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HomeMy WebLinkAbout20021883 Ver 1_Monitoring Report_20120601PRESTONWOOD COUNTRY CLUB HATCHET's GROVE EEP ID (289) USACE ACTION ID # 200320302; 200420774 DWQ 401# 02 -1883; 04 -0353 CLOSEOUT REPORT a� 11-17 W�Dms7 G�TIiIJf�� Vv) MITIGATION PROJECT TYPE Stream and Riparian Buffer Project Setting & Classifications County Wake General Location Ca /Morrissville Basin: Neuse Ph sio ra hic Region: Piedmont Ecore ion: Triassic Basi USGS Hydro Unit: 03020201080010 NCDWQ Sub - basin: 03 -04 -02 Wetland Classification NA Thermal Regime: Warm Trout Water: No Monitoring Year 5 Nov 2009 Supplemental Planting Dormant 09 -10 Project Performers Nov 2010 Source Agency: WRP /EEP etc Designer: S & EC Monitoring Firm S &EC; KCI Channel Remediation NA Plant remediation EEP/WRC /Axiom /River Works Property Interest Holder EEP Overall Project Activities and Timeline Milestone Month -Year Project Instituted July-2002 Permitted Jan 2003 Construction Completed May 2004 As -built survey Sept 2004 Monitoring Year -1 Oct 2005 Monitoring Year -2 Sep-2006 Monitoring Year 3 July 2007 Monitoring Year 4 Oct 2008 Monitoring Year 5 Nov 2009 Supplemental Planting Dormant 09 -10 Monitoring Year 6 Nov 2010 Supplemental Planting Dormant 10 -1 l Visual monitoring and bank pins 2011 -2012 Closeout Submission June 2012 " Beaver began colonizing the site in 2008 -2009 with 24 beaver and 18 dams removed as part of 5 separate control efforts between 2009 and 2012. Project Settina and Background Summary The project involved the rehabilitation of approximately 4100 feet of Hatchet's Grove and a smaller tributary ( Meadowview creek), both of which are tributaries to Crabtree Creek in Wake County. General location and setting information can.be found in the table above. The project channels were originally straightened and dredged for agricultural purposes through the early 1990s and the surrounding land use was subsequently converted to a golf course and condominium/apartment complexes as part of the Prestonwood development. The existing channel was subject to multiple direct and indirect stressors related to these land uses to include: maintenance of golf course turf to the top of bank; direct piping of stormwater outfalls; numerous asphalt paths; 6 bridge crossings; multiple utilities; fairway under- drains; and significant watershed changes related to development. The combination of prior land uses resulted in a straightened F channel that was incised (BHR 1.5 -2.6; mean 1.9) and migrating laterally, generating frequent bank erosion with many areas exhibiting a very high potential for high rates of erosion (see pre- existing photos below). The project involved rehabilitation of a pattern dimension and profile using natural channel design techniques with an E channel design target and a priority II approach to provide improved bankfull floodplain connection. Structures were employed for grade control, habitat and bank protection as well. In addition a fairway swale and drainage system was installed in the alignment of the existing channel to intercept and collect fairway runoff from the south side of the channel, which drains to a large golf course detention/irrigation pond located at the bottom of the project to intercept nutrients and other pollutants that would otherwise drain directly to the project channel. The combination of BMPs employed was calculated/projected to have reduced TN inputs by 35% compared to pre - existing drainage practices/patterns. The site was subject to 6 storm events in the first 6 months that produced discharges that met or exceeded bankfull, 3 of which produced flow elevations 2 -3 feet above the bankfull bench (see photo below in hydrology section). Much of this was in association with the remnants of tropical storms Frances, Gaston, Ivan, and Irene. This generated some bank erosion, but was estimated to affect 1 -2 %. Over the following 2 years additional bank erosion occurred totaling —12% ( -950 feet) of the project bank footage, which according to the monitoring firm steadily stabilized thereafter with the continued development of site vegetation to approximately —8.5% (-650 feet) by 2012. Approximately half of this represents former occurrences of erosion that have demonstrated very little change in response to subsequent bankfull events indicating these former adjustments have arrested in these areas with uncertainty as to whether the remaining half(-300 feet) has arrested/slowed. The design cross - sectional area was 55 SF but the As -built mean was reported at approximately 43 SF, so the channel may have been somewhat undersized, especially given the urban nature of the watershed. Several other factors recognized today as potential contributors to some of the observed adjustments include: structure placement downstream of meander bends increasing in- channel storage capacity (i.e., pools in the upstream section of riffles/runs); E channel design targets without expansive floodplains and advanced woody vegetation; Priority 2 floodplains and sub - soils; meandering floodplains; ponds in the proposed alignment (i.e., potential for fine legacy sediments); and watershed changes. The placement of cross -vanes downstream of meanders was typical of the time of the project design, but limited corridor widths often made for short riffles and placement of full cross -vanes at the very bottom of the meanders has contributed to a greater extent of pool habitat in the profile. The 295 foot Meadowview tributary systemically downcut and is largely in a double sewer easement and is not being sought for credit. Even with the enlargement of the cross - section in areas with either erosion or structure pool scour, this has not significantly impacted floodplain access. Six overbank events have been documented from 2005 to March 2012. This is a minimum estimate given the methodology of a simple crest gauge and use of flood debris and deposition indicators. It is highly likely other events occurred that were masked by larger, more recent events in between observation intervals. Moreover, this count does not include the 6 events noted by the designer in the 6 months immediately after construction, although the majority of these were tropical remnants and were larger events with larger return intervals. An event recorded in 2012 was captured with a continuous gauge and was associated with a series of — 0.5 inch rain events spread out over a 72 hour period totaling —1.5 inches. This resulted in a significant flood event, where sustained flood Page 2 of 18 waters approximately 0.5 feet deep were observed to the outer edge of the floodplain in most locations. Although the intensity of these 3 events was about 1 inch per hour, the antecedent rain to this series of events was below normal, so while this event was of some significance it was by no means rare and yet resulted in the flooding observed (see photos in hydro section below). Additionally, the presence of flood sediment deposition and evidence of natural levee construction is abundant. The latter has also contributed to enlargement of the cross- section in some areas. The aforementioned 10 -12% bank erosion that developed earlier in the projects history was scattered over the projects extent. The monitoring reports in the years subsequent to the onset of these erosion areas indicated a trend of re- stabilization with the onset of vegetation. To help determine the degree to which the erosional areas had arrested, EEP installed 22 bank pins in areas where previous erosion had occurred. These were installed in fall of 2011 and these were examined after the aforementioned flood event in March 2012, where 1 pin showed significant exposure (0.8 feet), 2 demonstrated minor erosion (0.1 feet) and 2 could not to relocated, but this was likely due to the a loss of the marking tape for their location in the flood event given the lack of any obvious fresh erosion in the vicinity. The remaining pins demonstrated no exposure in the flood event supporting the prior observations that the majority of the erosional areas sampled represent prior adjustments that have since arrested. So, approximately 8.5% (-650 feet) of the project banks currently exhibit some level of erosion with about 300 feet (341/6) of that appearing to have arrested due to a lack of movement when exposed to more recent bankfull events with the other half potentially still active. The vegetation density has far exceeded regulatory requirements with all plots meeting the 320 stem per acre requirement with an average of 647 stems and 985 stems per acre for planted and total counts, respectively. The species count ranged from 2 -8 across the plots. Invasives presence on the site is minimal. Beaver have taken a fair number of trees over the projects history, particularly in the lower half of the project and have been removed several times over the last 4 years. Wooded densities are generally good site wide, but were low in some areas and were supplemented with 5 -10 gallon containerized material that included soil amendments on 2 occasions during the periods indicated in the table above. Some areas while they possess adequate density have exhibited slower growth rates due to the PH subsoils. Goals and Objectives 1. Construct a stream channel with the appropriate cross - section, pattern and profile that is stable and will not aggrade or degrade 2. Improve and create bed form diversity (riffles, runs, pools and glides) 3. Construct a floodplain ( bankfull bench) that is accessible at the proposed bankfull channel elevation (I'll restoration) 4. Ensure channel and stream bank stabilization by integrating grade control structures, root wads, and native vegetation in conjunction with the eradication of modification of current grounds maintenance practices 5. Establish a native forested riparian plant community within a minimum of 30 feet, when possible, from the edge of the restored reach. 6. Integrate existing golf course uses with the proposed restoration plan providing aesthetic and education values. Success Criteria The success criteria specified in the mitigation plan called for the following: Stream stability Vegetation densities of 320 stems per acre at year 5. Page 3 of 18 Table 1 Restoration Segment /Reach Pre — Construction (acreage /linear feet Mitigation Approach Watershed Area As -Built Linear Footage /Acreage Mitigation Ratio* Mitigation Units (SMU/WMU) STREAM WMU (Acre -BMU) 3,417 NA NA Mainstem 3200 R 3.7 3828 1.2067 3417 Meadowview Trib 300 R 0.23 295 0 0 Sum 4123 3417 WETLAND NA MITIGATION UNIT TOTALS Stream Mitigation Units Riparian Wetland Non - riparian Total Riparian Riparian Buffer Nutrient Offset (SMU) Units Wetland Units WMU (Acre -BMU) 3,417 NA NA NA 0.457 NA * Ratio incorporates reductions related to crossing exclusions, 557 feet of utility and playover at a 50% credit reduction (2:1), 351 feet at a 25% credit reduction (1.333:1) for playover in the middle of the project and the loss of the tributary due to the combined factors of systemic downcut and near complete capture in a sewer easement. These reductions are all delineated in Fig 1. Page 4 of 18 N Feet 0 200 400 800 1,200 1,600 5 Figure 2. Prestonwood Watershed Topography •w HATCHE75 ORML TRMT, WAMRSt£9 AREA 5.7 Mi R. , 11 `�-•1 .e. .� '•tom_ � `sM WA EASHM AREA nn as : °y FIr RiE 5 Sod & EnviroDnictm l Caosnitaafs. PA� Prestonwood Golf Course Supplemental Planting N Feet w$ 0 200 400 800 1.200 1.600 Nwae RWer Bade, Haichd's Gwrc.XS R4 Neax Rher Bade, Hatchet'. G-­ XS R2 294 298 296 298 296 294 ; 5 � 292 - 291. 268 286 296 294 ___.I+bedpoec.Grt. 290 -n1Y4e s 288 284 - MY -01 -me -02. N6A6 W 286 n 294 - - MY -0S.]2ii. 6 W., W. a93 § 290 • ]_rn2'6r r 284 292 i 4 W 268 282 U 10 20 30 40 sU 60 70 Ro S'maon U an o 2'. J 290 284 0 10 20 30 40 s0 — — 60 70 288 Smear IRrtl 286 0 10 20 30 40 50 60 Smrron (fee0 Nwae RWer Bade, Haichd's Gwrc.XS R4 Neoae River Berle, Hahhet'r Grove XS B3 294 298 296 296 294 ; 5 � 292 - 291. 268 286 _c _ _ _, _AroM _..roba 294 ___.I+bedpoec.Grt. 290 -n1Y4e s 288 284 - MY -01 -me -02. N6A6 W 286 0 292 - MY -0S.]2ii. 6 W., W. a93 § 290 • ]_rn2'6r r 284 i 4 W 268 282 U 10 20 30 40 sU 60 70 Ro S'maon U an o 2'. 284 0 10 20 30 40 s0 — — 60 70 Smear IRrtl Nwae RWer Bade, Haichd's Gwrc.XS R4 294 294 298 296 292 294 ; 5 � 292 - 291. 268 286 _c _ _ _, _AroM _..roba _G _ _S_h_e_r _ _Bd_e_, _ _H_e_th_e(k_e_e ___.I+bedpoec.Grt. 290 -n1Y4e s 288 284 - MY -01 -me -02. N6A6 W 286 20 30 40 SU Station (I et) - MY -0S.]2ii. 6 W., W. a93 ]_rn2'6r r 284 282 U 10 20 30 40 sU 60 70 Ro S'maon U an Page 8 of 18 295 293 5 291 c 289 y � 287 285 283 Neu. River Bads, FlaleYelY Grme,XB PJ -MY-0r - MYU0.8cAg6 - MY -05.7/IbD9 �- ASt'-0r. W1W 10 0 10 20 3U 40 50 60 70 80 smrion (fret) Na__ Neer. River Bale, Ha/eheMr Crove, XS PT 294 298 296 292 294 ; 5 � 292 - 291. 268 286 _c _ _ _, _AroM _..roba _G _ _S_h_e_r _ _Bd_e_, _ _H_e_th_e(k_e_e 288 286 s 284 MYNb13N7 U lU 20 30 40 SU Station (I et) 60 70 6 295 293 5 291 c 289 y � 287 285 283 Neu. River Bads, FlaleYelY Grme,XB PJ -MY-0r - MYU0.8cAg6 - MY -05.7/IbD9 �- ASt'-0r. W1W 10 0 10 20 3U 40 50 60 70 80 smrion (fret) Na__ 294 292 _c _ _ _, _AroM _..roba _G _ _S_h_e_r _ _Bd_e_, _ _H_e_th_e(k_e_e 288 286 s 284 MYNb13N7 282 6 a93 ]_rn2'6r r o roeX3 P 294 292 _ 290 288 286 284 MYNb13N7 282 pE tl N.. - MI - - - - - - - - - - - - vv \V -Y w I - - - - - - - - - - - - - - - - - - - - ---------- 4 Y�m I Table 1 la. Monitoring - Cross - Section Morphology Data Tables Project Number and Name: 289- Prestonwood Golf Course (Hatchet's Grove) Segment Reach: Iatchet's Grove (3,828 ft.) Parameter Cross - Section - Riffle 2 Cross - Section - Pool 2 Riffle Pool Cross - Section - Riffle 3 Riffle Dimension MYO MYl MY2 MY3 MY4 MY5 MY6 MYO MYl MY2 MY3 MY4 MY5 MY6 MYO MYl I MY2 MY3 MY4 MY5 MY6 Record Elevation (datum) used Record Elevation (datum) used 291.1 291.1 291.1 291.1 291.1 291.6 291.6 291.6 291.6 291.6 286.7 286.7 289.0 289.0 288.6 288.6 288.6 Bankfull Width (ft) 286.6 286.6 16.8 16.6 17.1 15.8 16.4 21.7 21.7 20.0 17.5 19.7 19.1 23.0 18.9 25.3 25.8 24.4 24.0 25.0 Floodprone Width (ft) 19.9 22.9 60 60 60 60 60 80 80 80 80 80 100 100 100 100 100 Bankfull Cross - Sectional Area (ft) 95 39.7 42.1 47.1 45.1 53.4 54.4 58.3 50.8 49.3 57.8 59.0 48.2 35.8 60.7 62.2 53.2 56.8 57.2 Bankfull Mean Depth (ft) 41.8 2.4 2.5 2.8 2.9 3.3 2.5 2.7 2.5 2.8 2.9 3.1 2.0 1.9 2.4 2.4 2.2 2.4 2.3 Bankfull Maximum Depth (ft) 2.4 2.3 3.2 3.2 3.3 3.5 3.9 4.5 4.6 4.3 4.3 4.5 4.5 4.8 4.4 4.4 4.4 3.8 4.1 4.1 Width/Depth Rai io 3 5 3.6 7.1 6.5 6.2 5.5 5.0 - 8.7 8.1 7.9 6.2 6.7 6.2 Width/Depth Ratio 10.5 10.7 11.2 10.1 10.9 Entrenchment Ratio 3.6 3.6 3.5 3.8 3.7 3.7 4.0 4.6 4.1 4.2 8.9 6.8 4.0 3.9 4.1 4.2 4.0 Bank Height Ratio 4.2 4.8 1.0 1.1 1.1 1.2 1.1 1 0 LO 1.0 1.0 1.1 4.5 4.8 4.1 1.0 1.0 1.0 1.0 LO Cross - Sectional Area Between End Pins (ft') I.0 1 0 I.I 1.0 101.9 1 0 1.0 1.1 LI L70, 1 0 1.0 1 0 1.0 1.0 Cross - Sectional Area Between End Pins (ft' 1 d50 (mm) - ro 0.6 0.9 2.8 12.0 1.2 06 0 5 1 5 _ 52.4 0.3 0.5 0.5 0.8 0.4 Parameter Cross - Section - Pool 3 Pool Cross - Section - Riffle 4 Riffle Cross - Section - Pool 4 Pool Dimension MYO MYl MY2 MY3 MY41 MY51 MY6 MYO MY] MY2 MY3 MY4 MY5 MY6 MYO MY] MY2 MY3 MY4 MY5 MY6 Record Elevation (datum) used 288.7 288.7 288.7 288.7 288.7 286.7 286.7 286.7 286.7 286.7 286.6 286.6 286.6 286.6 286.6 Bankfull Width (ft) 29.5 26.7 25.5 24.4 25.9 22.7 23.0 18.9 18.3 18.8 18.8 20.9 19.9 22.9 20.7 17.5 Floodprone Width (ft) 110 110 110 110 110 95 95 95 95 95 95 95 95 95 95 Bankfull Cross - Sectional Area (ft') 64.9 55.9 51.1 46.8 48.2 35.8 42.5 43.3 43.7 42.8 41.8 47.1 47.8 51.9 48.4 45.1 Bankfull Mean Depth (ft) ., 2.2 2.1 2.0 1.9 1.9 1.6 1.8 2.3 2.4 2.3 2.2 2.3 2.4 2.3 2.3 2.6 Bankfull Maximum Depth (ft) 4.8 4.4 4.5 4.7 4.4 3.6 3 5 3.6 3.8 3.6 3.7 4.5 5.3 5.5 5.1 5.0 Width/Depth Ratio 12.8 12.7 12.8 13.9 14.4 124 8.3 7.7 8.3 8.5 9.3 8.3 10.1 8.9 6.8 Entrenchment Ratio 4.1 4.3 4.5 4.2 4.8 4 1 5.0 5.2 5.1 5.1 4.5 4.8 4.1 4.6 5.4 Bank Height Ratio 1.0 1.0 I.0 1 0 I.I 1.0 1 0 1 0 1.0 1.1 LI 1 0 1.0 1 0 1.0 1.0 Cross - Sectional Area Between End Pins (ft' 1 ro 46.6 52.4 55.7 d50 (mm) 09 07 1 8 0 -4 07 05 06 0�9 L1 0� I0 0> 06 1,l Verification of Bankfull E*nts Project Number and Name: 289 — Preston%ood Golf Course (Hatchet's Grove) Date of Data Collection Date of Occurrence Method 10/1/2005 Unknown Bankfull Indicators 6/15/2006 6/14/2006 Site visit evaluating bankfull indicators after storm event 8/26/2008 4/28/2008 Crest Gauge 9/912008 9/7/2008 Crest Gauge 6116/2009 11/9/2009 Evaluation ofrainfall data 10/20/2010 9/30/2010 Crest Gauge 3120/2012 1 3/20/2012 Crest Gauge 6 additional bankfull events occurred in 2004 soon after construction according to the designer 4 of these were associated with tropical storm remnants Flooding of entire bench throughout project — 0.5 feet on floodplain with 1/5 inches of rain over a 48 -72 hour period — 03/12/2012 Heavy Flooding shortly after As -built in 2004 0 Plant List Scientific Namc I Common Name Trees Fraxin¢,; pervtFATnica Green ash Platamcs occidentalis American sycamore ericus pagoda Chc k oak Betula nigra River birch ercus phellos Willow oak Acer ne undo Box elder ercus nigra Water oak Liriodendron tuli i era Tulip tree Small Trees and Shrubs Cornus amomum Silky dogwood halanthus occidentalis Buttonbush Alnus sernrlata Tag alder Salix ni oq Black willow Sambucus canadensis Elderberry x River Birch &tula nigra x River Birch &Tula nigra x rrowood vibrinium dmtatnm x Elderberry Sambucus canodensis x Red Chokeberry Aronia arbuti olio x Buttonbush Cephalanthus occidentalis Blaek Willow salia nigra x Silky Dogwood cornus amomum x Common ninebark Phvsocarous omhFohos x ��� EEE EEE EEE EEE EEE EEE EEE EEttIEr � ^'•*' • , • � """1•�EEt1EEEEEEEEEEEEE ©EEEEEEE ��� EEE EEE EEE EEE EEE EEE EEE EEErL ��� EEE EEE'• EE E EEE EEt EEE EEE EEE (".�'�� ®EEE EEE EEE EEE EEE EEE EEE EEt L���� EEE EEE EEE EEE EEE EEE EEE EEE �� EEE EEE EEE EEE EEE EEE E ©E EEE • :'C".uf�EEEEEEEEEEEEEEtEEt�E ©EL E ©[ �li!**E�� E ©E EEE EE E EEE EEE EEE EEt EEt tT,��� EEE EEE EEE EEE EEE EEE EEE EEE �.t2��� EEE EEE EEE EEE EEE EEE EEE9 EEEi �C'�u4E•� EEE EEE EEE EEE EEE EEE EEE EEE �" + � '����EEEEEEEEEEEEEEEiEEEEEEiEEE �G�4l� EEE EEE EEE EEE EEE EEE EEE EEE �� ®EEE EEE EEE EE! 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EEt� EEEEE EEE " �l ��EEEEEEEEE*EEEEEE°EEEE ©EE ©i3! ��� ®EEE EEE EEE EEE EEE EEE EEt EEE L'>7t119'��� EEE EEl7 EEE EEE EEEEEE EEEEEE �(„9�EEE EEE EEEEEEEEEEEEEEEEEE� �I'�'""'�� EEE EEE EEE EEE EEE EEE EEEEEE'' • • E© EEEEEEE[�t�EEEt�E[ID[�EEQ.''EEE oaaoaaaa EEEEEEEEEEEEEEEEEEEEE►'E ©tom Plant List Scientific Namc I Common Name Trees Fraxin¢,; pervtFATnica Green ash Platamcs occidentalis American sycamore ericus pagoda Chc k oak Betula nigra River birch ercus phellos Willow oak Acer ne undo Box elder ercus nigra Water oak Liriodendron tuli i era Tulip tree Small Trees and Shrubs Cornus amomum Silky dogwood halanthus occidentalis Buttonbush Alnus sernrlata Tag alder Salix ni oq Black willow Sambucus canadensis Elderberry Supplemental Species List (2009 - 2010; 2010 -2011) Common Name Scientific Name 5-10 gallon Uvestake Northern Red oak Qpercus rubra x Scarlet Oak Quercus coccinea x White Oak Qpercus albs x Willow Oak Quercus phellos x _ Water Oak Quercusn�ra x Sycamore Planta[us occidentalis x Green Ash Frarinuspennsvlvanica_ x Carolina Ash Fraainus Carolinian x Ironwood Carpinus carohniana x River Birch &tula nigra x River Birch &Tula nigra x rrowood vibrinium dmtatnm x Elderberry Sambucus canodensis x Red Chokeberry Aronia arbuti olio x Buttonbush Cephalanthus occidentalis Blaek Willow salia nigra x Silky Dogwood cornus amomum x Common ninebark Phvsocarous omhFohos x rage i / or 16 EEP Recommendation and Conclusion Although the project mainstem has exhibited adjustments in the years immediately following construction the proportion of these areas considered to be of concern has decreased because they have demonstrated little change over the last few years or have improved with onset and development of vegetation. However, some areas appear to remain active at this time. The vegetation required a greater than average timeframe to attain some size due to the PII soil conditions and supplements were necessary to enhance the continued development the buffer. Many of the prior erosional areas still have bank angles and poor vegetative cover on the bank face, but the vegetation on the floodplain above them has gained size and a continued trend of stabilization is expected. Although the project pre -dated the 2003 guidelines, the playover and utility areas were adjusted as per table 1 in response to closeout precedents in similar settings. These adjustments combined with the reduction for the tributary reduces the credit yield by 17 %. EEP seeks regulatory closure with the adjustments noted in table 1 and figure 1. Contingencies The sewer maintenance corridor at the top of the project (western end of figure 1) was recently maintained along a path outside of the corridor delineated in the As -built for these utilities. This particular sewer leg had not been maintained previously to this extent and in this way. The current alignment has brought it closer to the mainstem than the As- builts indicate and EEP is investigating whether the corridor depicted on the As -built was in error or whether the utility maintenance path is incorrect. Page 13 of 18 Pre Construction - 2002 Post Construction — 2010 -2012 Page 14 of 18 Approximately 8 1-a of the project footage exhibits cut bank APPENDIX A - Watershed Planning Summary 289 — Prestonwood Golf Course Site The Prestonwood Golf Course Site project is located in HUC 03020201080010, the Upper Crabtree Creek watershed that was originally designated as a Targeted Local Watershed (TLW) in the 2002 Neuse RBRP (NCEEP, 2002) and continues this designation in the 2010 Neuse RBRP (NCEEP, 2010). At nearly 16 %, this watershed has one of the highest imperviousness percentages in the upper Neuse basin. The 2010 RBRP most highly recommends stormwater management projects and riparian buffer restoration to improve water quality conditions here. The Prestonwood Golf Course project restores a significant amount of riparian buffer and restores stream pattern to help reduce flow energy, thereby reducing stormwater impacts to the watershed. EEP has no additional viable projects in this TLW. According to the 2009 Neuse River Basinwide Water Quality Plan (NCDWQ, 2009), during the 2005 benthic macroinvertebrate community sampling 0.35 miles downstream of the Prestonwood project site on the mainstem of Crabtree Creek (at NC 54), "stream banks were moderately eroded and the stream was turbid ". Also, the benthic community indicated "continued water quality degradation" as the taxa richness and EPT richness declined 50% since the previous sampling in 2000. A review of the historical aerial imagery also revealed that most of the 3.8 square mile drainage upstream of the project site was developed in the period between 1998 and 2002, suggesting the major effects of impervious surfaces began occurring just before or during project construction and monitoring. This project restores buffer function for the length of the stream restoration and reduces nutrient and sediment inputs via increased infiltration. These functional improvements are beneficial to the benthic community and support the TLW goals. s Neuse 03020201 EEP Project Close -outs: Prestonwood Golf Course W,M�M Rnlonvood O if Loom Pro1M 91t. 19991 is _ -�E M . k S Legend . Rtli�M erd•n PrOfECtT�eS a... • EEP Tier I • 319 - _ -- 0 C"TF countws . Q &digit CUs N Q 14digd HUs Map, Hydro9'phy ^cam. Upper viR Creek L P ^d^ Munlclpaliues 9 EEP LVuP 1.5 3 8 Mibs -EEP TLW References: North Carolina Division of Water Quality, Neuse River Basinwide Water Quality Plan, 2009. Online at: Neuse Basinwide 2009. North Carolina Ecosystem Enhancement Program, Neuse River Basin Watershed Restoration Plan, November 2002. Online at: Neuse RBRP 2002. North Carolina Ecosystem Enhancement Program. Neuse River Basin Restoration Priorities, 2010. Online at: Neuse RBRP 2010. Page 15 of 18 APPENDIX B — Land Ownership and Protection SITE PROTECTION INSTRUMENT The land required for the construction, management, and stewardship of this mitigation project includes a portion of the following parcels. http: / /www.nceep.net/GIS DATA/PROPERTY /289 Presto nwood GC. pdf LONG -TERM MANAGEMENT PLAN Upon approval for close -out by the Interagency Review Team (IRT), the site will be transferred to the DENR Stewardship Program, which will be responsible for periodic inspection of the site to ensure that restrictions required in the conservation easement are upheld. Page 16 of 18 Site Protection Deed Book & Acreage Grantor County Instrument Page Number protected Prestonwood Country Wake Conservation 013218/00594 9.321 Deed Club, Inc. Easement http: / /www.nceep.net/GIS DATA/PROPERTY /289 Presto nwood GC. pdf LONG -TERM MANAGEMENT PLAN Upon approval for close -out by the Interagency Review Team (IRT), the site will be transferred to the DENR Stewardship Program, which will be responsible for periodic inspection of the site to ensure that restrictions required in the conservation easement are upheld. Page 16 of 18 U.S. ARMY CORPS OF ENGINEERS Wilmington District Action ID: 200320302 County: Wake GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION Property Owner N.C. Wetlands Restoration Program Attn: Jeff Jurek Address 1619 Mail Service Center Raleiah,_North Carolina 27699 Telephone Number 919- 733 -5208 Size and Location of Property (waterbody, Highway name /number, town, etc.): The site for the proposed stream restoration is located in the Prestonwood Country Club on Prestonwood Drive in Cary, Wake County, North Carolina Description of Activity: This permit authorizes the placement of in -stream structures associated with the restoration of 3700 linear feet of Hatchet's Grove, a tributary of Crabtree Creek in the Neuse River Basin. Applicable Law: X Section 404 (Clean Water Act, 33 USC 1344) only. Section 10 (River and Harbor Act of 1899) only. Authorization: Regional General Permit Number 27 Nationwide Permit Number Any violation of the conditions of the Regional General or Nationwide Permit referenced above may subject the permittee to a stop work order, a restoration order, and/or appropriate legal action. This Department of the Army Regional General Permit or Nationwide Permit verification does not relieve the permittee of the responsibility to obtain any other required Federal, State, or local approvals /permits. The permittee may need to contact appropriate State and local agencies before beginning work. If you have any questions regarding the Corps of Engineers regulatory program, please contact Andrea Wade at telephone number (919) 876 - 8441 extension 31. Regulatory Project Manager Signatu Date 24 January 2003 Expiration Date 24 January 2005 RECEIVED JAN 91 2003 NC WETLANDS RESTORATION O�O�- W A T 6�.� pG Michael F. Easley Governor 7 William G. Ross, Jr., Secretary Department of Environment and Natural Resources Alan Klimek, PE Division of Water Quality December 11, 2002 Mr. Ron Ferrell Wetlands Restoration Program 1619 MSC Raleigh, NC 27699 -1619 Subject: Stream Restoration /Enhancement Hatchet's Grove Stream Restoration Wake County, NC DWQ# 021883 Dear Mr. Ferrell: This Office is in receipt of the plans for the stream restoration projects of approximately 3700 feet of Hatchet's Grove Creek in the Neuse River Basin originally submitted to this Office on December 9, 2002. DWQ Staff reviewed the plans and determined that stream restoration and/or enhancement would be achieved. The stream impacts associated with the project may proceed without written approval from the Division. Please be advised that seven copies of a complete, formal application and a $475.00 fee is required for projects intended for compensatory mitigation credit (see General Certification No. 3353, issued March 18, 2002). Any request for mitigation credit shall be addressed under separate cover. If you have any questions regarding this matter, please contact Mr. Todd St. John at (919) 733 -9584. rL: )fl ands ey it Supervisor cc: Mr. Todd St. John, Wetland Jeff Jurek, WRP Raleigh Regional Office File RECEIVED DEC 17 2002 NC WEUNOS RESTORATION North Carolina Division of Water Quality, 401 Wetlands Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699 -1650 (Mailing Address) 2321 Crabtree Blvd., Raleigh, NO 27604 -2260 (Location) non moo .1— 1—L.. --I non 11. C-1 /;- "% Mai... ilL..l.. ......... .. .... .... ..........N....A.,l APPENDIX D — Debit Ledger Mitigation Project Name Prestoawood G.0 EEP IMS ID 289 River Basin NEUSE Cataloging Unit 03020201 Applied Credit Ratios: 1 20670:1 1.5:1 2.5:1 5:1 1:1 3:1 2:1 5:1 1:1 3:1 2:1 5:1 1:1 3:1 2:1 5:1 1:1 3:1 0.5:1 1 1 1 1 15 V ^ i Z irc z °t is i6 �o� €p o z Beginning Balance Ifeet and acres 4,123.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 19,895.00 0.00 0.00 0.00 0.00 0.00 NCDOT Pre -EEP Debits feet and acres); Not Applicable EEP Debits feet and acres): USACE Action DWO Permits IDs Impact Project Name 2002 -0215 2001 -20682 Leesville Road Widening 266.69 Buffalo Road Widening 2000 -1386 2002 -21364 Phasel 246,171 1 2002 -0577 2002 -20875 Dove Landing 259.45 NCDOT TIP 1 -0306C - Improvements to 1 -85 2002 -1677 2002 -20949 crossing Ellerbe Creek 1,933.14 2002 - 21036 / Ashworth Estates & 2003 -0373 2003 -21102 Camden Park 494.25 NCDOT TIP R -2907 - Widening of NC 55 at 2001 -0661 1997 -00175 Sunset Lake 477.86 200220862/ 200320805/ 2003 -0141 200320806 Tryon Road Widening 364.63 1996 -01917 / NCDOT TIP R- 2000EAIEB - 19% -0319 1997 -00684 Northern Wake Expressway 80 61 Riparian Buffer ILF Credit Purchase 19.895.00 Remaining Balance feet and acres 0.001 1 0.00 Page 18 of 18