the storm water, reduction of the peak storm water runoff volume for flood control and water quality enhancements, reduction of runoff velocity, and the promotion of biofiltering, biological uptake, and conversion of pollutants. The constructed wetland must be adequately designed using volume-



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based design criteria. For design criteria details refer to CASQA BMP Handbook TC-20 and MP-20.

3.3.6 Detention Basin / Sand Filter (TC-40) A detention basin / sand filter is a detention basin that is separated into a fore bay and sand filter storage zone. The sand filter consists of a type of a French drain; perforated pipe placed in gravel and covered by at least 18” of sand. The water leaches through the sand and gravel pack and is discharged via the subsurface collection system. This allows for filtering of solids and particulates in the storm water. Oils and greases will also tend to be trapped in the detention basin. The detention basin / sand filter must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-40.

3.3.7 Porous Pavement Detention (TC-40 and SD-20) Similar in concept to the detention basin / sand filter is the porous pavement detention. The concept uses porous pavement blocks or permeable pavement that is laid on a sand bed on top of a French drain type collection system. The area is graded to allow approximately two inches of water to accumulate on the pavers / pavement. The water infiltrates through the pavers / pavement and sand and into the subsurface storm water collection system, which discharges the water to the facility’s outfall. The porous pavement detention must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-40 and SD-20.

3.3.8 Porous Landscape Detention (TC-32 and TC-40) Porous landscape detention function similarly to the porous pavement detention except that vegetation is used instead of pavers. The porous landscape detention must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-32 and TC-40.

3.3.9 Infiltration Basin (TC-11) The infiltration basin (also called a retention basin) is different from the various types of detention basins discussed above in that they are designed to hold all of the incoming storm water flow and allow the water to infiltrate (percolate) into the ground. To be successful, these infiltration basins must be located were natural soils have high percolation rates. The benefits include allowing the facility to greatly reduce the number of discharges to surface waters (potentially to zero-discharge) and provide for groundwater recharge. The disadvantages include the possibility of contaminating groundwater, the large amount of area required, and their potential for clogging. The infiltration basin must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-11.



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3.3.10 Infiltration Trench (TC-10) The infiltration trench functions like a leach field for storm water. A trench filled with rock and/or sand temporarily receives the storm water and allows it to infiltrate into soils that have high permeability rates. A collection pipe may be installed to allow the water to be diverted in case of heavy flow or clogging. Usually, a vegetated strip surrounds the infiltration trench. In the right application with the proper soil conditions, the infiltration trench can eliminate discharges of storm water. The infiltration trench must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-10.

3.3.11 Media Filter (TC-40 and MP-40) The media filter is a constructed filter that uses sand and/or other media to filter storm water. It works similar to the sand filters discussed above, except that this design is typically contained in a constructed vault system. The three most common designs include the Austin Sand Filter System, the DC Underground Sand Filter, and the Delaware Sand Filter. There are also various proprietary systems marketed. Media filters must be adequately designed using volume-based design criteria. For design criteria details refer to CASQA BMP Handbook TC-40 and MP-40.

3.3.12 Retention / Irrigation (TC-12) The retention / irrigation control measure involves the retention of storm water runoff and the subsequent reuse of it as irrigation water on landscaping. For the right application, this may allow the facility to obtain zero discharge. To adequately size the retention basin, volume-based design criteria must be used. For design criteria details refer to CASQA BMP Handbook TC-12.

3.3.13 Alternative Control Measures and Proprietary Control Measures (POS-99)

The above-described treatment controls are recognized by the USEPA, State of California, and the Port of Stockton as effective control measures for industrial, commercial, and municipal applications. Therefore, the proper selection of any of the above-described control measures will facilitate the approval process. However, the Port also recognizes that these are not the only effective treatment controls available and may not be the best treatment control for a particular development. Therefore, the Port will allow for alternative proprietary and non-proprietary control measures to be proposed for use in the design. As with any treatment control measure, they must be properly sized following the sizing criteria described in Section 2.3.4 of this plan. The Port reserves the right to accept or reject any proposed treatment control on the basis of an engineering review, questions concerning its effectiveness, potential to impact surface water or groundwater, land use of the facility or neighboring facilities, risk of treatment bypass or failure, and health or vector control issues. It is the developer’s responsibility to demonstrate that the proposed treatment control is properly sized and will be effective to achieve Port’s water quality goals.



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4 Development Standards Plan Approval and Accessibility This Development Standards Plan (DSP) was prepared by the Port of Stockton Department of Environmental and Regulatory Affairs (Environmental Department) and was reviewed and approved by Jeff Wingfield, Environmental Manager and Jeff Kaspar, the Deputy Port Director of Properties and Environmental, on November 17, 2005. A draft of the DSP was submitted to the Central Valley Regional Water Quality Control Board (RWQCB) for review and approval on March 1, 2005. Approval was received from the RWQCB on November 17, 2005. The DSP and requirements will become mandatory for the Port and its tenants on February 17, 2006. In response to the USEPA audit findings, the DSP was revised and the changes became effective on June 1, 2009. The Port of Stockton DSP is a public accessible document and may be obtained by contacting the Port of Stockton Environmental Department at (209) 946-0246 or by downloading it at http://www.stocktonport.com/.


Appendix A Project Notification Form


Project Notification Form

Name of Project: ______________________________

Developer Name: ______________________________

Street Address: _____________________________________

City: ______________________________

State: ________ Zip: _________________

Email Address: ________________________________

Phone No.: _______________________________

Fax No.: _______________________________

Cell No.: _______________________________

Project Information:

Port Drainage Zone: East Complex South of “A” Street (Circle one)

East Complex North of “A” Street

West Complex

Physical Address: ___________________________________________

Project Size: _________________ Units: ______________

Anticipated Start Date: ____________________

Anticipated Completion Date: _____________________

New Construction Redevelopment

Project Description:

The Port of Stockton tariffs, lease agreements, and the Port’s Municipal NPDES Permit require that the Port be notified of all development and redevelopment projects and that each project be assessed for its applicability to the Storm Water Development Standards Plan prior to the commencement of field activities. For more information about these requirements, contact the Port Environmental Manager, Jeff Wingfield at (209) 946-0246.


Appendix B CEQA Questionnaire


1

PORT OF STOCKTON Phone: (209) 946-0246 Fax: (209) 464-1251 Date Received _____________

APPLICATION

CALIFORNIA ENVIRONMENTAL QUALITY ACT DETERMINATION SECTION A - APPLICANT 1. Applicant's Name:____________________________________________________________________________ Address:_________________________________________________________________________ Contact Person/Title:_______________________________________/____________________ Telephone Number: (____)_________________________ 1a. Applicant's legal interest in property (be specific): _________________________________________________________________________________ (Owner, leaseholder, etc.; include document number) 2. Authorized Agent's Name*: _______________________________________________________ Address/Tel. No: ___________________________________________/____________________ 3. Project Location (be specific):__________________________________________________ _________________________________________________________________________________ 4. Present use of property: ________________________________________________________ _________________________________________________________________________________ 5. Will the project require a new lease from the Port of Stockton? Yes____ No____. Will the project require a modification of an existing lease? Yes____ No____. 6. Has any previous application been made to the Port of Stockton relating to the same site? Yes____ No____. If Yes, give

the previous application number(s). __________ * Must be consistent with Section H, page 12 when applicable


2

SECTION B - PROJECT DESCRIPTION (attach extra sheets if necessary). Note: Applicants are encouraged to consult with the Port of Stockton concerning the types and levels of detail required. 1. Project Description:_________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 2. Potential for exemption from California Environmental Quality Act review.

a. Is the project an existing operation that involves no expansion of the capacity? Yes____ No____. b. Is the project a replacement of an existing facility that will be located in the same place and have the same purpose

and capacity as the existing facility? Yes____ No____.

c. If Yes, complete the following items.

i) Is the project located on a hazardous waste site on the Cortese List? Yes____ No____.

ii) Will the project affect a structure that is more than 45 years old? Yes____ No____.

iii) Will the project affect a wetland, riparian community, or a listed biological resource? Yes____ No____. 3. Will the project require new grading or construction? Yes____ No____. If Yes, attach the following drawings and plans, where appropriate:

(a) A preliminary site plan of all proposed work, including structures to be removed or demolished and parking.

(b) Elevations of all proposed structures.

(c) Grading and drainage plans

(d) Plans for all necessary utility line extensions.

(e) Preliminary drawings showing the location of underground structures, pipelines, and utilities.

(f) A Phase I. 4. Is this project an initial phase of a larger development that will occur within the next 10 years? Yes ____ No ____. If Yes, attach complete project description and plans for the entire project. 5. Estimated cost of: materials $________________; labor $_____________; equipment $________________; stored cargo$____________. 6. Does the project involve public funds? Yes____ No____


3

7. Project Site: a. Lot area _____________________ (sq. ft./acres). b. Total coverage of paved areas _______________ (sq. ft./acres). c. Landscaped and unimproved area __________________ (sq. ft./acres). d. Existing grade _______________ (ft.). e. Average finished grade ____________________ (ft.). f. Buildings/parking: Number of Floor No. of Height of Number of Parking Spaces Area (ft2) Floors Building Employees Covered Open Existing _________ ______ ________ ________ ______ ______ Proposed _________ ______ ________ ________ ______ ______ 8. a. Identify utilities the project will use and estimate the consumption rate. If the project involves multiple phases, identify consumption at each phase and at full build-out.

Utility Construction Operation Daily Annual Peak Daily Use Gas Electric Water (potable) Water (nonpotable) Wastewater b. Describe current location of service lines for necessary utility connections and proposed extensions or relocations of

service lines. Existing Location Proposed Extension or Relocation Gas

Electric

Water (potable)

Water (nonpotable)

Wastewater

Telecommunications

d. Will the project result in any process or non-process discharge to open waters? Yes____ No____. If yes, describe the discharges. _______________________________________________________ ________________________________________________________________________________


4

9. Does the development involve diking, filling, or dredging of the Deep Water Ship Channel (DWSC)? Yes___ No___. If yes, what alternatives are available? How will the adverse environmental effects of this be minimized? _________________________________________________________________________________ _________________________________________________________________________________ 10. If the project will involve grading and landscaping answer below, if not continue to question 14.

Amount of Grading to Be Performed (Cu. Yds.) ____________ Amount of Cut (Cu. Yds.) ____________ Amount of Fill (Cu. Yds.) ____________ Maximum Height of Fill or Cut Slopes _____________________________ Location of Borrow or Disposal Site______________________________________________________

11. Describe how grading will be conducted so as to minimize the alteration of landforms and to minimize erosion during and after construction. _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 13. Describe proposed alterations or addition of landscaping on the site. _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 14. List noise levels from new operational equipment that results in more than 60 dBA at 50 feet, based on manufacturer’s

data, where available.

Equipment Noise Levels


5

15. Describe the estimated utilization of construction equipment (cranes, trucks, graders, loaders, etc.). Attach extra sheets if necessary.

Type of Equipment Estimated Number on Site

Estimated Hours of Operation/Day

Estimated Number of Days of Operation

16. Will the development maintain, enhance, or conflict with public access in the Port? Yes ___ No ___. If yes, describe. _________________________________________________________________________________ _________________________________________________________________________________ 17. How will the development affect land-borne traffic? Current Trips Project Trips Construction Operation Truck AM Peak Hours (7-9 AM) PM Peak Hours (4-6 PM) Off Peak Hours Rail AM Peak Hours (7-9 AM) PM Peak Hours (4-6 PM) Off Peak Hours Employee Vehicles AM Peak Hours (7-9 AM) PM Peak Hours (4-6 PM) Off Peak Hours


6

18. Estimated maximum population during project operation: Weekdays Weekends Day Night Day Night ---------------------- ----------------------- Workers: Visitors: 19. If the development will interfere with the line of sight to and along the DWSC scenic viewpoints, indicate the extent (design, size, location, etc.) of interference. _________________________________________________________________________________ _________________________________________________________________________________ 20. Is the proposed project adjacent to or near the DWSC, sensitive habitat areas, parks or recreation areas or will the project displace recreation activities, including boating? Yes ___ No ___. If yes, describe how the project design will prevent adverse impacts on these areas. _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 21. Will the operation of this project result in any change (either increase or decrease) in the type or quantity of air emissions? If so, describe below. Include diesel particulate emissions separately. Attach extra sheets if necessary.

Emissions Source Pollutant Quantity (tons/year)


7

SECTION C - HAZARDOUS MATERIALS AND WASTES 1. Will the proposed structure(s) or business use, manufacture, treat, produce, or store any hazardous material1 or

hazardous waste2? Yes No Hazardous Material ___ ___ Hazardous Waste ___ ___ If the answer to either question is "yes", complete all remaining sections; if "no", then proceed directly to Section E. 2. What types and quantities of hazardous materials or wastes are to be used or stored at the site? (attach additional sheets

if necessary). Quantities Manufactured, Used, or Materials Stored per Month (Indicate Which) _________________________ ___________________________________ _________________________ ___________________________________ _________________________ ___________________________________ 3. Describe how hazardous materials are used in your operation. _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 4. How will hazardous materials be transported to and/or from the site? Describe routes and frequency of movements.

Provide a map and give the name of the transporter. _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 5. Will there be a hazardous waste by-product from the proposed project? Yes___ No___. If yes, specify types, quantities, 1 Hazardous materials include substances that are flammable, toxic, corrosive, or reactive. They also include substances which, by experience or testing, pose an extreme hazard to public health because of carcinogenicity, high acute or chronic toxicity, bioaccumulative properties, or persistence in the environment. 2 State law defines hazardous waste as "waste, or combination of wastes, which may cause an increase in mortality or certain serious illnesses, or may pose a substantial hazard to human health or the environment when improperly managed, because of its quantity, concentration, or physical, chemical, or infectious characteristics."


8

and the location of ultimate disposal. Provide the site EPA Generator Number and the name(s) of transporters if disposed off site.

_________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 6. List any hazardous material or hazardous waste permits from federal, state, or local regulatory agencies that you hold now

or have held in the past. Agency Permit Type and Number _________________________ _____________________________________________ _________________________ _____________________________________________ 7. Will any hazardous waste disposal be required during the construction or vacation of the property? Yes___ No___. If yes, describe the type(s) and amounts of waste and the methods and locations of disposal. _________________________________________________________________________________ _________________________________________________________________________________ 8. Are underground tanks present on the property or proposed to be installed? Yes___ No___. If yes, indicate volumes and uses. _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 9. Has the applicant performed a Phase I Environmental Assessment that meets the requirements of EPA’s Standards and

Practices for All Appropriate Inquiries (40 CFR Part 312) and the ASTM Standard Practice for Environmental Site Assessments (E 1527-05)? Yes___ No___. If Yes, please attach. If No, will one be performed? Explain: _________________________________________________________________


9

SECTION D - RISK MANAGEMENT INFORMATION Applicants who handle, transport, or store hazardous commodities are advised that developments must provide a level of fire protection that is acceptable to the City Fire Department. The technical analysis required to determine compliance will be prepared by Port staff at the applicant's cost. Applicants are encouraged to consult with Port and Fire Department staff before completing this application, in order to discuss applicable port policies and procedures, discuss alternative siting, design and operation features, identify other responsible agencies, and determine the level of information required in the application. Applicants are free, however, to submit their own calculations for formal consideration by the Port. 1. Liquid Bulk Hazard Footprint Calculation Data a. List and describe all liquid bulk hazardous materials intended to be stored or transferred on the following table.

NFPA Hazard Ratings

------------------------------- Material Other Volume of Identification3 Health Fire Reactivity Hazards State4 Storage ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ b. Provide a plot plan showing the location, general arrangement, and dimensions of each separate tank, diked

area, truck rack, ship's berth, secondary containment area, etc., for each facility, and identify where specific hazardous liquid bulk materials will be stored or transferred.

2. Hazard Protection Features5 a. Distance to nearest task force station, fire station, or fireboat: ___________________________________________________________________________ b. Proposed Construction Type: _______________________________________________ c. NFPA Fire Rating: _________________________________________________________ 3 Trade name, generic name, or chemical formula may be given so long as hazard-related properties are uniquely identified (or can be). MSDS sheets should be attached if available. 4 Liquid, solid, liquefied gas, temperature, pressure. 5 The applicant is encouraged to discuss any potentially hazardous situations with the Fire Department, and to propose mutually acceptable means of protection or mitigation in the application. No development will be approved by the Port without written concurrence from the Fire Department that an acceptable level of protection will be provided by public or private means.


10

d. Risk Management Design Features: Secondary containment ____________________________________________________ Vapor detection __________________________________________________________ Spill detection ____________________________________________________________ Fire suppression __________________________________________________________ Early warning systems _____________________________________________________ Structural or topographic shielding ____________________________________________ Personnel shelters ________________________________________________________ Protective gear ___________________________________________________________ Other __________________________________________________________________ e. Risk Management Procedures: Training and emergency drills _______________________________________________ Evacuation plans _________________________________________________________ Shutdown procedures _____________________________________________________ f. Other: _______________________________________________________________________ _____________________________________________________________________ 3. Attach a copy of your facility's Emergency Response Plan, Safety Plan, and Closure Plan. 4. Will the development involve the use of any open flame source or be sited near operations utilizing open flame sources?

Yes____ No____. If yes, describe the nature and location of sources. ______________________________________________________________________

_______________________________________________________________________


11

SECTION E - LAND-USE AND REGULATORY SETTING 1. Is the project PORT-RELATED? Yes ____ No ____. If no, indicate any port-related facilities to be replaced by the

proposed development: _________________________________________________________________________________

_________________________________________________________________________________ 2. Provide answers to the following questions using attached sheets or supporting documents, as appropriate; if a question is

not applicable, write N/A in the spaces provided on this form. a. What is the current level of ship or barge traffic, and what changes are proposed?

_________________________________________________________________ b. What sizes of vessels will use the proposed project and how often? ___________________________________________________________________________ c. Will the project change the capacity of the shoreside handling facilities? Yes____ No____. If yes, describe the current and proposed capacities. d. What alternative sites have been evaluated for the proposed project?

___________________________________________________________________________ e. Does the project require a permit or permits from the Central Valley Air Quality Management District or EPA?

Yes_____ No_____. f. What contingency plans have been developed to deal with emergency events in the project area?

___________________________________________________________________________ g. Does the existing facility have a Terminal Operations Plan? Yes____ No____. If yes, attach a copy. h. Will the project result in the displacement or abandonment of any existing petroleum related operation? Yes____ No____. i. Will the project result in the displacement or relocation of any businesses? Yes____ No____. If yes, list each business and its address. j Will the development require any Federal authorizations? Yes____ No____. If yes, describe. k. Will the project require a Non-Point Source Construction Activities Permit from the State Water Resources

Control Board? Yes___ No___. l. Does this project involve vehicle or equipment maintenance activities during construction or operation? Yes____ No____. m. Does the facility have a Storm Water Pollution Prevention Plan (SWPPP) ? Yes____ No____. n. Does the project involve the installation or removal of underground storage tank(s)? Yes____ No____. If yes, attach a current copy of a Financial Responsibility Certificate.


12

SECTION F - OTHER PERMITS OR APPROVALS List all permits, permissions, or approvals required from public agencies for this development, and indicate those applied for or granted. _______________________________________________________________________________________ _______________________________________________________________________________________ SECTION G - INTERESTED PERSONS Persons or organizations you know are interested in the project (name, address and telephone number, if known). Attach separate sheets if necessary. _______________________________________________________________________________________ _______________________________________________________________________________________ SECTION H - CERTIFICATION I/We attest that to the best of my/our knowledge and belief the information supplied in and accompanying this application is true and accurate and that any false or misleading information or nondisclosure of material facts shall be cause for denial of this application and for revocation of any permit issued in reliance on the information contained herein. (x)_______________________________________________________________/____________________ Signature of Applicant(s) or Agent* Date _______________________________________________________________________________________ Name & Title of Applicant or Agent* (printed or typed) * Agent must be authorized by Applicant -- see below Agent Authorization (Complete if applicable): I hereby authorize (name)_________________________________________________________ (title)________________________________________________________ with (firm) ________________________________________________________ to act as my representative and bind me in all matters concerning this application. (x)____________________________________________________________________________________ Signature of Applicant(s) ____________________________________________________________________________________ Name of Applicant and Title (printed or typed)


Appendix C Construction Management Fact Sheet


Port of Stockton Construction Management Fact Sheet

CMFS Page 1 Rev. 12/06/2011

NOTE: This fact sheet is required to be completed and signed by the construction project owner/operator who plans to conduct construction activities on Port property. This form must be submitted to the Port of Stockton’s Environmental Department prior to the commencement of soil disturbing activities. For sites:

Less than one acre: Submit Sections 1, 2, 4, and 5 at least 3 business days prior to the start of soil disturbing activities. Applies to CGP Waiver projects.

One acre or greater: Submit Sections 1, 2, 3, and 5 at least 5 business days prior to start of soil disturbing activities

A Notice to Proceed is required before any construction activities commence and will be issued once all required documentation and documents have been approved.

Section 1: Contact Information

PROJECT OWNER’S NAME:

Address:

PROJECT MANAGER:

Company Name:

Telephone #:

Email Address:

ON-SITE RESPONSIBLE PERSON:

Company Name:

Telephone #:

Email Address:

Section 2: General Project Information

Project Name:

Location

Start Date: Est. Completion Date:

Project Size: Acres or Sq. Feet

Only complete Section 3 if the project has soil disturbance equal to 1 acre or greater or is part of a larger common plan and it is not a “waiver” site as described by the Construction General Permit:

Section 3: Construction General Permit Information

Risk Level / LUP Type (circle one): Risk Level 1 Risk Level 2 LUP Type 1 LUP Type 2

WDID #:

QSD (Name and Company):

Telephone #:

Email Address:

QSP (Name and Company):

Telephone #:

Email Address:



Only complete Section 4 if the project less than one 1 acre or is not part of a larger common plan or if the project is a “Waiver” site as described by the CGP:

CASQA BMP Fact Sheets can be obtained at: www.casqa.org

Section 4: Small Site Water Pollution Control Plan

Waste Management BMPS: indicates mandated BMP

CASQA Fact

Sheet

BMP Name Meets a

Minimum

Requirement

BMP used If not used, state reason:

YES NO

WM‐01 Material Delivery and Storage

WM‐02 Material Use

WM‐03 Stockpile Management

WM‐04 Spill Prevention and Control

WM‐05 Solid Waste Management

WM‐06 Hazardous Waste Management

WM‐07 Contaminated Soil Management

WM‐08 Concrete Waste Management

WM‐09 Sanitary‐Septic Waste Management

WM‐10 Liquid Waste Management

Alternate BMPs Used: If used, state reason:

Erosion Control BMPS: indicates mandated BMP; Must use at least one BMP indicated with *.

CASQA Fact

Sheet

BMP Name Meets a

Minimum

Requirement

BMP used If not used, state reason:

YES NO

EC‐1 Scheduling

EC‐2 Preservation of Existing Vegetation

EC‐3 Hydraulic Mulch *

EC‐4 Hydroseed *

EC‐5 Soil Binders *

EC‐6 Straw Mulch *

EC‐7 Geotextiles and Mats *

EC‐8 Wood Mulching *

EC‐9 Earth Dike and Drainage Swales

EC‐10 Velocity Dissipation Devices

EC‐11 Slope Drains

EC‐12 Stream Bank Stabilization

EC‐14 Compost Blankets *

EC‐15 Soil Preparation‐Roughening

EC‐16 Non‐Vegetated Stabilization *

WE‐1 Wind Erosion Control




Sediment Control BMPS: indicates mandated BMP; Must use at least one BMP indicated with *.

CASQA Fact

Sheet BMP Name

Meets a

Minimum

Requirement

BMP used

If not used, state reason

YES NO

SE‐1 Silt Fence *

SE‐2 Sediment Basin

SE‐3 Sediment Trap

SE‐4 Check Dams

SE‐5 Fiber Rolls *

SE‐6 Gravel Bag Berm *

SE‐7 Street Sweeping

SE‐8 Sandbag Barrier *

SE‐10 Storm Drain Inlet Protection

TC‐1 Stabilized Construction Entrance and

Exit

TC‐2 Stabilized Construction Roadway


Non‐storm Water Control BMPS: indicates mandated BMP; Must use at least one BMP indicated with *.

CASQA

Fact Sheet BMP Name

Meets a

Minimum

Requirement

BMP used If not used, state reason

YES NO

NS‐2 Dewatering Operation

NS‐3 Paving and Grinding Operation

NS‐8 Vehicle and Equipment Cleaning

NS‐9 Vehicle and Equipment Fueling

NS‐10 Vehicle and Equipment Maintenance

NS‐11 Pile Driving Operation

NS‐12 Concrete Curing

NS‐13 Concrete Finishing

NS‐14 Material and Equipment Use Over Water

NS‐15 Demolition Removal Adjacent to Water

NS‐16 Temporary Batch Plants




Section 5: Storm Water Development Standards Plan

The Port of Stockton has State‐mandated requirements for the management of storm water runoff from new development and redevelopment. These requirements are described in the Port’s Storm Water Development Standards Plan (DSP) and include storm water pollution mitigation measures that are required to be incorporated into the design of development or redevelopment projects. They are called post‐construction control measures, because they are the features of your project which will be left in place (after the silt fence and straw wattle have been removed) to reduce the quantity of storm water runoff and to improve the quality of the runoff that does occur.

“Significant Redevelopment” is defined as the creation or addition of at least 5,000 sq. ft. of impervious surfaces on an already developed site. It includes, but is not limited to: expansion of a building footprint; replacement of a structure; replacement of an impervious surface; and land‐disturbing activities related to structural or impervious surfaces.

Is my proposed project a new development or significant redevelopment of at least 5,000 sq. ft of impervious surface on a developed site?

Yes Call the Port's Environmental Department for a copy of the DSP. No

The Port has three different drainage zones. Each zone has additional development standards to protect water quality and to manage storm water. These zone‐specific standards must be met in addition to the minimum standards for all sites at the Port.

Where is my project located?

Authorization

___________________________________ _____________________________________ Project Owner/Operator or Authorized Agent Port Representative __________________________________ _______________________________________ Company Title ________________________________ ________________________________ Date Date

Questions? Call the Port of Stockton Environmental Dept. (209) 946‐0246


Appendix D Site-Specific Development Standards Plan Template


Site-Specific Development Standards Plan

Project Name: ___________________________

Developer: ___________________________


Project Name: ______________________ Site Specific DSP Page 2 of 8

1 PROJECT DESCRIPTION

1.1 Project Information

Project Information: Name of Project:

Address:

General Location:

Project Size:

(indicate sq. ft. or acres) Anticipated Construction

Start Date: Anticipated Construction

End Date: Owner Information:

Name:

Address:

Contact Name:

Telephone No.:

Developer Information: Name:

Address:

Contact Name:

Telephone No.:

Hydrology Information: Percent Impervious before

Construction: Percent Impervious after

Construction: Runoff Coefficient before

Construction: Runoff Coefficient after

Construction: Peak Runoff (cfs) before

Construction: Peak Runoff (cfs) after

Construction:



1.2 Type of Project

Choose one of the following: New Development includes all new construction on a vacant property; new

construction after a complete demolition; and new construction or a tenant improvement that results in a change-of-use.

Applicable Redevelopment is defined as the creation or addition of at least 5,000 sq. ft. of impervious surfaces on an already developed site. It includes, but is not limited to: expansion of a building footprint; replacement of a structure; replacement of an impervious surface; and land-disturbing activities related to structural or impervious surfaces. Significant redevelopment does not include replacement of impervious surfaces that is a part of routine maintenance, such as the repair and/or replacement of an asphalt parking lot; or the replacement of a building(s) or other structures where the net increase of impervious surface is less than 5,000 sq. ft.

1.3 Project Category

Check the Appropriate Project Categories

(DSP Table 2.3.3.1 – New Development Priority Categories and Pollutants of Concern1)

Applicable Categories

(Check all that apply to the proposed

development)

New Development Project Category

(including, but not limited to, commercial, residential, and industrial

projects)


Sed

imen

t

Nut

rient

s

Met

als

Tras

h &

Deb

ris

Oxy

gen

Dem

and

Toxi

c O

rgan

ics

Bac

teria

Commercial Developments

(>=100,000 sf) X X X X X X X

Automotive Repair Shops X X X X X Retail Gasoline Outlets X X X X X Restaurants X X X X X Parking Lots (>=5,000 sf or 25

spaces) X X X X X

X = Pollutant likely to be present in stormwater runoff from the project area

1 Source of the table is the Small MS4 NPDES General Permit (Water Quality Order 2003-0005-DWQ), Attachment 4, page 2 and CASQA New Development and Redevelopment Handbook, January 2003 edition, Table 2-1, page 2-7



The Port of Stockton has identified industrial activities that are common to the business within the Port and have identified pollutants of concern for each of the listed activities.

Table 2.3.3.2 – Port Specified Industrial Activities and Pollutants of

Concern

Applicable Categories (Check all that apply to the

proposed development) To

xic

Org

anic

s

Sul

fur,

Sul

fides

, Sul

fate

s

Nut

rient

s

Met

als

Tras

h &

Deb

ris

Oxy

gen

Dem

and

Oil

& G

reas

e

Bact

eria

pH

Dis

solv

ed S

olid

s

Sus

pend

ed S

olid

s

Sed

imen

t

Cement Operations X X X X X X X

Fertilizer Storage & Handling X X X X X X X

Sulfur Storage & Handling X X X X X X X X X

Petroleum Products Storage & Handling

X X X X X X X

Agricultural Products Storage & Handling

X X X X X X X X X X X X

Other Chemical Storage & Handling

X X X X X X X X X X X

Food Products Storage & Handling

X X X X X X X X X X

Steel Products Storage & Handling

X X X X X

Metal Salvage / Recycling X X X X X X X

Streets and Roads (> 1 acre paved surface)

X X X X X X X

Railroad Operations X X X X X

X = Pollutant likely to be present in stormwater runoff from the project area



1.4 Site Drainage Characteristics

Describe how the property drains prior to construction and how it will drain after the proposed construction. Identify hard connections and surface flow to the Port’s storm drainage system. Describe the proposed storm water conveyance system. Provide the pre and post construction percent impervious and runoff coefficients.

2 BEST MANAGEMENT PRACTICE SELECTIONS

This section identifies the Best Management Practices (BMPs) selected for the proposed new development to reduce predictable pollutants in runoff entering nearby storm drain systems. The control measures listed herein are taken from Section 3 of the Port’s Development Standards Plan.

Mandatory Minimum BMPs: (Mark Yes or NA as applicable to your project)

Yes NA Reference No. BMP SD-13 Storm drain message and signage SD-11 Roof drain design SD-34 Outdoor material storage area design SD-32 Outdoor trash storage area design SD-31 Outdoor loading / unloading dock area design SD-35 Outdoor repair / maintenance bay design SD-33 Outdoor vehicle, equipment, accessory washing area design SD-30 Fueling Area Design POS-01 Spill Control and Response Measures

Drainage Zone Specific BMPs: (Mark Yes or NA as applicable to your project)

Yes NA Reference No. BMP West Complex SD-10 Conserve Natural Areas SD-10, SD-20, SD-21 Minimize Impervious Areas POS-02 No Net Increase in Runoff Volume or Peak Rate East Complex – North of “A” Street POS-03 Sample Box Installation POS-04 Stabilization of Surfaces East Complex – North of “A” Street POS-05 Track Out Control POS-06 Open Drainage Culverts

Reference Sources for BMP Design and Sizing:



Urban Runoff Quality Management, WEF Manual of Practice No. 23 / ASCE Manual of Practice No. 87, (1998)

http://www.wef.org



Treatment Control BMPs: (Mark selection. Treatment control is mandatory for applicable new development and significant redevelopment. Refer to Section 3.4 of the Port’s DSP.)

Yes No Reference No.

BMP Design Criteria

TC-31 Vegetated buffer strips SQDF TC-30 Vegetated swales SQDF TC-22 Extended detention basin SQDV TC-20 Wet pond SQDV TC-20, MP-20 Constructed wetland SQDV TC-40 Detention basin / sand filter SQDV TC-40, SD-20 Porous pavement detention SQDV TC-32, TC-40 Porous landscape detention SQDV TC-11 Infiltration basin SQDV TC-10 Infiltration trench SQDV TC-40, MP-40 Media filter SQDV MP-50, MP-

51 Wet vaults, oil/water separators, and vortex separators

SQDF

TC-12 Retention / irrigation SQDV POS-99 Alternative and proprietary control measures Variable

3 Treatment Control Measure Sizing

Flow Based Sizing Calculation:

Formula: Stormwater Quality Design Flow (SQDF) = 0.20 in/hr x C x Area

1. The 85th % for hourly rainfall intensity for the

Stockton area = 0.10 in/hr. 2. Design rainfall intensity (I):

I = 0.10 (in/hr) x 2 = 0.20 in/hr 3. Determine the project drainage area (A) in ft2

4. Weighted average runoff coefficient (C) for each individual area 2

5. SQDF = 0.20 in/hr x C x Area

Calculate the SQDF for each of the sub-drainage areas having different coefficients and sum the SQDFs for a total site SQDF.

2 Table 819.2B taken from the Caltrans Stormwater Quality Handbooks, SWPPP/WPCP Preparation Manual Computation Sheet for Determining Runoff Coefficients, February 1, 2003

Table 819.2B

Runoff Coefficients for Developed Areas

Type of Drainage Area Runoff Coefficient

Business:

Downtown areas 0.70 - 0.95

Neighborhood areas 0.50 - 0.70

Residential:

Single-family areas 0.30 - 0.50

Multi-units, detached 0.40 - 0.60

Multi-units, attached 0.60 - 0.75

Suburban 0.25 - 0.40

Apartment dwelling areas 0.50 - 0.70

Industrial:

Light areas 0.50 - 0.80

Heavy areas 0.60 - 0.90

Parks, cemeteries: 0.10 - 0.25

Playgrounds: 0.20 - 0.40

Railroad yard areas: 0.20 - 0.40

Unimproved areas: 0.10 - 0.30

Lawns:

Sandy soil, flat, 2% 0.05 - 0.10

Sandy soil, average, 2-7% 0.10 - 0.15

Sandy soil, steep, 7% 0.15 - 0.20

Heavy soil, flat, 2% 0.13 - 0.17

Heavy soil, average, 2-7% 0.18 - 0.25

Heavy soil, steep, 7% 0.25 - 0.35

Streets:

Asphaltic 0.70 - 0.95

Concrete 0.80 - 0.95

Brick 0.70 - 0.85

Drives and walks 0.75 - 0.85

Roofs: 0.75 - 0.95



Volume Based Sizing Calculation:

Formulas: Stormwater Quality Design Volume (SQDV) = Unit Basin Storage Volume for 80% Annual Capture (Vunit) x Total Area (Atotal) Where Vunit is derived from Figure 2 using the effective imperviousness (Iwq) and Iwq is derived from Figure 1 using the percentage of impervious area of the project. Percentage of impervious area = (area impervious)/Atotal x 100

1. Determine total drainage area (Atotal) 2. Determine the percentage of impervious area

(Ia): Ia = (Impervious area/ Atotal ) x 100

3. Determine the Effective imperviousness (Iwq) using Figure 13.

4. Determine the appropriate drawdown period for the selected BMP.

5. Determine the unit basin storage volume (Vu) using Figure 24.

6. Calculate SQDV SQDV = Vu x Atotal = (Vu “inches”) x (1 ft/12 inches) x (Atotal “acres”) x (43,560 ft2/acre) = ft3

3 Figure 1 is adapted from Urban Drainage and Flood Control District Figure ND-1 of the Drainage Criteria Manual (Volume 3), Revised August 2006, page ND-9 4 Figure 2 is adapted from Urban Drainage and Flood Control District Figure RP-2 of the Drainage Criteria Manual (Volume 3), Revised August 2006, page S-102

Figure 24

Vu

wat

ersh

ed in

ches

For standard development practices with discharge straight to the municipal stormwater sewer system

Runoff directed over grass covered areas before reaching a typical curb and gutter system.

Runoff directed over grass covered areas and to a grassy swale that replaces the curb and gutter system.

t

Figure 13



Reference Resources:

1. CASQA Stormwater BMP Handbook for New Development and Redevelopment http://www.cabmphandbooks.com/Development.asp

2. Urban Drainage and Flood Control District (UDFCD) Drainage Criteria Manual Volume 3, Revised August 2006 http://www.udfcd.org/index.html

3. EPA Stormwater Best Management Practice Design Guide (EPA/600/R-04/121) September 2004 www.epa.gov/nrmrl/pubs/600r04121/600r04121sect4.pdf

Exhibits to Attach to this Site-Specific DSP:

Exhibit A – Project Notification Form Exhibit B - Vicinity Map Exhibit C – Construction Drawings: Provide construction drawings that identify and show all required treatment controls and best management practices. Identify and show on the drawings the pre- and post-development hydraulics including drainage area, hydraulic gradient, infiltration rate, runoff coefficient, impervious areas, and peak flow rate. Show the existing and proposed drainage systems on drawings including all drains, piping, culverts, retention areas, and outfalls. Drawings are to be certified and stamped by a State of California registered Civil Professional Engineer. Exhibit D – Treatment Control Specifications: Provide details about each selected treatment control to include treatment effectiveness for the targeted pollutants, physical specifications, manufacturer information, potential for impacting groundwater, and other design considerations. Exhibit E – Treatment Control Sizing Calculations: Provide assumptions and calculations used for sizing each proposed treatment control practice. Calculations are to be certified and stamped by a State of California registered Civil Professional Engineer. Exhibit F – BMP Maintenance Plan Exhibit G – Signed Maintenance Agreement (Form Provided by the Port)


Appendix E Maintenance Agreement Form


- 1 -

Storm Water Treatment Controls Access and Maintenance Agreement

After signing, return to: Environmental Manager Port of Stockton 2201 W. Washington Street P.O. Box 2089 Stockton, CA 95201 Transmit Copies to: Developer / Tenant Port Environmental Dept. Port Properties Dept. (Original)

TENANT NAME MAILING ADDRESS

FACILITY NAME AND ADDRESS

LEASE NO. THIS AGREEMENT is made and entered into in ________________________, California, this ____ day of __________________, by and between ________________________________ hereinafter referred to as "the Tenant" and the Port of Stockton; WHEREAS, the Tenant leases property ("Property") from the Port of Stockton in the City of Stockton, County of San Joaquin, State of California, depicted in Exhibit A, which are attached hereto and incorporated herein by this reference;


- 2 -

WHEREAS, at the time of initial approval of development project known as ____________________________________________________________ within the Property described herein, the Port required the project to employ on-site control measures to minimize pollutants in urban runoff;

WHEREAS, the Tenant has chosen to install the following control measures, hereinafter referred to as "Treatment Controls", as the on-site control measures to minimize pollutants in urban runoff;

WHEREAS, said Treatment Controls have been installed in accordance with the requirements of the Port of Stockton Development Standards Plan and the Tenant’s plans and specifications accepted by the Port;

WHEREAS, maintenance of said Treatment Controls is the sole responsibility of the Tenant in accordance with the terms of this Agreement;

WHEREAS, the Tenant is aware that periodic and continuous maintenance, including, but not necessarily limited to, sediment removal, is required to assure peak performance of the Treatment Control and that, furthermore, such maintenance activity will require compliance with all Local, State, or Federal laws and regulations, including those pertaining to confined space and waste disposal methods, in effect at the time such maintenance occurs; NOW THEREFORE, it is mutually stipulated and agreed as follows: 1. Tenant hereby provides the Port or Port's designee complete access, of any duration, to the

Treatment Controls and its immediate vicinity at any time, upon reasonable notice, or in the event of emergency, as determined by Port with no advance notice, for the purpose of inspection, sampling, testing of the Treatment Controls, and in case of emergency, to undertake all necessary repairs or other preventative measures at tenant's expense as provided in paragraph 3 below. The Tenant shall retain all operation and maintenance records at the facility for Port inspection, and a copy shall be provided to the Port if requested. Port shall make every effort at all times to minimize or avoid interference with Tenant's use of the Property.

List treatment controls included in the project (use a separate sheet if necessary):


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2. Tenant shall use its best efforts to diligently maintain the Treatment Controls in a manner assuring peak performance at all times. All reasonable precautions shall be exercised by Tenant and Tenant's representative or contractor in the removal and extraction of material(s) from the Treatment Controls and the ultimate disposal of the material(s) in a manner consistent with all relevant laws and regulations in effect at the time. When requested from time to time by the Port, the Tenant shall provide the Port with documentation identifying the material(s) removed, the quantity, and disposal destination.

3. In the event Tenant, or its successors or assigns, fails to accomplish the necessary

maintenance contemplated by this Agreement, within five (5) days of being given written notice by the Port, the Port is hereby authorized to cause any maintenance necessary to be done and charge the entire cost and expense to the Tenant or Tenant's successors or assigns, including administrative costs, attorneys fees and interest thereon at the maximum rate authorized by the Civil Code from the date of the notice of expense until paid in full, and Tenant hereby agrees to pay such charge within 30 days of receipt of Port’s written demand for payment.

4. The Port may require the owner to post security in form and for a time period satisfactory to

the Port of guarantee the performance of the obligations stated herein. Should the Tenant fail to perform the obligations under the Agreement, the Port may, in the case of a cash bond, act for the Tenant using the proceeds from it, or in the case of a surety bond, require the sureties to perform the obligations of the Agreement.

5. In event of legal action occasioned by any default or action of the Tenant, or its successors or

assigns, then the Tenant and its successors or assigns agree(s) to pay all costs incurred by the Port in enforcing the terms of this Agreement, including reasonable attorney's fees and costs.

6. Time is of the essence in the performance of this Agreement.

7. The Tenant agrees to perform the storm water drainage system and treatment control

maintenance as described in the submitted maintenance plan attached to this document.

8. The Tenant’s lease with the Port will be amended to include the agreements included in this document and the attached maintenance plan.


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IN WITNESS THEREOF, the parties hereto have affixed their signatures as of the date first written above. PORT OF STOCKTON By (Name of tenant in bold) By PORT TENANT Name Title PORT ACKNOWLEDGMENT STATE OF CALIFORNIA ) ) ss COUNTY OF SAN JOAQUIN) On before me, (Name, Title of Officer) personally appeared , ( ) personally known to me or ( ) proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacity(ies), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument. WITNESS my hand and official seal. Signature of Notary


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TENANT TENANT ACKNOWLEDGMENT STATE OF CALIFORNIA ) ) ss COUNTY OF SAN JOAQUIN) On before me, (Name, Title of Officer) personally appeared , ( ) personally known to me or ( ) proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacity(ies), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument. WITNESS my hand and official seal. Signature of Notary


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EXHIBIT A

(Maintenance Plan)


port of stockton development standards plan 01jun09 revisi…...1.1 the function of the storm water...

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