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Home My WebLink About2011-112 DEAPR - Hillsborough for Fairview Park Bio-Retention and Grassed Swale BMP Operation and Maintenance Agreement $n/a~~ ~~ Prepared by: Tom King, AICP, CZO, Senior Planner, Town of Hillsborough Planning Department Return to: Orange County c/o Department of Environment Agriculture and Parks & Recreation, P.O. Box 8181, Hillsborough, NC 27278 NORTH CAROLINA ORANGE COUNTY BIO-RETENTION AND GRASSED SWALE BMP (BEST MANAGEMENT PRACTICE) OPERATION AND MAINTENANCE AGREEMENT NAME OF PROJECT: Fairview Community Park NAME OF PROPERTY Orange County - P.O. Box 8181, Hillsborough, NC 27278 OWNERS: Town of Hillsborough - P.O. box 429, Hillsborough, NC 27278 DESCRIPTION OF PREMISES PROJECT ADDRESS: 195 Torain Street, Hillsborough, NC 27278 PARCEL IDENTIFICATION Orange County = 9865-72-5684 NUMBERS: Town of Hillsborough = 9865-82-2122 DESCRIPTION OF PROPERTY: All of the 25.40 acres (owned by the Town of Hillsborough) shown as Recombined Area `B' on the plat and survey by Sununit Consulting entitled "Final Plat Recombination Survey Property Surveyed for Town of Hillsborough" recorded in Plat Book 104, Page 194, of the Orange County Registry, and all of the 10.01 acres (owned by Orange County) shown as Lot 5 on the plat and survey by Summit Consulting entitled "Fairview Park-Phase 1" recorded in Plat Book 104, Page 129, of the Orange County Registry, hereinafter refereed to as "the property". DESCRIPTION OF PROJECT The project consists of a public park containing a picnic shelter with 2 restrooms, a new ball field, 3 tennis courts, 2 basketball courts, one volleyball court; a playground, horseshoe pit, paved walking track/trail and a 44-space parking lot. 3 stormwater BMP devices consisting of one bio-retention cell and 2 grassed swales are provided on site. A copy of the approved plans for the project is on file with the Town of Hillsborough Planning Department. OPERATION AND MAINTENANCE CONDITIONS The property owner will keep a maintenance record on these BMPs. This maintenance record will be kept in a log in a known set location on the project site. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and-the removal efficiency of the BMPs. Important operation and maintenance procedures: Page 1 of 4 Bio-retention Basin Operation and Maintenance • Immediately after the bio-retention cell is established, the plants will be watered twice weekly if needed until the plants become established (commonly 6 weeks). • Snow, mulch or any other material wi1FNEVER be piled on the surface of the bio-retention cell. • Heavy equipment will NEVER be driven over the bio-retention cell. • Special care will be taken to prevent sediment from entering the bio-retention cell. • Once a year, a soil test of the soil media will be conducted. • Replace mulch annually as needed or at a minimum replace and/or add 2to 4 inches every 2 years. After the bio-retention cell is established, the property owner will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches. Records of operation and maintenance will be kept in a known set location on the project site and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP Element: Potential Problem: How Property Owner Will Remediate the Problem: The Entire BMP Trash/Debris is present. Remove the trash/debris The Perimeter of the Bio- Areas of bare soil and/or erosive gullies Re-grade the soil if necessary to remove the retention Cell have formed. gully, and then plant a ground cover and water until it is established. Provide lime application onl . The Inlet Device: Pipe, Stone The pipe is clogged (if applicable). Unclog the pipe. Dispose of the sediment off- Verge or Swale site. The pipe is cracked or otherwise damaged Replace the pipe. if a licable . Erosion is occurring in the Swale (if Re-grade the Swale if necessary to smooth it applicable). over and provide erosion control devices such as reinforced turf matting or riprap to avoid future roblems with erosion. Stone verge is clogged or covered in Remove sediment and clogged stone and replace sediment (if a licable . with clean stone. The Pretreatment Area Flow is bypassing pretreatment area Re-grade if necessary to route all flow to the and/or gullies have formed. pretreatment area. Re-stabilize the area after radin . Sediment has accumulated to a depth Search for the source of the sediment and greater than 3 inches. remedy the problem if possible. Remove the sediment and re-stabilize the retreatment area. Erosion has occurred. Provide additional erosion protection such as- reinforced turf matting or riprap if needed to revent future erosion roblems. Weeds are resent. Remove the weeds, referabl b hand. The Bio-retention Cell: Best professional practices show that Prune according to best professional practices. Vegetation pruning is needed to maintain optimal lant health. Plants are dead, diseased or dying. Determine the source of the problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide lime application to establish the ground cover and other nutrients if a soil test indicates it is necessa Tree stakes/wires are present 6 months Remove tree stake/wires (which can kill the after lantin . trees if not removed . Page 2 of 4 BMP Element: Potential Problem: How Property Owner Will Remediate the Problem: The Bio-retention Cell: Soils Mulch is breaking down or has floated .Spot mulch if there are only random void areas. and Mulch away. Replace whole mulch layer if necessary. Remove the remaining mulch and replace with triple shredded hard wood mulch at a maximum de th of 3 inches. Soils and/or mulch are clogged with Determine the extent of the clogging. Remove sediment. and replace either just the top layers or the entire media as needed. Dispose of the soil in an appropriate off-site location. Use triple shredded hard wood mulch at a maximum depth of 3 inches. Search for the source of the sediment and remed the roblem if ossible. An annual soil test shows that pH has Dolomitic lime shall be applied as recommended dropped or heavy metals have per the soil test and toxic soils shall be removed, accumulated in the soil media. disposed of properly and replaced with new lantin media. The Under Drain System (If Clogging has occurred. Wash out the under drain system. Applicable) The Drop. Inlet Clogging has occurred. Clean out the drop inlet. Dispose of the sediment off-site. _ The dro -inlet is dams ed. Re air or re lace the dro inlet. The Receiving Water Erosion or other signs of damage have Contact the Erosion Control Division of the occurred at the outlet. Orange County Planning and Inspections De artment at 919 245-2575. Grassed Swale BMP Operation and Maintenance • The drainage area of the grassed Swale will be carefully managed to reduce the sediment load to the grassed Swale. • After the first-time fertilization to establish the grass in the Swale, fertilizer will not be applied to the grass Swale The grassed swales will be inspected once a quarter. Records of operation and maintenance will be kept in a known set location on the project site and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP Element: Potential Problem: How Property Owner Will Remediate the Problem• The Entire Length of the Swale Trash/Debris is present. Remove the trash/debris Areas of bare soil and/or erosive gullies Re-grade the soil if necessary to remove the have formed. gully, and then re-sod (or plant with other appropriate species) and water until established. Provide lime and aone-time fertilizer a lication. Sediment covers. the grass at the bottom Remove sediment and dispose in an area that of the Swale. will not impact streams or BMPs. Re-sod if necess Vegetation is too short or too long. Maintain vegetation at a height of approximately 6 inches.. The Receiving Water Erosion or other signs of damage have Contact the Erosion Control Division of the occurred at the outlet. Orange County Planning and Inspections De artment at (919) 245-2575. Operation and Maintenance Asreement Runs with Property: The terms herein contained are binding on the present owners, and their successors in title and interest, and shall henceforth be appurtenant to, and shall run with the title to said real property. *********************************************s************************************************************** Page 3 of 4 I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above and that these restrictions shall be binding on me and my successors in interest. I fizrther agree to notify the Erosion Control Division of the Orange County Planning and Inspections .Department of any problems with the system prior to any changes to the system or responsible party. Printed Name: l• C ~ ~ t TCh• .1~_ Title: Mailing Address: i'.°d, .GG L7L?8 Phone Number: ~ L Z o->J . Signature: Date: ~ ~ ~~ , 20~ Note: The legally responsible party should riot be a homeowners association unless more than SO% of the lots have been sold and a resident of the subdivision has been named the president. N RTH CAROLINA ci.n COUNTY ~~ I, _ / ~ _, a Notary Public, do hereby certify that ~ er' sonally appeared befoi me and acknowledged the clue execution of the foregoing Bio-retention and Grassed Swale BMP era ion and Maintenance Agreement and its requirements. WITNESS my hand and notarial seal, this the ~ day of , 20~~ SEAL ~ J.~Y otary Public My commission expires: ~d ' J / , 20~ w{iL~°Ifr,t / j ` / ~ ~~~~'~ ~ ~ • ~ ~~~:'; ~ i~.. ("'; ~-; ~ ~ , ~, ~ , .J ~ , ~i i\\. \` Page 4 of 4