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HomeMy WebLinkAbout19960634 Ver 1_Complete File_19960126State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Wayne McDevitt, Secretary A. Preston Howard, Jr., P.E., Director &14 NCDENR DIVISION OF WATER QUALITY January 26, 1999 Mr. Leonard Rindner, PWS 3714 Spokeshave Lane Matthews, NC 28105 Subject: Wetlands Mitigation Innes Street Market Rowan County, NC DWQ# 960634 Dear Mr. Rindner: This Office is in receipt of the Status Report dated January 15, 1999, for the mitigation wetlands at the subject facility. Staff from the Wetlands Unit reviewed the plans and found that the progress to date is acceptable. If you have any questions regarding this matter, please contact Mr. Todd St. John at (919) 733-1786 ext. 260. c e , J ?etlands R. Dorney Unit Supervi, or cc: Mr. Todd St. John, Wetlands Unit Mooresville Regional Office 4401 Reedy Creek Road, Raleigh, NC 27607 Telephone 919-733-1896 FAX 919-733-9959 An Equal Opportunity Affirmative Action Employer. 50% recycled/ 10% post-consumer paper . 4 LEONARD S. RINDNER. PWS Environmental Planning Consultant 3714 Spokeshave Lane Landscape Architecture Matthews, NC 28105 Land Planning (704) 846-0461 January 15, 1999 Mr. Steve Chapin US Army Corps of Engineers - Reg. Field Office 151 Patton Avenue - Room 143 Asheville, NC 28801 - 5006 Mr. John R. Dorney - Department of Water Quality - Environmental Science Laboratories 4401 Reedy Creek Road Raleigh, NC 27607 Re: Innes Street Market Wetland Mitigation Status Report Dear Sirs: On behalf of my client, the Crosland Group, I am providing you with the following information concerning the status of the wetland mitigation site for your review. General Visual Observations and Comments The created wetlands appear to be evolving into easily recognizable wetland habitat. 2. Great blue herons, terns, and plovers were noted feeding in the marsh areas. Amphibians, and aquatic insects were observed. 3. Fish were spotted in the lower wet pond of Cell 92 4. A (breeding) family of killdeer were noted in Cell #2. The wetlands seem to b? large enough to attract migrating birds and birds that rely on open wetland habitats. Protection may be offered by the surrounding slopes. 5. The water is remarkably clear when the leaving Cell#2 6. It appears that there is a strong probability of a successful mitigation project that has an excellent chance in meeting and/or exceeding the requirements. top ` AN 2 0a WArc?NDS aan,. Mr. Steve Chapin, Mr. John Domey Innes Street Market, Page 2 January 15, 1999, Meeting Goals Minimization - Installation of wet detention ponds completed - Construction of approximate 400'X 15' retaining wall to minimize impacts to high quality headwater forest wetlands completed. - Utilization of existing wetland soils in areas to be impacted in mitigation sites. - Strict adherence to an approved sedimentation control plan and other best management practices. Mitigation Creation of 4.00 acres of seasonally flooded and temporarily flooded headwater and extended stormwater wetlands. The proposed plans indicated that approximately 70% of the area will be vegetated wetlands and approximately 30% of the area will be strategically located open water areas. These open waters do not include the wet pond at the head of Cell #I or the wet pond also known as Cell #3. Current Conditions Wetland Mitigation Cell #1 Cell Al is approximately 1.75 acres and accepts water from a wet detention pond and from off-site overland drainage. To respond to actual site conditions and grading issues, the layout of Cell #1 was modified earlier this year to consist of two tiers. Recent adjustments to the mitigation site included grading adjustments and establishing more hydrological connections between the tiers. The hydrological connection between the tiers has been made by simple rip-rap and filter stone weirs. A recent adjustment was made to the hydrology to lower the level of standing water on the upper tier and to raise the level of water and increase the duration of saturation on the lower tier. This modification has allowed for the formation of higher zones or islands that will be the planting areas for scrub/shrub and bottomland hardwoods on the upper tier and affords hydrological conditions that are more conducive to wetland creation on the lower tier. A large island area will be planted with bottomland hardwoods and scrub/shrub vegetation in the lower tier as indicated. Mr. Steve Chapin, Mr. John Dorney Innes Street Market, Page 3 January 15, 1999 As depicted on the attached Data Form #1, it is apparent that the creation and natural formation of jurisdictional wetlands is succeeding in Cell 91. We believe that approximately ± 1.70 acres of jurisdictional wetlands will have been created in Cell #l. Approximately ± 0.05 acres is open water. Wetland Mitigation Cell #2 Cell 92 accepts ("polished") water from Cell 91, and storm drainage from the shopping center. A small open water feature is located at the discharge points into Cell 92. Recent adjustments to the mitigation site included grading and hydrological modifications. Adjustments to the rip-rap and stone weir are in the process of being made to increase the duration of flooding to establish more marsh-like/aquatic wetland habitat as required in the design of an extended detention wetlands. While wetland habitat is being successfully being created in Cell 42 (see Data Form 41) based on observations of natural succession, it appears that an emergent and scrub/shrub wetland habitat is developing. It is expected that this adjustment will increase the duration of flooding to allow the permanent pool to develop as a marsh with a depth of 0 - 18" with an almost equal distribution of area (35% and 35%) between 0"-9" and (9" to 18"). As depicted on the attached Data Form 91, it is apparent that the creation and natural formation of jurisdictional wetlands is succeeding in Cell #2. Approximately 1.30 acres of jurisdictional wetlands and 1.20 acres of related open water will have been created in Cell #2. Overall existing conditions appear to indicate that approximately 3 acres of created wetlands (70%) and adjacent 1.25 acres of open water (30%) will be created in this wetland complex. Vegetation The objective of the Mitigation Planting Plan is to enhance the created wetland and/or riparian habitats throughout the various areas used as mitigation on the project site. Planting will include a diversity of saturation tolerant tree species. The planting plan will also encourage a diverse canopy and mid-story vegetation. The primary criteria upon which plant selection is based is the duration of soil saturation. Forested mitigation sites will be planted at an initial density of approximately 500 trees woody stems per acre by utilizing a combination of bare root seedlings, live stakes, and/or larger vegetation. Scrub/shrub mitigation sites will be planted at an initial density of approximately 1000 woody stems per acre by utilizing a combination of bare root, live stakes, seedlings and/or larger vegetation. Herbaceous species are expected to naturally succeed. Mr. Steve Chapin, Mr. John Dorney Innes Street Market, Page 4 January 15, 1999, Dr. Jim Matthews (Habitat Assessment Restoration Program) and I believe based on a recent site visit that the herbaceous vegetation that is volunteering may be sufficiently diverse to eventually meet the requirements. The vegetation is probably partially the result of utilizing the hydric soil. The vegetation that is volunteering includes duck potato, soft rush, seedbox, spikerush, tear-thumb, and several varieties of sedges, bulrush, (unfortunately) cattails, and others. The cattails are being removed to the extent feasible. Schedule Vegetation will be selected from the following general lists. Planting of scrub/shrub and bottomland hardwood vegetation is expected to occur this winter. Live stakes such as silky willow; silky dogwood, and others are expected to be utilized where feasible due to availability. Scrub/Shrub Zone Alnus spp. Betula nigra Cephalanthus occidentalis Cornus amomum Ilex decidua Lindera benzoin Sambucus canadensis Viburnum dentatum Salix sp. as approved * Salix nigra is volunteering naturally Bottomland Hardwood - Forested Zone Diospyros virginiana Frax. pennsylvanica Nyssa sylvatica Quercus species Taxodium distichum Plat. occidentalis * Liquidambar styraciflua, Acer rubrum, Platanus occidentalis, are volunteering naturally Tree Planting Zones Planting zones are based on progressive toleration of saturated soil conditions. A/B - Transitional Species, and species which tolerate minimum duration of soil saturation C/D - Saturation - Tolerant tree species Forested Zone - Tree Planting Schedule * No more than 20% of the trees required to be installed shall be of one species to create diversity. Trees shall be located in a naturalistic pattern. The minimum size shall be 1 yr. bare root seedlings The size specified below is recommended to increase survivability. Additional or alternate selections may be necessary based on availability, site specific data, and cost factors. All of the listed species shall be utilized unless approved otherwise. Mr. Steve Chapin, Mr. John Dorney Inns Street Market, Page 5, January 15, 1999 Zone Scientific Name Size and Condition Spacing AB Diospyros virginiana min. 1 year bare root seedling 9' On Center Persimmon C/D Fraz. pennsylvanica min. 1 year bare root seedling 9' On Center Green Ash C/D Nyssa sylvatica min. 1 year bare root seedling 9' On Center Blackgum C/D Quercus lyrata min. 1 year bare root seedling 9' On Center Overcup Oak AB Quercus michauxii min. 1 year bare root seedling 9' On Center Swamp Chestnut Oak AB Quercus phellos min. 1 year bare root seedling 9' On Center Willow Oak AB Quercus shumardii min. 1 year bare root seedling 9' On Center Shumard's Oak CID Tazodium distichum min. 1 year bare root seedling 9' On Center Baldcypress S rub/Sh dule b Pl Z S h ti c ru an ng one c e Botanical Name Common Name Size Notes Ceph, occidentalis Button Bush 14" - 18" Plants 6'-7' O/C Alnus serrulata Tag Alder 14" - 18" Plants 6'-7' O/C Betula nigra River Birch 14" - 18" Plants 6'-7' O/C Lindera benzoin Spicebush 1411- 18" Plants 61-7' O/C Cornus amomum Silky Dogwood 14" - 18" Plants 6'-7' O/C Sambucus canadensis Elderberry 14" - 18" Plants 6-7' O/C Others that are approved ** No more than 20% of the scrub/shrub materials required to be installed shall be of one species to create diversity and shall be located in a pattern and directed by the planner . The minimum size shall be 1 vr. bare root seedlings. The size specified below is recommended to increase survivability. Additional or alternate selections may be necessary based on availability, site specific data, and cost factors. At least six varieties shall be utilized. Mr. Steve Chapin, Mr. John Dorney Innes Street Market, Page 6 January 15, 1999 Fertilization - Herbaceous and Wood Plant Species 1) Use Osmacote fertilizer or approved equal. For spring planting, use 18-6-12, eight to nine month release. For winter and fall planting, use 18-5-11, twelve to fourteen month release. 2) If planting is under water, use Agriform 20-10-5 two year release 10 gram planting tablets. 3) Fertilize at time of planting Recommended Quantities of Fertilizer for various Herbaceous Plant Materials IGarbisch Dormant propagule 15 grams Osmacote or 1 ea. 20-10-5 lOg Agriform tablet growing bareroot 15 grams Osmacote or 1 ea. 20-10-5 1Og Agriform tablet container/fiber pot 30 grams Osmacote or 3 ea. 20-10-5 1Og Agiiform tablet plug (seedling) 15 grams Osmacote or 1 ea. 20-10-5 lOg Agriform tablet plug (collection) 30 grams Osmacote or 3 ea. 20-10-5 1Og Agriform tablet Recommended Quantities of Fertilizer for various Woody Species (Garbisch 1 quart container 30 grams Osmacote or 20-10-5 lOg Agrifotm/Manufacturer rate 1 gallon container 90 grams Osmacote or 20-10-5 1Og Agriform/Manufacturer rate * 30 additional grams for each additional gallon plug (seedling) 15 grams Osmacote or 1 ea. 20-10-5 1Og Agriform tablet The side slopes surrounding the mitigation sites will be stabilized to prevent erosion. The following mixture could be used. Seeding Mixture Dates Types Rate Feb. 1 - Apr. 15 Sericea lespedeza Appalow (best 2/15 -3/21) (scarified) 501bs/acre Weeping Lovegrass 3 lbs /acre Kobe Annual lespedeza 10 lbs /acre Late winter is the best time to plant lespedezas. June 1 - Sept. 1 Temporary Crop Jap. Millet or Sorghum 35 lbs /acre (to be followed by permanent mixture) Aug. 25 - Oct. 25 Sericea lespedeza Appalow (low growing) (best 8/25 - 9/15) (unscarified) 701bs /acre or Sericea lespedeza (tall growing) (unscarified) Wheat 50 lbs /acre Kobe lespedeza 10 lb/acre Mr. Steve Chapin, Mr. John Dorney Inns Street Market, Page 7 January 15, 1999 Nurse Plants Between May 1, and August 15, add 10 lbs/acre German millet or 15 lb/acre Sudangrass. Prior to May 1 or August 15, add 40 lb/acre rye (grain). Vegetation Monitoring Two to four sample plots will be identified for Mitigation Cell #I and Mitigation Cell 92. Each sample plot will represent approximately a 50' by 50' area. A permanent sample plot location will then be identified for that cell. Establishment of an observation plot of at least 30' radius to record the number and species of each surviving woody stem and the percent aerial cover of the three most dominant species. Within the 30' radius area a 10' radius area will be established to record the three dominant herbaceous species. Mitigation areas will be monitored bi-annually during March/April and August/September to measure survival rate, species diversity, growth. Identify upland species and invasive species to be removed such as honeysuckle, blackberry, rose, poison ivy, kudzu, ligustrum, etc. At least 320 woody stems per acre in bottomland hardwood areas are surviving. If this criteria is not met, the area is not considered to be successful and maintenance will need to be performed on the area in order to provide the required quantiy. A five year monitoring period will be conducted for forested plant communities. A minimum 75% cover after five years is required for herbaceous plant cover. Hvdrologicnl Success Criteria Saturation or inundation for at least 12.5% of the growing season at lower landscape positions during average climatic conditions is the target hydrological characteristic. Upper landscape areas may exhibit inundation and/or saturation between 5% and 12.5% of the growing season. If wetland parameters are marginal, consultation with USACE personnel will be conducted to determine the jurisdictional extent in transitional areas. The data collected during the monitoring period will be utilized to evaluate the success of the mitigation areas. The success criteria will be as follows: Soil saturation within 12 inches of the surface for a minimum of approximately 12 consecutive days during the early part of the growing season. Mr. Steve Chapin, Mr. John Dorney Innes Street Market, Page 8 January 15, 1999 Observed evidence of inundation or saturation within the root zone for 5% to 12.5% of the growing season. Establish at least one hydrology indicator per the 1987 USACE Wetland Delineation Manual in the sample plot or match adjacent riparian habitat surroundings. Establishment of at least one hydric soil characteristic or match adjacent riparian habitat surroundings. These Vegetative, Soil, and Hydrological Characteristics must be met to determine success of the wetland mitigation. If the mitigation is determined to be unsuccessful the following one or more of the following contingency plans will be implemented. 1) Selected re-installation of vegetation, thinning, maintenance, and/or acceptance 2) Extended monitoring periods 3) Hydrological modifications or manipulation and/or 4) Off-site mitigation sites and/or. 5) Acceptable alternative form of mitigation. Report Submittal An "as-built" plan drawing of the area, including initial species compositions by the community type, and sample plot locations will be provided after completion of planting. A review of the actual design, densities, and quantities will also be included and will be provided within 90 days of completion of planting. Submitted reports will document the sample plot locations, along with photographs which illustrate site conditions. Monitoring Reports will include: 1) species and quantity of each surviving woody stem 2) Estimated percent aerial cover of the three dominant species 3) Representative photographs 4) Depth of water table during early part of the growing season 5) Hydric soil observations and other hydrological characteristics. Field data will be recorded on a monitoring data form and submitted along with representative photographs in a annual monitoring report. This will be submitted to the USACE and the NCDWQ. After the fifth year of monitoring, a summary report and as-builts will be furnished for review and discussion regarding compliance of the project with conditions of the permit and to determine the need for future monitoring or modifications. Mr. Steve Chapin, Mr. John Dorney Inns Street Market, Page 9 January 15, 1999 Conclusion Inns Street Market is a well planned and successful commercial development in Salsibury. The mitigation for the unavoidable impacts to jurisdictional waters of the U.S. appears to be progressing successfully with the development of wetland hydrology, hydric soil, and hydrophytic vegetation. This winter the establishment of scrub/shrub and bottomland hardwoods will begin now that the hydrology, soil, has been further established. The wetlands mitigation sites have been designed for both long term water quality protection and establishment of viable wetland habitat. As an anecdote, during a recent site visit to observe the progress of the mitigation site, I was asked by a truck driver behind the Food Lion what I was doing. I unconsciously, but fortunately answered using some professional jargon and expressed that I was evaluating the progress of the mitigation site. He seemed puzzled by the word, mitigation, and he said - "look's like a swamp to me!". Let me know if you have any questions, require further explanation, or would like to meet at the site. Sincerely, D6onard S. Rindner, PWS Environmental Planning Consultant NC Landscape Architect 9578 i 1 fi:. a... Nbw AWdb Ibrtnen cr.r R'bab m• / R+D.Ii+ Wnera 333 Wwbv- Rbb• $a1'r K C 28146-1530 11 (711 ) 033.0325 n ? Z 1 ? a t ? a 1 North; AC G 6M Ra.y, I NA08J Per Solar C>ets.aflar l1 i 1 I1 I 1 1 11 1 1 f DISCHARGE TO CELL#2 I PROPOSED BOTTOMLAND „ °ea I VICINITY MAP NO SCALE I ,ar 1 1 ay/?'..ws+4 SA[1SBU1rr runnanrr c-ly ROWAN COUNTY RarM C..&. r.. mw 070 Perc.l 94, 104, 117 PA, ft-b- 5669-55-1840 Scar. See Droving .4- by a,vaw.ra HARDWOODS i7.w Bo.e Poy. NO B R ?9 1997 N06£NBER ?9 1997 ow. 0£CEN6£R 04 1997 '1!0'""'b"' 97-459 EXISTING AQUATIC/EMERGENT WETLAND AREAS 7AA- 1N/s A/AP WAS Ivor DRARN 1o GS ?7-.3o snwoaaos AS PROCRI&D F04 ROMAMY PURP05£1 • PROPOSED SCRUB/SHRUB AREAS ,.. r •lw _a.c q., d, 64 Sfo,obys eI pd.. G Awy S SQ160J-cT - SIGNER MQtWAN oe£r RISOLN L- I 7tw1 •> .acn ? C? P c N } ?`?a? ?# ` a O Y•.n ^ W 44 Z7 wv b .nnx 6`• • 44.//3 wv c ,.a. 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I Z D >< o ? v n m m j cn z o a s? i ;t i I\ , G? ?1 N Z q ell D 1 ' 1 Z r I'` •? 1 1 mq?Qo? rr• v m 1 i I ? DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Site:bintos ? Date: 12 Applicant/Owner: County: Investigator: _L-t^ g j^0(,, State: Do Normal Circumstances exist on the site? es No Community ID: Is the site significantly disturbed (Atypical Situation)? "y-es <V TransectlD: Is the area a potential Problem Area? Yes (5) Plot ID: (if needed, explain on reverse.) _ C..,.P,- c. t_ _# 1- VFOc rATION Derninant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1.L4V4e)C _4 .0py- s &II y)fekfA. ? I?-?c 1 14 0.06t, A 10? / ?? 3•i?_y«..,je, rA' 11. 41 V\CAJr. 12- 5-- . ?6 V rr ,(.? ..lC 13. 6. 14. 7._ 15. S. 16. Percent of Dominant Species that are OBL FACW or FAC 6 . (excluding FAC-). e Remarks: HYDROLOGY _ Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: -Stream, Lake, or ride Gauge Primary Indd*i ators: -Aerial Photographs ?nundated _ Other -No Recorded Data Available _ ?9aturated in Upper 12 Inches Water Marks Drift Lines ?Sediment Deposits Said Observations: _.-tir-ainage Patterns in Wetlands Depth of Surface Water: Z fin.) Secondag-tiridicators (2 or more required): % Oxidized Root Channels in Upper 12 Inches to Depth to Free Water in Pin. d- z (in.) _ Water-Stained Leaves _ Local Soil Survey Data !i )I Depth to Saturated Soil: d r fin.) _ FAC-Neutral Test _ Other (Explain in Remarks) Remarks: s •--? 6x 101at.- A w ?- t?v f a,.?c 40rdwCZt r'd ,5'hvu? are, * Z - W71, 1995 -196 - S DATA FORM ROUTINE WETLAND DETERMINATION 0 987 COE Wetlands Delineation Manual) Ce! 14 Z Project/Site: vNr-e Applicant/Owner: rza 41 Investigator: Date: County: State: AU o Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? (If needed, explain on reverse.) ? No Yes <115) Yes 1D Community ID: Transect ID: Plot ID: C-,le,4 1 :9 7,- VEGETATION Dominant Plant Scecfes Stratum Indicator Str'at'um A-112- Z.. 0 YY? _tZ_ ./)?C 4 Dominant Plant Soec:es Stratum Indicator S. 44 10. • 12. 5.? ? 14CG ?_ ??i 13. 6. 14. 7. / A,wf j 0. 4016 -L--- 15. 8. V1GZ _ - 4 Percent of Dominant Species that are OBL, FACW or PAC (excluding PAC.). Remarks: HYDROLOGY Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: -Stream, Lake, or ride Gauge Primary Indicators: _ Aerial Photographs , -Kundated other _ 6mrated in Upper i 2 Inches -No Recorded Data Available Water Marks _ Drift Lines LS4dtment Deposits Field observations: Fainaga Patterns in Wedands Depth of Surface Water. Z (n.) Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 Inches 1 t _ Water-Stained Leaves Depth to Free Water in Fir. d (in.1 _ Local Soil Survey Data Depth to Saturated Sail: fin.) FAC-Neutral Test -Other (Explain in Remarks) Remarks: WTI, 1995 -196- SOILS - S CtrC. ?j {?h I Ilii' r C"- (( - ?-- 2- Map Unit Nam (Series and Phase): ?? I Yh t `4e- -ft We `(Aa ktL Drainage Class: Q? Taxonomy (Subgroup): Feld Observations Confirm Mapped Type? Yes No Profile Oescnwfon- Depth (Inches) Hart_' 'Z_o_n Matrix Color Matte Colors marde [Munsell Moist? (Munsell Moistl Abundance/Contrast ? ?_ to jLSZ IoY ? Yrr- y Hydric Soil Indicators: Texture, Concretions, Histasol Cone: etians Histc Epipedon _ H(qh Organic Content in Surface Layer in Sandy Soils SulSdie Odor _ Organic Streaking in Sandy Soils _ AGuic Moisture Regime _ Lasted on Local Hydric Soils List _ R acing Conditions _ Lasted on National Hydric Soils List .aeoGayed or Low-Chrema Colors _ Other (Explain in Remarks) Remarks: e k aw WETLAND DETERMINATION F phytic Vegetation Present? a No (Circle) (Circle) nd Hydrology Present? No Soils Present? es No Is Lois Sampling Point Within a Wetland? Yes No ks: ' -197. wM' 1995 r'• MITIGATION CELL #1 tea "?" [. *JL *raw, :r- tic?Y?..;.?.? a c;-?? ?wr t ..' . ,? / ? '? J f •? ( /fir F •N - MITIGATION CELL #1 1w, Y a f t MITIGATION CELL #2 Y? •^•r A A 4 K`? ? f s v ? ?1!?If MITIGATION CELL #2 7 ^. M'. ? '1y ??? t r j Y J1 PRESERVED WETLANDS BELOW CELL#2