SectJ-Atch8_StormWaterPlan-SWPPP_6424-S-11-0003_19aug11.pdf

Mark.Luckritz Text Box

SOLICITATION NUMBER: AG-6424-S-11-0003

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SECTION J - ATTACHMENT 8

STORM WATER POLLUTION PREVENTION PLAN (SWPPP)

Mark.Luckritz Text Box Project: USDA NRCS Missouri Zell EWP-FPE Restoration Federal Construction Contract

Mark.Luckritz Text Box *8 total pages

Mark.Luckritz Text Box document date: 19 Aug 11

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AG-6424-S-11-0003, J-8, First Page, Pg. 1

NRCS-USDA File Code: 210-12

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STORM WATER POLLUTION PREVENTION PLAN

Site MoDNR EWPP-FPE Linn Co., Missouri NPDES Permit No. MO-R100033

Site Description (See Exhibit 1) Sec. 10, 11 & 15, T57N R21W, Linn Co., MO

The subject site is currently levied fallow river bottom farmland recently enrolled in the Emergency Watershed Protection Program-Flood Plain Easement (EWPP- FPE). The proposed construction will result in a large section of the floodplain of Locust Creek being returned to actions of the creek and restored to pre-farming conditions with ephemeral pools and raised berms for wildlife habitat. The easement is divided into two tracts, west and east. The West site is 1165 acres in size and lies between Locust Creek and borders Higgins Ditch on the east.

The East site is 301 acres in size and borders Locust Creek on the east.

Description of Best Management Practices (BMP’s) One or more of the following temporary or permanent BMP’s will be installed or practiced on the site. Other practices not listed may be used during the course of construction if deemed necessary by NRCS in order to comply with permit requirements. Detailed descriptions of the BMP’s are provided on the Pollution and Erosion Control Detail Sheet (Exhibit 2), and/or the applicable Construction Specification Sections of the Construction Contract as indicated below.

Brush Pile Filters (005) Culverts (005) Protective Dikes (005) Sediment Basins (005) Seeding/Mulching (006) Silt Fence (005& 216) Straw Bale Filters (005) Temporary Mulching (006) Underground Outlets (005) Rock Outlets (719) Grass-lined Channels (005) Rip Rap Channels (005 & 719) Erosion Control Blankets (720) Plastic Netting (712) Diversions (005) Grass Filter Strips (005)

Housekeeping – Handling, storage and disposal of chemical pollutants such as fuels, lubricants and human waste will be in accordance with Construction Specification 005 of the Construction Contract and with all applicable state and federal regulations concerning storage, dispensers, spill prevention, control and counter measures. An equipment parking area is designated on the Pollution and Erosion Control Plan (Exhibit 3).

Disturbed Areas Clearing and grubbing and borrow limits are shown on Exhibit 3. In addition, vegetation and top soil will be stripped from foundation of dikes, berms and floodways. The total area to be disturbed is approximately 250 acres.

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Installation of BMP’s BMP’s will be installed at the locations shown on the Pollution and Erosion Control Features drawing (Exhibit 3). Installation will be in accordance with the appropriate Construction Specification, the Pollution and Erosion Control Details drawing (Exhibit 2), and other applicable drawings.

Temporary and Permanent Non-Structural BMP’s

1. Staging of activities – Stripping, clearing, grubbing and earthwork activities will be staged in accordance with Construction Specification 005.

2. Temporary mulching – Disturbed areas will not be allowed to remain exposed during extended periods of construction inactivity. Temporary mulch will be applied in accordance with Construction Specification 005 and 006, and the General Clauses of the contract.

3. Silt fences – Silt fences will be installed in accordance with Construction

Specification 216 and the Pollution and Erosion Control Details (Exhibit 2) as shown on Exhibit 3.

4. Seeding and Mulching – Permanent seeding and mulching will be installed on all disturbed areas in accordance with Construction Specification 006.

Inspection NRCS will inspect the construction site at least once per week during periods of construction activity to ensure all installed BMP’s and other pollution control measures are properly installed, operating and maintained. In addition, NRCS will conduct a site inspection within 72 hours following heavy rains provided the disturbed areas have not been finally stabilized with permanent BMP’s and vegetation. During site inspections, locations where storm water leaves the site (below the sediment basin) will be inspected for evidence of erosion or sediment deposition. Any deficiencies found during inspections will be corrected within seven calendar days. NRCS will promptly notify the site contractor responsible for operation and maintenance of the BMP’s of any deficiencies.

A log of each inspection (NRCS-USDA Form MO-ENG-C95, Exhibit 4) will be kept in the in the project file.

Amendments This SWPPP will be amended and updated during the term of the land disturbance activity when:

a. Design, operation, or maintenance requirements of BMP’s is changed;

b. Design of the construction project is changed in a manner that could significantly affect the quality of the storm water discharges;

c. NRCS inspections indicate deficiencies in the SWPPP or any BMP;

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d. MDNR notifies NRCS of deficiencies in the SWPPP;

e. The SWPPP is determined to be ineffective in significantly minimizing or controlling erosion and sedimentation (e.g., there is visual evidence, such as excessive sediment deposits in streams or channels);

f. Total Settleable Solids from storm water outfall exceed 2.5 ml/L/hr; or

g. MDNR determines violations of Water Quality Standards may occur or have occurred.

Sampling and Effluent Limitations Although there are no routine sampling requirements, discharges from the site (Settleable Solids) are limited to a maximum of 2.5 ml/L/hr for each storm water outfall.

Reporting of Other Discharges

1. Hazardous Substance and Oil Spill Reporting: Refer to Section B, #14 of Part

I of the Standard Conditions that accompany the general permit.

2. Removed Substances: Refer to Section B, #6 of Part I of the Standard

Conditions that accompany the general permit.

3. Change in discharge: In the event soil contamination or hazardous substances are discovered at the site during land disturbance activities, NRCS will notify MDNR in writing.

Records Records required by permit, including a copy of the General Permit, this SWPPP including all amendments, results of any monitoring and analysis, and all site inspection records will be kept at the NRCS WET Office, 1100 Morton Parkway, Chillicothe MO 64601 until the construction contract for the site is completed and closed. After closure of the construction contract the records will be kept in the NRCS State Office in Columbia, Missouri for a period of at least three years from the date of the Letter of Termination.

NRCS-USDA MO-ENG-C95

Rev. 9-03

File Code: 210-12

NOTE: Conduct inspection and complete report weekly or within 24 hours after heavy rainfall.

Original copy of this completed form to be kept on file at project office and to become part of Contract Folder. Send one copy of completed form to NRCS State Construction Engineer.

STORMWATER POLLUTION PREVENTION PLAN

SITE INSPECTION REPORT

Inspector’s Name: ___________________________ Date of Inspection: _________

Site: _________________ Watershed: ________________________________

Ia. Observations relating to the effectiveness of the best management practices (BMP’s):

Satisfactory Deficient N/A

1. Silt fences around stockpiles ____ ____ ____

2. Silt fences around disturbed areas ____ ____ ____

3. Location of stockpiles ____ ____ ____

4. Protective dikes ____ ____ ____

5. Diversion channels ____ ____ ____

6. Rock gutters ____ ____ ____

7. Sediment basins ____ ____ ____

8. Temporary mulching ____ ____ ____

9. Seeding/mulching ____ ____ ____

10. Grass Filter Strips ____ ____ ____

11. Dust Control ____ ____ ____

12. Housekeeping ____ ____ ____

13. Other (list)______________ ____ ____ ____

Ib. Briefly describe deficiency(ies) for each BMP determined to be deficient.

(Identify by # above. Use other side of form if necessary.)

II. Briefly describe actions required to correct deficiencies found: (Identify by BMP # above if multiple deficiencies. Notify contractor responsible for maintaining BMPs.)

III. Describe actions taken to correct deficiencies: (Identify by BMP #)

IV. List areas where prior land disturbance operations have permanently or temporarily stopped:

INSPECTOR’S SIGNATURE: _____________________________

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Mark.Luckritz

AG-6424-S-11-0003, J-8, Last Page, Pg. 8