HARRIS COUNTY FLOOD CONTROL DISTRICT

CONSTRUCTION PHASE

STORMWATER POLLUTION

PREVENTION PLAN

Genoa Red Bluff Stormwater Detention Basin – Phase 2

PROJECT IDENTIFICATION # B509-04-00-E002

JOB NO. 26/0100

PLAN DISTRIBUTION LIST

STORMWATER POLLUTION

PREVENTION PLAN

Genoa Red Bluff Stormwater Detention Basin – Phase 2

PROJECT IDENTIFICATION # B509-04-00-E002

JOB NO. 26/0100

ORIGINAL: Harris County Flood Control District Director, Construction Division

COPY: Electronic- To Distribution List

HARRIS COUNTY FLOOD CONTROL DISTRICT

STORMWATER POLLUTION

PREVENTION PLAN

PROJECT INFORMATION SHEET

Genoa Red Bluff Stormwater Detention Basin – Phase 2

PROJECT IDENTIFICATION # B509-04-00-E002

JOB NO. 26/0100

OWNER:

NAME: Harris County Flood Control District ADDRESS: 9900 Northwest Freeway CITY, STATE, ZIP: Houston, Texas 77092

TELEPHONE: (713) 684-4000

PERSON WHO PREPARED STORMWATER POLLUTION PREVENTION PLAN:

NAME: Danielle N. Woods TITLE: EQS Project Manager COMPANY: Harris County Flood Control District ADDRESS: 9900 Northwest Freeway CITY, STATE, ZIP: Houston, Texas 77092

TELEPHONE:

PERSON WHO WILL CONSTRUCT PROPOSED WORK

(GENERAL CONTRACTOR):

COMPANY:

ADDRESS:

CITY, STATE, ZIP:

CONTACT:

TELEPHONE:

TABLE OF CONTENTS

HCFCD SWPPP – Gen Construction

2022 i

DEFINITIONS OF TERMS………………………………………………………………………………1

1.0 SITE DESCRIPTION…………………………………………………………………

A. Project Description…………………………………..……………………………………….4 B. Description of Construction Activity………………..….………………………… C. Sequence of Major Activities………………………..….…………………………………...4 D. Total Area of Site and Estimated Total Disturbed Area………………………………….4 E. Existing Soil Data………………………………………………………………..……………5 F. Runoff Coefficient Estimate………………………………………………………………….5 G. Existing Water Quality Data……………………………………………………… H. Site Map..……………………………………………………………………………………...5 I. Name of Receiving Water/ Impact to Wetlands or Endangered Species………………..5

2.0 CONTROLS…………………………………………………………………………………………..7

A. Erosion and Sediment Controls……………………………………………………………..7

1. Stabilization Practices – CONSTRUCTION PHASE…….………………

2. Structural Practices………………………………………………………………….8

3. Sequence of Major Activities……………………………………………………….8

B. Stormwater Management………………………………………………………… C. Other Controls………………………………………………………………………………...9

1. Waste Disposal………………………………………………………………………9

2. Offsite Vehicle Tracking …………………………………………………

3. Dewatering/Care & Control of Water…………………………………………….10

4. Demonstration of Compliance with State and Local Regulations…………….10

D. Approved State or Local Plans……………………………………………………………10

3.0 MAINTENANCE …………………………………………………………………………

A. Erosion and Sediment Controls……………………………………………………………11

1. Stabilization Practices……………………………………………………

2. Structural Practices…………………………………………………………………11

B. Maintenance of Controls……………………………………………………………………11 C. Responsible Parties………………………………………………………………………...11

4.0 INSPECTIONS……………………………………………………………………………………...13

A. General……………………………………………………………………………………….13 B. Description…………………………………………………………………………………...13 C. Reports……………………………………………………………………………………….13

5.0 NON-STORMWATER DISCHARGES:…………………………………………………………..15

A. Inventory For Pollution Prevention Plan………………………………………………….15 B. Spill Prevention……………………………………………………………………………...16

1. Material Management Practices…………………………………………………..16

2. Product Specific Practices…………………………………………………………16

3. Spill Prevention Practices………………………………………………………….17

6.0 CONSTRUCTION SPECIFICATIONS……………………………………………………………18

A. Standard Specifications…………………………………………………………………….18 B. Project Specific Specifications.…………………………………………………………….18

7.0 POLLUTION PREVENTION PLAN CERTIFICATIONS………………………………………..19

A. PREPARER'S CERTIFICATION…………………………………………………………..19

B. OPERATOR CERTIFICATION…………………………………………………………….20

C. INSPECTOR CERTIFICATION……………………………………………………………21

8.0 CORPS OF ENGINEERS SECTION 404 PERMIT…………….……………………………….22

9.0 APPENDICES……………………………………………………………………………………….23

HCFCD SWPPP – Construction Phase

2023 V1.0

DEFINITIONS OF TERMS

Best Management Practices (BMPs) - Schedules of activities, prohibitions of practices, maintenance procedures, structural controls, local ordinances, and other management practices to prevent or reduce the discharge of pollutants. BMPs also include treatment requirements, operating procedures, and practices to control construction site runoff, spills or leaks, waste disposal, or drainage from raw material storage areas.

Commencement of Construction - The initial disturbance of soils associated with clearing, grading, or excavation activities, as well as other construction-related activities (e.g., stockpiling of fill material, demolition)

Construction Activity - Includes soil disturbance activities, including clearing, grading, and excavating; and does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of the site (e.g., the routine grading of existing dirt roads, asphalt overlays of existing roads, the routine clearing of existing right-of-ways, and similar maintenance activities). Regulated construction activity is defined in terms of small and large construction activity.

Dewatering - The act of draining accumulated stormwater or groundwater from building foundations, vaults, trenches, and other similar points of accumulation.

Discharge – For the purposes of the TPDES general permit TXR150000, effective March 5, 2023 and this Stormwater Pollution Prevention Plan, (SWPPP), the drainage, release, or disposal of pollutants in Stormwater and certain non-Stormwater from areas where soil disturbing activities (e.g., clearing, grading, excavation, stockpiling of fill material, and demolition), construction materials or equipment storage or maintenance (e.g., fill piles, borrow area, concrete truck washout, fueling), or other industrial Stormwater directly related to the construction process (e.g., concrete or asphalt batch plants) are located.

Final Stabilization - All soil disturbing activities at the site have been completed and a uniform (i.e., evenly distributed, without large bare areas) perennial vegetative cover with a density of at least 70% of the native background vegetative cover for the area has been established on all unpaved areas and areas not covered by permanent structures, or equivalent permanent stabilization measures (such as the use of riprap, gabions, or geotextiles) have been employed.

Impaired Water - A surface water body that is identified on the latest approved Clean Water Act (CWA) §303(d) List as not meeting applicable state water quality standards.

Impaired waters include waters with approved or established total maximum daily loads (TMDLs), and those where a TMDL has been proposed by TCEQ but has not yet been approved or established.

Large Construction Activity - Construction activities including clearing, grading, and excavating that result in land disturbance of equal to or greater than five (5) acres of land. Large construction activity also includes the disturbance of less than five (5) acres of total land area that is part of a larger common plan of development or sale if the larger common plan will ultimately disturb equal to or greater than five (5) acres of land. Large construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of the site (e.g., the routine grading of existing dirt roads, asphalt overlays of existing roads, the routine clearing of existing right-of-ways, and similar maintenance activities.)

Municipal Separate Storm Sewer System (MS4) - A separate storm sewer system owned or operated by the United States, a state, city, town, county, district, association, or other public body (created by or pursuant to state law) having jurisdiction over the disposal of sewage, industrial wastes, Stormwater, or other wastes, including special districts under state law such as a sewer district, flood control or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, that discharges to surface water in the state.

Notice of Change (NOC) – Written notification to the executive director from a discharger authorized under the TPDES general permit TXR150000, providing changes to information that was previously provided to the agency in a notice of intent form.

Notice of Intent (NOI) – An electronic or written submission to the executive director from an applicant requesting coverage under the TPDES general permit TXR150000.

Notice of Termination (NOT) – An electronic or written submission to the executive director from a discharger authorized under the TPDES general permit TXR150000 requesting termination of coverage.

Operator; Primary – the person or persons associated with a large or small construction activity that meets either of the following two criteria:

the person or persons have on-site operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications; or

(b) the person or persons have day-to-day operational control of those activities at a construction site that are necessary to ensure compliance with a SWPPP for the site or other permit conditions (e.g., they are authorized to direct workers at a site to carry out activities required by the SWP3 or comply with other permit conditions).

Outfall - For the purpose of the TPDES general permit TXR150000 and this SWPPP, a point source at the point where Stormwater runoff associated with construction activity discharges to surface water in the state. It does not include open conveyances connecting two municipal separate storm sewers, or pipes, tunnels, or other conveyances that connect segments of the same stream or other water of the U.S. and are used to convey waters of the U.S.

Permittee - An operator authorized under the TPDES general permit TXR150000. The authorization may be gained through submission of a notice of intent, by waiver, or by meeting the requirements for automatic coverage to discharge Stormwater runoff and certain non-Stormwater discharges.

Pollutant - Dredged spoil, solid waste, incinerator residue, sewage, garbage, sewage sludge, filter backwash, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt, and industrial, municipal, and agricultural waste discharged into any surface water in the state. The term "pollutant" does not include tail water or runoff water from irrigation or rainwater runoff from cultivated or uncultivated rangeland, pastureland, and farmland. For the purpose of the TPDES permit TXR150000, the term “pollutant” includes sediment.

Small Construction Activity - Construction activities including clearing, grading, and excavating that result in land disturbance of equal to or greater than one (1) acre and less than five (5) acres of land. Small construction activity also includes the disturbance of less than one (1) acre of total land area that is part of a larger common plan of development or sale if the larger common plan will ultimately disturb equal to or greater than one (1) and less than five (5) acres of land.

Stormwater Associated with Construction Activity - Stormwater runoff from a construction activity where soil disturbing activities (including clearing, grading, excavating) result in the disturbance of one (1) or more acres of total land area, or are part of a larger common plan of development or sale that will result in disturbance of one

(1) or more acres of total land area.

Structural Control (or Practice) - A pollution prevention practice that requires the construction of a device, or the use of a device, to capture or prevent pollution in Stormwater runoff. Structural controls and practices may include but are not limited to:

silt fences, earthen dikes, drainage swales, sediment traps, check dams, subsurface drains, storm drain inlet protection, rock outlet protection, reinforced soil retaining systems, gabions, and temporary or permanent sediment basins.

Temporary Stabilization - A condition where exposed soil or disturbed areas are provided a protective cover or other structural control to prevent the migration of pollutants. Temporary stabilization may include temporary seeding, geotextiles, mulches, and other techniques to reduce or eliminate erosion until either permanent stabilization can be achieved or until further construction activities take place.

1.0 SITE DESCRIPTION

A. Project Description

1. HCFCD Project ID B509-04-00-E002, Genoa Red Bluff Storm Water Detention Basin – Phase 2

2. Located south of Fairmont Parkway and west of Spring Gully (HCFCD Unit ID B109-00-00) in the Armand Bayou (HCFCD Unit ID B100-00-00) Watershed. A map of the site location can be found in project plans.

3. The primary objective of this project is to provide detention basin storage volume reducing the flood water surface elevations along Spring Gully (HCFCD Unit B109-00-00).

4. The current site land use and cover is unused.

5. Access to the site is shown in project plans.

6. The project site lies partly within the limits of the 500% floodplain (formerly the 0.2% annual chance floodplain, shaded Zone X) and within areas of the 100%

7. The project is located in Pasadena, Texas (Precinct 2), 77507, at latitude 29.640515°N, longitude -95.097687°W.

B. Description of Construction Activity

1. The project requires: Install temporary construction fencing as required on Plans to protect tree areas not to be accessed, cleared, or disturbed; Set up erosion and sediment controls including stabilized construction access, silt fence and rock filter dams where required; conduct Clearing and Grubbing; Conduct necessary dewatering based on site condition to ensure groundwater table is at least five feet below excavation surface; Traffic Control Plan Implementation; Set limits of disturbance and staking;

Construct equipment mobilization and access mat installation for heavy excavators/machines; Install pilot channels with design flow lines; . Regrade bottom to drain to pilot channels; Install outfall structures, pipes and weirs and interceptor structures; Install SWPPP protection to all drainage structures; Final grading of the banks, slopes and swales to drain to outfall structures; Install rip-rap at inflow and outflow structures; Hydroseed/SOD on the slopes and new swales; Install temporary Reinforced Silt Fence around Interceptors until sod can be placed; Complete final grading and design check for flow lines of inflow/outflow structures; Remove SWPPP features such as silt fence and check dams and other.

8. Construction of this project is expected to commence in August 2026. The time to complete the project is 450 calendar days. The estimated date of completion is November 2027.

C. Sequence of Major Activities is as follows:

1. Posting of permits and notices.

2. Install temporary Stormwater Pollution Prevention Controls, as noted on attached SWPPP Plan Sheet(s).

3. Site preparation includes clearing and grubbing according to specifications listed in Section 6.0 of this SWPPP.

4. Install erosion protection such as rock filter dams, Reinforced Silt Fence (RSF), tree protection, and construction fencing.

5. Construct planned project.

D. Total Area of Site and Estimated Total Disturbed Area

6. Total Site: 226.95 Acres

7. Total Disturbed Area: 226.95 Acres

E. Existing Soil Data

1. The in-situ soils in the area are primarily fat clays (CH) with very limited silty clay (CL-ML), sa (CL-ML, CL. And CH) with the most common soil type being lean clay.

2. Geotechnical report(s) that has/have been utilized by the Engineer will be available to the Contractor. Contractor may rely upon the accuracy of the “technical data” contained in such reports, but not upon non-technical data, interpretations, or opinions contained therein or for the completeness thereof for Contractor’s purposes. Except as indicated in the immediately preceding sentence, the Contractor shall have full responsibility with respect to subsurface conditions at the site. There is one (1) geotechnical report available for this Project:

• “GEOTECHNICAL INVESTIGATION REPORT, Red Bluff Stormwater Detention Basins, Project ID # B509-04-00-E002 Pasadena, TX. Prepared by TGI Geotechnics, Inc, dated March 28, 2025

F. Runoff Coefficient Estimate (HC Construction Handbook, Appendix A) The runoff coefficient for this area is estimated to be 0.35.

G. Existing Water Quality Data

The Armand Bayou watershed is monitored by the Texas Commission on Environmental Quality (TCEQ) through the Texas Clean Rivers Program (CRP) according to the Texas Surface Water Quality Standards. One or more stream segments are affected by this project and are included in the listing of water bodies that fail to meet water quality standards as required by section 303(d) of the Clean Water Act. The following stream segments are impaired for bacteria TX-1016. Additional water quality data can be obtained through TCEQ’s Surface Water Quality Monitoring (SWQM) database.

H. Site Map

1. Site maps are included in the construction drawings and in Appendix E.

2.0 CONTROLS

TXR15000 permit language found in Appendix B of this SWPPP narrative.

A. Erosion and Sediment Controls

1. Stabilization Practices – CONSTRUCTION PHASE only

a. Stabilized Construction Access, including staging, and parking areas will be installed using coarse aggregate or approved equal, according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

b. Perimeter controls, such as RSF, vegetative buffer strips, rock filter dams, or equivalent will be placed at all downslope boundary locations of the construction area, according to the attached Plan Sheet of Controls. RSF will be installed according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

c. Staggered strip sodding, minimum 2 strips wide, will be placed on earthen slopes and at places along the top of bank where overbank sheet flow is possible and on earthen side slopes to deter rill erosion. This will be done as soon as grade is established. Sod will be installed according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

d. Erosion control and stabilization measures must be initiated as soon as practicable in portions of the site where construction activities have temporarily ceased, except:

(1) Where earth disturbing activities will resume within 21 days on that portion of the site.

(2) Where temporary stabilization measures are infeasible. For this exemption to apply, the contractor must provide a series of BMPs at the point where this portion of the site discharges. These BMPs must retain sediment on site to the extent practicable.

e. HCFCD Construction Division will release portions of the site to HCFCD’s Infrastructure Division – Facilities Maintenance Department (FMT) – Turf Establishment Group (Turf Establishment Group) -- for permanent site stabilization and turf establishment. A maximum 5 acres of area or 1,500 linear feet of ROW may be released at one time. This step requires close coordination between HCFCD CON and FMT.

f. A permanent turf will be established by the Turf Establishment Group upon completion of the required earthwork. Topsoil or soil amendments will be placed on all side slopes by the Construction Contractor. Mulch and other materials may be used in conjunction with seeding. See Specifications Section 6.0 of this SWPPP.

2. Structural Practices

a. Stabilized Construction Access, including staging and parking areas will be installed using coarse aggregate, according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater

Pollution Prevention Details. Sweeping loose dirt from all haul trucks and large construction equipment will be performed at construction exits prior to traveling public roads. Sediment traps shall be constructed for washing of trucks and equipment if performed in areas where there is the potential for pollutants and sediment to enter a drainage system.

b. RSF will be used around stockpiles, material storage areas and disturbed areas which are not protected with sod and have the potential for pollutants and sediment to enter drainage system. Silt fencing will be installed according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

c. Berms will be constructed around onsite fuel containers to prevent spills from entering a drainage system or tanks with a built-in containment system.

d. RSF will be installed as shown on plans to prevent sediment transport into the waterways. Silt fencing will be installed according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

e. Velocity dissipation and armoring will be placed in locations specified on the construction drawings to prevent scouring and erosion. Riprap will be installed according to specifications listed in Section 6.0 of this SWPPP.

f. The basin being excavated through this construction project serves as the required sedimentation basin to contain a 2-year, 24-hour storm from the site.

Sediment and erosion controls are noted and depicted on the SWPPP Plan Sheet of Controls.

3. Sequence of Major Activities

The sequence of major control activities is expected to be as follows:

a. Post Permits and Notices for the TPDES General Permit for Discharges of

Stormwater Associated with Construction Activities.

b. Install Stabilized Construction Access, according to specifications listed in

Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

c. Install RSF, according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

d. Construct berms around refueling containers if tanks do not have built-in containment.

e. Remove and properly dispose of any existing debris, according to specifications listed in Section 6.0 of this SWPPP.

f. Clear and grub the site, as required for construction activities, according to specifications listed in Section 6.0 of this SWPPP.

g. Strip topsoil and/or clear construction area immediately prior to construction only. Topsoil is to be stockpiled and reused on project, according to specifications listed in Section 6.0 of this SWPPP. Place RSF around stockpiles.

h. Construct the proposed project as detailed in plans.

i. Place strip sodding as soon as grade is established, according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

j. Release site or portions of site to FMT to establish vegetative cover over all disturbed areas.

k. At the time when the final portion of the site is released to the FMT, selected controls will remain in place until permanent vegetation is stabilized (70% cover). These controls will be removed upon establishment of permanent vegetative cover.

B. Stormwater Management

1. The permanent pollutant control measure included in this Project is site revegetation, which will act to some degree as a sedimentation trap.

Particulates may settle out of the Stormwater flowing through the vegetated areas as the velocity of flow decreases. Permanent site revegetation will be the responsibility of HCFCD.

C. Other Controls

1. Waste Disposal

a. Waste Materials: All waste material will be collected and stored in a securely lidded metal dumpster rented from _____, a licensed solid waste management company in _____________ [City, State]. The dumpster will meet all local and state solid waste management regulations. All trash and construction debris from the site will be deposited in the dumpster. The trash and debris will be hauled to an approved landfill. No construction waste material will be buried onsite. All personnel will be instructed regarding the correct procedure for waste disposal. Notices stating these practices will be posted onsite and, ______ [same as Cert C], the individual who manages the day-to-day site operations, will be responsible for seeing that these procedures are followed.

b. Hazardous Waste: No hazardous waste is expected to be generated or encountered in this project. In the event that hazardous waste is encountered, all hazardous waste materials will be disposed of in the manner specified by local or state regulation or by the manufacturer. ____, the individual who manages day-to-day site operations, will be responsible for seeing that these practices are followed.

c. Sanitary Waste: All sanitary waste will be regularly collected from the portable units by _____, a licensed sanitary waste management contractor.

2. Offsite Vehicle Tracking

a. A Stabilized Construction Access will be installed to help reduce vehicle tracking of sediments. Sediment stuck to vehicle tires, axles, and other undercarriage components will be removed from vehicles before vehicles can exit the construction site. An excavated or embankment sediment trap will be constructed if Contractor uses a vehicle wash system.

b. The paved streets adjacent to the site entrance will be monitored constantly and cleaned as necessary, to remove any excess mud, dirt, or rock tracked from the site and ensure clean streets at all times. Documentation of inspection and maintenance of the streets is required.

c. BMPs will be installed adjacent to stormwater inlets at all site entrances and along the haul roads to prevent sediment from entering the storm sewer system. Documentation of daily inspection and maintenance of these BMPs is required.

d. Blowing dust will be controlled as necessary by spraying the dust source with water.

3. Dewatering/Care & Control of Water

Ponding stormwater on an active construction site is potentially contaminated.

Dewatering operations must be monitored on all days that dewatering is occurring. Inspection forms can be found in Appendix D.

Pumping of excess water off-site will not be allowed unless a pump filtering system, a vegetative filter strip, an effective sedimentation holding area, or an equal BMP is used for sediment removal before the water is discharged.

4. Demonstration of Compliance with State and Local Regulations

The proposed project will be in compliance with applicable State and local waste disposal and sanitary sewer regulations.

D. Approved State or Local Plans

There are no approved state site plan requirements for stormwater management or erosion and sediment controls. This Project is within the jurisdiction of

UNINCORPORATED HARRIS COUNTY.

The City of Houston, Harris County, and HCFCD jointly manage a Phase I, TPDES MS4 permit. Review/ approval of plans and compliance with local Stormwater Quality Permits is coordinated directly with Harris County Permits, City of Houston Permits, or other local municipality as dictated by project location.

3.0 MAINTENANCE

A. Erosion and Sediment Controls

1. Stabilization Practices

Stabilization practices will be installed according to specifications listed in Section 6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

a. Stabilization of construction access areas.

b. Sodding for erosion control.

c. Hydro-seeding with mulch.

2. Structural Practices

Structural practices will be installed according to specifications listed in Section

6.0 of this SWPPP, and as shown on the attached Stormwater Pollution Prevention Details.

B. Maintenance of Controls

1. All measures will be maintained in good working order. If a repair is necessary, it will be initiated within 24 hours of the inspection report.

2. Sediment will be removed from behind the silt fences when it becomes 1/3 of the height of the fence.

3. The construction access area and associated sediment trap will be kept clean and operational.

4. The BMPs installed at the storm sewer inlets along the haul road and site entrance will be kept clean and operational.

5. Any temporary controls will be assessed for removal or to remain in place before the site or portions of the site is released to the Turf Establishment Group.

C. Responsible Parties

1. _____, the individual responsible for the day-to-day operations, will designate qualified person(s) to properly maintain the function of each structural control throughout site construction activities.

2. During active construction, the construction contractor will be responsible for maintenance of all control measures on the site. Upon completion of construction, construction contractor will remove controls at the direction of the project engineer and in coordination with HCFCD FMT. If silt fence is required during turf establishment phase, the FMT or designated contractor will be responsible for this control during Turf Establishment.

3. Control measures of this SWPPP will be revised as appropriate, but in no case later than fourteen (14) calendar days following the inspection.

4.0 INSPECTIONS

A. General

1. _____, the site superintendent responsible for the day-to-day operations has designated _________, an inspector with knowledge of this SWPPP contents, the proposed construction activities, and the applicability of CGP to the project.

2. Inspections of the site will continue for the duration of construction activity, even if a portion of the site has been released to the Facilities Maintenance Turf Establishment contractor.

3. As a minimum, the site and the reach within ¼ mile of all project access points will be inspected at least once every seven (7) calendar days. After the site or a portion of the site is finally stabilized, inspections will be at least once every month.

4. Based on the results of the inspections, the site descriptions and control measures of this SWPPP will be revised as appropriate, but in no case later than fourteen (14) calendar days following the inspection.

5. Copies of all Local Regulatory Inspection reports, if submitted to Owner/Operator and Notices of Violation, if applicable, should be included in Appendix D – Inspection Forms.

B. Description

1. Check to make sure postings of Notices and Permits are at all Project access points.

2. Disturbed areas and areas used for storage of materials that are exposed to precipitation will be inspected for evidence of, or the potential for, pollutants entering the drainage system.

3. Locations where vehicles enter or exit the site will be inspected for evidence of offsite sediment tracking.

4. Permanent seeding areas will be inspected for bare spots, washouts, and unhealthy growth.

5. Silt fences will be inspected for depth of sediment, tears, fabric, or wire attachment to the posts, and fence post movement.

6. Dewatering locations must be inspected on each day that they are in use.

Inspect active flow, in place and functional structural BMPs, and contaminated stormwater, the estimated flow rate, and times of dewatering.

C. Reports

1. After each inspection, the inspector will complete the applicable inspection form attached. A copy of each completed inspection form will be submitted to the Harris County Flood Control District Construction Division (HCFCD

CON).

2. One inspection form is used, per Appendix D.

3. A copy of the modified (redlined) SWPPP Plan Sheet of Controls will be submitted to HCFCD CON prior to final release of the site to HCFCD FMT.

4. Final copy of the SWPPP, with modifications, will be submitted to HCFCD CON with the Final Invoice.

5.0 NON-STORMWATER DISCHARGES:

The following eligible non-Stormwater discharges at the site will be allowed only when such flows are diverted to site erosion and sediment control measures as detailed in Section 2 Controls:

discharges from firefighting activities (firefighting activities do not include washing of trucks, run-off water from training activities, test water from fire suppression systems, and similar activities);

uncontaminated fire hydrant flushings (excluding discharges of hyperchlorinated water, unless the water is first dechlorinated and discharges are not expected to adversely affect aquatic life), which include flushings from systems that utilize potable water, surface water, or groundwater that does not contain additional pollutants (uncontaminated fire hydrant flushings do not include systems utilizing reclaimed wastewater as a source water);

water from the routine external washing of vehicles, the external portion of buildings or structures, and pavement, where detergents and soaps are not used and where spills or leaks of toxic or hazardous materials have not occurred (unless spilled materials have been removed; and if local state, or federal regulations are applicable, the materials are removed according to those regulations), and where the purpose is to remove mud, dirt, or dust;

uncontaminated water used to control dust;

potable water sources including waterline flushings (excluding discharges of hyperchlorinated water, unless the water is first dechlorinated and discharges are not expected to adversely affect aquatic life);

uncontaminated air conditioning condensate;

uncontaminated ground water or spring water, including foundation or footing drains where flows are not contaminated with industrial materials such as solvents;

and lawn watering and similar irrigation drainage.

A. Inventory for Pollution Prevention Plan

1. The materials or substances listed below are expected to be present onsite during site construction:

a. Riprap (rock or concrete)

b. Fertilizers

c. Fuels

d. Wood

e. Lubricants

f. Steel Products

g. Tackifier

B. Spill Prevention

1. Material Management Practices

2. The following are the material management practices that shall be used to reduce the risk of spills or other accidental exposure of materials and substances to Stormwater runoff.

a. Good Housekeeping: The following good housekeeping practices will be followed onsite during construction activities.

(1) An effort will be made to store only enough products required to do the job.

(2) All materials stored onsite will be stored in a neat, orderly manner in their appropriate containers and, if possible, under a roof or other enclosure.

(3) Products will be kept in their original containers with the original manufacturer's label.

(4) Substances will not be mixed with one another unless recommended by the manufacturer.

(5) Whenever possible, all of a product will be used up before disposing of the container.

(6) Manufacturers' recommendations for proper use and disposal will be followed.

(7) The site superintendent will inspect daily to ensure proper use and disposal of materials onsite.

b. Hazardous Products: These practices will be used to reduce the risks associated with hazardous materials if hazardous materials are used.

(1) Products will be kept in original containers unless they are not resealable.

(2) Original labels and material safety data will be retained; they contain important product information.

(3) If surplus product must be disposed of, manufacturers or local and State recommended methods for proper disposal will be followed.

3. Product Specific Practices

4. The following product specific practices shall be followed onsite:

a. Petroleum Products: All onsite vehicles will be monitored for leaks and receive regular preventive maintenance to reduce the chance of leakage.

Petroleum products will be stored in tightly sealed containers, which are clearly labeled. Any asphalt substances used onsite will be applied according to the manufacturer's recommendations.

b. Fertilizers: Fertilizers used will be applied only in the minimum amounts recommended by the Infrastructure Division Specifications. Once applied, fertilizer will be worked in the soil to limit exposure to Stormwater. Storage will be in a covered location – away from possible transport by stormwater.

Contents of any partially used fertilizer containers will be removed from the site or stored under cover to avoid exposure to stormwater.

c. Concrete Trucks: Concrete trucks will only be allowed to wash out or discharge surplus concrete or drum wash water in a designated concrete truck wash out area. This area must be clearly marked with a sign indicating it as the “Concrete Washout Area (CWA).” The CWA area shall be contained in such a manner as to prevent discharges directly into the receiving water(s). Commercially available solutions, excavated traps, earthen embankment traps, or filter fabric fences may be used for containment. The designated area must be stabilized prior to project completion to prevent material from entering the receiving water.

5. Spill Prevention Practices

6. In addition to the good housekeeping and material management practices discussed in the previous sections of this plan, the following practices shall be followed for spill prevention and cleanup:

a. Manufacturer's recommended methods for spill cleanup will be clearly posted, and site personnel will be made aware of the procedures and the location of the information and cleanup supplies.

b. Materials and equipment necessary for spill cleanup will be kept in the material storage area onsite. Equipment and materials will include but not be limited to brooms, dust pans, mops, rags, gloves, goggles, kitty litter, sand, sawdust, and plastic and metal trash containers specifically for this purpose.

c. All spills will be cleaned up immediately after discovery.

d. The spill area will be kept well-ventilated, and personnel will wear appropriate protective clothing to prevent injury from contact with a hazardous substance.

e. Spills of toxic or hazardous material will be reported to the appropriate State or local government agency, regardless of the size.

f. The spill prevention plan will be adjusted to include measures to prevent this type of spill from recurring and how to clean up the spill if there is another one. A description of the spill, what caused it, and the cleanup measures will also be included.

g. _____, the site superintendent responsible for the day-to-day site operations, will be the spill prevention and cleanup coordinator. They will designate at least one other site personnel who will receive spill prevention and cleanup training. These individuals will each become responsible for a particular phase of prevention and cleanup. The names of responsible spill personnel will be posted in the material storage area.

6.0 CONSTRUCTION SPECIFICATIONS

A. Standard Specifications The following specifications are included in the Harris County Flood Control District 2005 Standard Specifications Book to comply with the Stormwater Pollution Prevention Plan:

a. Section 01110 – Summary of Work

b. Section 01270 – Measurement and Payment (as revised in bid package)

c. Section 01562 – Construction Fence

d. Section 01565 – General Source Controls

e. Section 01580 – Project Signs

f. Section 02361 – Reinforced Silt Fence

g. Section 02365 – Stabilized Construction Access

h. Section 02378 – Riprap and Granular Fill

i. Section 02379 – Geotextiles for Erosion Control Systems

j. Section 02911 – Topsoil

k. Section 02921 – Turf Planting Zone Preparation

l. Section 02922 – Sod

m. Section 02923 – Broadcast Seeding

n. Section 02925 – Hydromulch- Hydroseeding

B. Project Specific Specifications:

7. The following project specific specifications are included in the construction documents for additional measures required to comply with the Stormwater Pollution Prevention Plan: NONE

7.0 POLLUTION PREVENTION PLAN CERTIFICATIONS

A. PREPARER'S CERTIFICATION

Project Name and Location:

Project Identification #

Project Name:

Location:

At:

8. Latitude: °N;

9. Longitude: °W

I certify that to the best of my knowledge, this Stormwater Pollution Prevention Plan presented herein has been prepared in accordance with the TPDES Construction General Permit (TXR150000). Contents of this narrative document, TCEQ Notice of Intent, and other supporting attachments are, to the best of my knowledge and belief, true, accurate, and complete.

Signature: _______________________________ Date: __________ Name:

Title: EQS Project Manager Company: Harris County Flood Control District

B. OPERATOR CERTIFICATION

At:

10. Latitude: °;

11. Longitude: °W

I certify under penalty of law that I understand the terms and conditions of the general Texas Pollutant Discharge Elimination System (TPDES) permit that authorizes the Stormwater discharges associated with construction activity from the construction site identified as part of this certification. Further, by my signature, I understand that I am becoming a co-permittee, along with the owner(s) and other contractors and subcontractors signing such certifications, to the general TPDES permit for the Stormwater discharges associated with construction activity from the identified site. As a co-permittee, I understand that I, and my company, are legally required under the Clean Water Act, to ensure compliance with the terms and conditions of the Stormwater pollution prevention plan developed under the TPDES permit and the terms of the TPDES permit.

Title:

Company:

C. INSPECTOR CERTIFICATION

At:

12. Latitude: °;

13. Longitude: °W

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

Name:________________________________________________________

Title:

Company:

8.0 CORPS OF ENGINEERS SECTION 404 PERMIT

1. This project does not require a Clean Water Act Section 404 Permit from the U.S. Army Corps of Engineers (USACE) because no Jurisdictional Waters of the US (WOTUS) will be impacted OR

2. The Project will impact ____ acres of jurisdictional WOTUS and mitigation requirements have been included.

3. If the projects impact jurisdictional WOTUS, the U.S. Army Corps of Engineers has issued Individual Permit No. __________

4. USACE permits and Natural Resource Documents are located in Appendix F

5. OR

6. Nationwide Permit No. ___________.

7. OR

8. Regional General Permit No.________________ for this project.

9.

10. Contractor must adhere to the terms and conditions specified within the permit.

11.

12. The Project will not impact threatened and endangered species and associated habitat. OR

13. The Project has the potential to impact ________ species habitat. Survey or mitigation has been conducted to avoid or minimize the potential for impacts.

9.0 APPENDICES

APPENDIX A

NOTICE OF INTENT (NOI)

ACKNOWLEDGEMENT CERTIFICATES

FOR PRIMARY OPERATORS

(to be inserted upon receipt from TCEQ)

NOTICE OF TERMINATION (NOT)

APPENDIX B

TPDES PERMIT LANGUAGE

APPENDIX C

CONSTRUCTION SITE NOTICE

APPENDIX D

INSPECTION FORMS

APPENDIX E

PLAN SHEET OF CONTROLS

APPENDIX F

USACE Permit and Natural Resource Documents