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AESA20-0001bS:\Legal\Our Documents\Ordinances\20\AESA20-0001 Fisher 59 Ordinance With CRK Edits.Docx ORDINANCE NO . AESA20-000 1 b AN ORDINANCE OF THE CITY OF DENTON, TEXAS APPROVING A REQUEST TO AMEND AN ALTERNATIVE ENVIRONMENTALLY SENSITIVE AREA PLAN FOR APPROXIMATELY 49 .9-ACRES OF LAND GENERALLY LOCATED ON THE NORTH SIDE OF WEST UNIVERSITY DRIVE AND WEST OF NORTH MASCH BRANCH ROAD IN THE CITY OF DENTON, DENTON COUNTY, TEXAS; ADOPTING AN AMENDMENT TO THE CITY'S OFFICIAL ESA MAP ; PROVIDING FOR A PENALTY IN THE MAXIMUM AMOUNT OF $2,000 .00 FOR VIOLATIONS THEREOF; PROVIDING A SEVERABILITY CLAUSE AND AN EFFECTIVE DATE. (AESA20-0001) WHEREAS, Lenny Meers of Grimes Consulting, on behalf of Tom McElveney ofFisher 59 Properties LLC, have applied for an amendment to an Alternative ESA Plan on approximately 49.9-acres of land platted as Lots 1 and 2, Block A, Fisher 59 Addition, as depicted on the map attached as Exhibit "A," incorporated herein by reference (the "Property"); and WHEREAS, the purpose of the Alternative ESA Plan for the Property, attached as Exhibit "B," is to deviate from the Undeveloped Floodplain regulations; and WHEREAS, on February 19,2020, the Planning and Zoning Commission, in compliance with the laws of the State of Texas, gave requisite notices by publication and otherwise, afforded full and fair hearings to property owners and interested citizens, and recommended approval with conditions ( 6-0-1) of the amendment to the Alternative ESA Plan on the Property; and WHEREAS, on March 3, 2020, the City Council likewise conducted a public hearing as required by law, and finds that the request satisfies all substantive and procedural standards set forth in Section 35.3.4 of the Denton Development Code, and is consistent with the Denton Plan and the Denton Development Code; and WHEREAS, the Planning and Zoning Commission and the City Council of the City of Denton, in considering the application for an amendment to an Alternative ESA Plan for the Property, prepared by Terracon Consultants, Inc., dated February 12, 2020, attached and incorporated herein as Exhibit "B," have determined that the proposed use for the Property is in the best interest of the health, safety, morals, and general welfare of the City of Denton, and accordingly, the City Council of the City of Denton is of the opinion and finds that said Alternative ESA Plan is in the public interest and should be granted as set forth herein with respect to the Property; NOW THEREFORE, THE COUNCIL OF THE CITY OF DENTON HEREBY ORDAINS: SECTION 1. The findings and recitations contained in the preamble ofthis ordinance are incorporated herein by reference and found to be true . SECTION 2. The amended Alternative ESA Plan for the Property is hereby approved with the following conditions: 1. Land disturbance within the Floodplain ESA is limited to 5. 51 acres for grading activities pursuant to the Alternative Environmentally Sensitive Area Report prepared by Terracon Consultants, Inc ., dated July 2, 2019, and updated February 12, 2020 . 2. Seeding of native prairie habitat over an approximately 6 .0-acre area with the Native Seed Mix plants provided in Table 3 of the Alternative ESA Plan shall be completed prior to the final inspection for the proposed driveway by the Building Inspections Division. Plants established as a part of the proposed native prairie habitat are to be seeded and maintained by the current property owner/developer for a period of three (3) years following installation. Any plants that are removed, destroyed, or die within that three (3) year period are required to be replaced by the current property owner/developer to achieve a minimum 90% survival rate. 3 . Construction of two bio-retention systems over an approximately 0.28-acre area for water quality control would result in an offset in water quality volume by 3,180 cubic feet. Construction of the two bio-retention systems and installation of plantings shall be completed prior to the issuance of a Certificate of Occupancy for the distribution facility on the property. The bio-retention water-quality control systems shall be maintained by the property owner pursuant to the maintenance plan provided in the Alternative Environmentally Sensitive Area Report prepared by Terracon Consultants, Inc., dated July 2, 2019, and updated February 12, 2020. Any plants that are removed, destroyed, or are required to be replaced and must achieve a minimum 90% survival rate at the end of the three (3) year reporting period described in Condition 4 . 4. Following the installation and inspection of the native prairie habitat and bio-retention systems, the property owner shall submit an annual report to the Environmental Services Director during the first three (3) years describing the cumulative mitigation work performed and the survivability ofthe plantings for staff review and inspection. 5. The property owner shall dedicate an easement to the City of Denton that provides the City the right but not the obligation to maintain the bio-retention systems if the owner does not provide maintenance and repairs. This easement shall be provided to Development Services staff for review prior to the approval of an ordinance for the Alternative ESA Plan. SECTION 3. The City's official ESA map is hereby amended to show the change in the Amended Alternative ESA designation and classification for the Property. SECTION 4 . If any provision of this ordinance or the application thereof to any person or circumstance is held invalid by any court, such invalidity shall not affect the validity of the provisions or applications, and to this end the provisions of this ordinance are severable. SECTION 5. Any person, firm, partnership or corporation violating any provision of this ordinance shall, upon conviction, be deemed guilty of a misdemeanor and shall be punished by fine in a sum not exceeding $2,000.00 for each offense. Each day that a provision of this ordinance is violated shall constitute a separate and distinct offense. SECTION 6. That an offense committed before the effective date of this ordinance is governed by prior law and the provisions of the Denton Code of Ordinances, as amended, in effect when the offense was committed and the former law is continued in effect for this purpose . SECTION 7. In compliance with Section 2.09(c) ofthe Denton Charter, this ordinance shall become effective fourteen ( 14) days from the date of its passage, and the City Secretary is hereby directed to cause the caption of this ordinance to be published twice in the Denton Record- Chronicle, a daily newspaper published in the City ofDenton, Texas, within ten (10) days of the date of its passage. Page 2 of3 The motion to approve this ordinance was made by W lfrl ft Y If tV and seconded by Eze/Zflllb 1/ut>~(JC/ tl , the ordinance was passed and approved by the following vote [ 5'"-.LJ: Mayor Chris Watts: Gerard Hudspeth, District 1 : Keely G. Briggs, District 2 : Jesse Davis, District 3: John Ryan, District 4: Deb Armintor, At Large Place 5 : Aye v' v' ~ v Nay Abstain Paul Meltzer, At Large Place 6: v' PASSED AND APPROVED this, the .2di._ day of 'flLMa/L., 2020. C S ATTS , MAYOR ATTEST: ROSARIOS, CITY SECRETARY APPROVED AS TO LEGAL FORM: AARON LEAL, CITY ATTORNEY Page 3 of3 Absent Exhibit A 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l Alternative Environmentally Sensitive Area Report Fisher59 Distribution Center Northwest Corner of US Hwy 380 and Masch Branch Road Denton, Denton County, Texas Revised February 12, 2020 Grimes Consulting Project No. 3005 Prepared for: Fisher 59 Denton, Texas Originally Prepared by: Terracon Consultants, Inc. Dallas, Texas Project #94177808 Revised by: Grimes Consulting, Inc. St. Louis, MO 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 1 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l TABLE OF CONTENTS Page 1.0 EXECUTIVE SUMMARY ................................................................................................................. 1 2.0 INTRODUCTION .............................................................................................................................. 1 2.1 Project Location ................................................................................................................ 1 2.2 Project Description ........................................................................................................... 1 3.0 EXISTING SITE DESCRIPTION ...................................................................................................... 2 3.1 General Description .......................................................................................................... 2 3.2 Confirmed Environmentally Sensitive Areas ................................................................. 2 Floodplains .......................................................................................................................... 2 4.0 PROPOSED SITE IMPROVEMENTS DESCRIPTION .................................................................... 3 4.1 Proposed Site Description ............................................................................................... 3 4.2 Proposed Floodplain Improvements ............................................................................... 3 4.3 Proposed Enhancements .................................................................................................... 4 4.4 Monitoring and maintenance ............................................................................................... 8 4.5 Criteria for Approval ............................................................................................................ 8 List of Tables Table 1 – Floodplain Alterations ................................................................................................................ 4 Table 2 – Pre and Post-project WQv Amounts with and without Bioretention ..................................... 6 Table 3 – Native Seed Mix Species ............................................................................................................ 7 Table 4 – Proposed Bioretention Basin Vegetation List ......................................................................... 7 APPENDICES APPENDIX A – Exhibits Exhibit 1.0 Location Map Exhibit 2.0 Proposed Project Exhibit 3.0: Existing Aquatic Features Exhibit 4.0: Existing Floodplains and Stream Buffers Exhibit 5.0: Proposed Environmental Sensitive Area Alteration Exhibit 6.0: Proposed Site Enhancement Locations APPENDIX B – City Assessments, Data Point Sheets, And Site Photographs APPENDIX C – Site Layout APPENDIX D – Site Design Sheets and Calculations APPENDIX E – Stormwater Management Facility Operation and Maintenance Plan APPENDIX F – AESA Area Metes and Bounds Description 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 1 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l Alternative Environmentally Sensitive Area Report Fisher59 Distribution Center Northwest Corner of US Highway 380 and Masch Branch Road Denton, Denton County, Texas Grimes Consulting No. 3005 Rev. February 12, 2020 1.0 EXECUTIVE SUMMARY For the proposed construction of distribution center on an approximately 50-acre site, approximately 5.51 acres of Environmentally Sensitive Areas (ESAs) would be impacted. ESAs were identified on the site based on FEMA flood zone map data for undeveloped floodplains. During the construction of the proposed project, cut and fill activities immediately adjacent to the impacted floodplain would be conducted to mitigate for loss of valley storage. Additional mitigation activities to enhance water quality would include slope stabilization, and the establishment of bioretention basins at select stormwater outfalls. Habitat functions would be mitigated by the construction of the bioretention basins and enhancing native prairie areas for a total of 6.28 acres. 2.0 INTRODUCTION This report documents ESAs on the subject property and the proposed project impacts to ESAs on the property. This document proposes mitigation activities to address deviations from Subchapter 17 of the Denton Development Code (DDC) and to meet the criteria in Subchapter 35.17.11 of the DDC. 2.1 Project Location The proposed project is located on an approximately 50-acre tract of land, northwest of U.S. Highway 380 (US 380) and Masch Branch Road, in Denton, Denton County, Texas, hereafter referred to as the study area. The study area is depicted on Exhibit 1.0 in Appendix A. 2.2 Project Description The proposed project would involve the development of a distribution center on the subject property. The distribution center would include the construction of warehouse space, truck staging and loading areas, employee parking, and access roads to the facility from Masch Branch Road and US 380. The road access from Masch Branch Road would include the placement of fill material and the installation of box culverts in the floodplain and channel of an intermittent stream that traverses the eastern portion of the proposed project site. A figure depicting the proposed project is included as Exhibit 2.0 in Appendix A. Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 2 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l The proposed project would result in temporary and permanent impacts from fill activities in aquatic resources subject to the jurisdiction of the Clean Water Act (CWA). On September 13, 2018 the United States Army Corps of Engineers (USACE) verified that the proposed project would be covered by Nationwide Permit 39 for Commercial and Institutional Developments (USACE Project Number SWF-2010-00273), with no compensatory mitigation required. Concurrent with the Nationwide permit application and verification, an Approved Jurisdictional Determination (AJD) was requested from the USACE. The AJD concurred with Terracon’s opinion that while the streams within the study area would be subject to Section 404 jurisdiction, a wetland and open water feature identified on the site were isolated and/or incident to previous construction activities on the site and would not be subject to Section 404 jurisdiction. 3.0 EXISTING SITE DESCRIPTION 3.1 General Description The proposed project site is bounded by US 380 on the southern border and Masch Branch Road is located approximately 500 feet east of the site’s eastern boundary. The study area is mostly undeveloped. An oil/gas well pad is located near the northwest corner of the study area, and a gravel road grants access to the pad from Masch Branch Road. Elevations on the site range between 650 to 680 feet above mean sea level, sloping generally to the south. 3.2 Confirmed Environmentally Sensitive Areas Floodplains Terracon downloaded and reviewed Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) Panel Number 48121C0355G (Revised April 18, 2011) and Letter of Map Revision (LOMR) Determination Document Case Number 12-06-1709P (Effective July 9, 2013). According to the FEMA documents, the majority of the study area is located outside the limits of the FEMA mapped 100-year floodplain and 500-year floodplains and is in Zone X, unshaded. A large section of the eastern study area is located in the Zone A and Zone AE flood zones associated with an intermittent stream. The base flood elevation ranges from 659 feet above mean sea level in the northern reach and 657 feet in the southern reach. The floodplain as observed in the study area appears to be undeveloped. In 2012 the City of Denton obtained a drainage and maintenance easement for an area encompassing the 100-year floodplain. This floodplain has been designated an undeveloped floodplain and an Environmentally Sensitive Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 3 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l Area by the City of Denton. Exhibit 4.0 in Appendix A depicts the undeveloped floodplains in the study area. 4.0 PROPOSED SITE IMPROVEMENTS DESCRIPTION 4.1 Proposed Site Description The proposed project would involve cut, fill, and grading activities within the study area before constructing the distribution center facilities. In addition to a warehouse and office space, a paved truck staging and parking area would be constructed on the western portion of the property, a truck maintenance facility would be located northeast of the warehouse, and a paved parking area would be located immediately south of the warehouse facility. Electrical, water, and sanitary sewer utilities would be installed to service the facility. The total area of construction would be 34-acres. Access to the facility would be from access roads from Masch Branch Road and U.S. 380. The construction of the access road from Masch Branch Road would require cut and fill activities across the ESA floodplain. The intermittent stream channel would be routed through a series of box culverts where the access road would cross the stream channel. A Storm Water Pollution Prevention Plan has been developed to address temporary erosion and sediment control issues during the proposed project construction. Best Management Practices (BMP) that would be used to during construction include but are not limited to: • The placement of silt fencing and silt control logs to capture sediment before entering tributaries; • The installation of inlet protection measures on stormwater drain inlets; • The construction of storm drain outlet protection structures; • The use of erosion control matting on disturbed slopes to limit erosion and sediment issues; • After grading and construction is completed, areas with bare soil would be revegetated. The Site Plan included in Appendix C shows the proposed development, existing ESA floodplain, proposed alterations to site ESAs, and proposed mitigation activities to address impacts to ESAs. Design drawings showing the proposed landscaping plan and erosion/sediment control BMP locations are included in Appendix D. 4.2 Proposed Floodplain Improvements The construction of the Masch Branch Road access road to the facility would result in the alteration of the ESA floodplain. Cut and fill activities would also be conducted to compensate Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 4 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l for loss of valley storage incurred by construction in the existing floodplain. Within the study area, the existing 100-year floodplain occupies an area of approximately 16.6 acres. The proposed post-project 100-year floodplain would occupy an area of approximately 17.35 acres. Table 3 below shows the quantity of cut and fill and area of disturbance involved with the construction of the proposed project in the study area floodplains. There are no proposed disturbances to the western stream floodplain. Exhibit 5.0 in Appendix A shows the proposed floodplain alterations. Table 1 – Floodplain Alterations Activity Cut (Cubic Yards) Fill (Cubic Yards) Area of Disturbance (Acres) Earth Work in Existing Floodplain for Project Construction 11,870 7,775 5.51 4.3 Proposed Enhancements To mitigate the disturbance of habitat and water quality functions incurred by alterations to the ESA floodplain, several site and habitat enhancements are proposed. Enhancements include the construction of bioretention basins, and the establishment of native vegetation. Mitigation activities were constrained by the availability of suitable mitigation areas, and constraints on activities that can be done in an active floodplain. The mitigation activities proposed were chosen to provide water quality functions to downstream waters, to provide a diversity of habitat that is currently not present on the site, and to provide sustainable mitigation areas that would be low maintenance. The mitigation activities are detailed in the sections below and shown in Exhibit 6.0 in Appendix A, the site plan (Exhibit C.1) in Appendix C, and the site landscape plan in Appendix D. Mitigation goals are divided into water quality and habitat function uplift. Water quality uplift will be quantified using pre and post-project Water Quality Volume (WQv) to show post-project water quality uplift in the reduction of site WQv. Enhanced habitat acreage would be used to demonstrate habitat uplift. Post project habitat uplift would be based on the acreage of established native and diverse habitat areas. Proposed Water Quality Enhancements Water Quality Volume (WQv) is the storage needed to capture and treat the runoff from 85% of the average annual rainfall. Stormwater management goals often seek to lower WQv. A lower WQv indicates that more stormwater volume is retained on the site thereby reducing stormwater pollutant loads leaving the site and increasing downstream offsite water quality. WQv is a function of drainage area size, percent impervious cover, and a standardized typical rainfall volume. Drainage areas with more impervious cover have greater WQv than an area with less impervious cover. Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 5 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l To enhance stormwater quality and reduce WQV, two bioretention basins areas would be constructed. The first basin (BB-1) is located in the southern portion of the proposed project area immediately east of the service entrance off of U.S. 380. BB-1 is 0.06 acre in size, and accept stormwater drainage from the developed site, and drainage along the southern access road in the eastern drainage area (Exhibit H3 in Appendix D shows the bioretention basin location in the overall drainage areas of the site). The second basin (BB-2) would be approximately 0.22 acre located on the southern end of the development and accept drainage from the proposed parking area in the western drainage area. Both basins would be approximately 2.5 feet deep and consist of layers of gravel at bottom elevations followed by sand, sand/loam, and mulch layers at upper elevations. The bioretention areas would be planted with herbaceous vegetation species more adapted to wet conditions. The bioretention basin detail below shows the components of the basin. Calculations included in Appendix D show the WQv of these basins and other calculations used in determining their required size in relation to contributing drainage areas and desired treatment capacity. The Stormwater Management Facility Operation and Maintenance Plan included in Appendix E contains details of the basins and maintenance procedures for the basins. The proposed bioretention basins would provide a combined reduction in site WQv of 3,180 CF (Appendix D calculations). The ESA floodplain has a pre-project WQv of 5,303 CF based on a 16.6 acre area with 0.96% impervious cover from an existing access road to a gas well. The post-project floodplain area representing a 17.35 acres of ESA floodplain would have a WQv of 6,047 CF. The post-project WQv value takes into account 1.56% impervious cover that includes the newly constructed access road, and remaining lengths of the existing gas well access road. The post-project condition represents a WQv increase of 744 CF. The proposed bioretention basins would fully compensate for the post-project increased WQv in the DFIS-1 floodplain area. The graphic and Table 2 below summarizes the WQv amounts with and without the bioretention basins. WQv calculation sheets are included in Appendix D. Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 6 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l Table 2 – Pre and Post-project WQv Amounts with and without Bioretention WQv Conditions Without Bioretention WQv Conditions with Bioretention WQv Area WQv (CF) WQv Area WQv (CF) ESA Floodplain Pre- Project (16.6 acres) 5,303 CF ESA Floodplain Pre- Project (16.6 acres) 5,303 CF Post- Project Floodplain (Representative 17.35 acre area) 6,047 CF Post- Project Floodplain (Representative 17.35 acre area) 6,047 CF Post Project Increase Without Bioretention +744 CF Post Project Increase Without Bioretention +744 CF Bioretention WQv Reduction -3,180 CF Remaining Bioretention WQv Reduction on Site -2,867 CF 6,047 CF Post-driveway WQv – 3180 CF Bio-retention WQv = 2,867 CF Final WQv As shown in the table, the implementation of the proposed bioretention basins would more than mitigate for the post-project WQv increase resulting from the installation of the access road in the ESA floodplain. Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 7 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l Proposed Habitat Quality Enhancements During a March 13, 2018 site investigation, Terracon observed the ESA floodplain to be dominated by a mix of bermudagrass (Cynodon dactylon) herbaceous cover, with interspersed honey locust (Gleditsia triacanthos) and mesquite (Prosopis glandulosa) saplings and shrubs. Near the DFIS-1 channel larger canopy individuals of honey locust, mesquite, and hackberry (Celtis laevegata) were observed. In all, approximately 0.27 acre of this habitat would be used for the construction of the proposed access road from Masch Branch Road. An additional 5.24 acres of the undeveloped floodplain area would be disturbed by grading activities associated with maintaining valley storage of the new floodplain. In total, 5.51 acres of the undeveloped floodplain will be disturbed by the proposed construction activities. As mitigation for disturbance of the undeveloped floodplain, an area of the development would be planted with a native drain field that would result in the establishment of native prairie areas that could tolerate periodic inundation and moist soil conditions. The drain field mix would be seeded in a 6-acre area disturbed by grading inside and immediately adjacent to the improved floodplain on Fisher59 property. 3.57 acres of the 6-acre area that would be seeded is located within the pre-developed floodplain. 2.43 acres of the 6-acre area that would be seeded is located withing the new floodplain area. Below are the species that make up the native drain field mix. Table 3 – Native Seed Mix Species Scientific Name Common Name Rate; PLB/Acre Carex vulpinoldea Foxtail caric sedge 1.0 Chasmanthium latifolium River oats 2.0 Panicum virgatum Switchgrass 2.0 Carex davisii Davis’ caric sedge 1.0 Spartina pectinate Prairie cordgrass 1.0 Elymus riparius Riverbank wildrye 2.0 Additionally, the bioretention basins would provide some habitat functions by allowing diverse ground cover for small vertebrate and invertebrate species. The bioretention basins would occupy a total area of 0.28 acre. The bioretention basin planting list from the site landscape plan is included as Table 4 below. Table 4 – Proposed Bioretention Basin Vegetation List Upper Elevation Wet and Dry Condition Adapted Species Lower Elevation Wet Condition Adapted Species Scientific Name Common Name Scientific Name Common Name Elymus canadensis Canada wild rye Carex vulpinoldea Foxtail caric sedge Schizachyrinum scoparium Little blue stem Chasmanthium latifolium River oats Muhlenbergia reverchonii Seep muhly Panicum virgatum Switchgrass Echinacea purpurea Purple cone flower Muhlenbergia reverchonii Seep muhly Lupinus texensis Texas bluebonnet Rudbeckia hirta Black-eyed Susan Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 8 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l Upper Elevation Wet and Dry Condition Adapted Species Lower Elevation Wet Condition Adapted Species Scientific Name Common Name Scientific Name Common Name Rudbeckia hirta Black-eyed Susan Dalea purpurea Purple Prairie Clover Coreopsis tinctoria Plains Coreopsis Iris brevicaulis Purple Iris Coreopsis tinctoria Plains Coreopsis The total area that would be seeded with native herbaceous vegetation would be 6.28 acres (6 acres for areas in the improved floodplain and 0.28 acre in the bioretention areas). The total area of undeveloped floodplain ESA habitat that would be disturbed will be 5.51 acres. The proposed habitat mitigation offers a 6.28 to 5.51 difference of acreage enhanced with native vegetation areas to acreage of habitat disturbed within the undeveloped floodplain ESA, thereby resulting in a 0.77-acre increase in enhanced native diverse habitat on the site. Approximately 4.6 acres of the proposed native prairie seeding area in the floodplain would be located within the City of Denton drainage easement. All 6 acres, as described in the metes and bounds description in appendix F, of the proposed native prairie seeding area in the floodplain would be located within Fisher 59 property. The drainage easement would limit the alterations that could be done to the areas in these areas in the future by placing restriction on the improvement and disturbance allowed in the easement area without prior approval by the City of Denton. 4.4 Monitoring and maintenance To ensure the success and sustainability of the enhancement a monitoring and maintenance plan would be enacted. The vegetation planted on the site would be monitored for 3 years after the final planting activities. A yearly report documenting the status of the planting would be submitted to the City of Denton. At the end of the three years, a final report would be submitted to the City. Success of the native prairie seeded areas and bioretention basin areas would be based on 90% vegetative coverage within the limits of the bioretention areas. The Stormwater Management Facility Operation and Maintenance Plan included in Appendix E contains maintenance procedures for the bioretention basins and other stormwater management components on the site. 4.5 Criteria for Approval The following discusses how the proposed project meets the Denton Development Code’s (DDC) Criteria for Approval, as stated in DDC Section 35.17.11. 1. Mitigation goals are obtained by creating, expanding, and/or improving environmentally sensitive areas. Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 9 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l • The proposed project would increase the active ESA floodplain area from approximately 16.6 acres to 17.35 acres. The 5.51 acre of habitat that would be disturbed from the active ESA floodplain consists of vegetative cover of bermudagrass, honey locust, and mesquite. The proposed project would involve the establishment of approximately 6.28 acres of areas seeded with native prairie drain field herbaceous vegetation, and additional moist soil species in bioretention basins. Additionally, the overall water quality of the site would be enhanced over pre-project conditions by installing several bioretention areas. 2. Mitigation goals are obtained by preserving environmentally sensitive areas above the minimum requirements, exchanges between different types of ESAs, installing pollution prevention controls, and/or implementing best management practices or any other approaches that result in the improvement of the environment being impacted. • The proposed project would install pollution prevention controls and implement best management practices as discussed in Section 4.1 and shown in design drawings in Appendix D. Additionally, bioretention basin areas would be installed to contribute to water quality. The overall environment of the site would be improved by establishing areas of diverse vegetation to enhance the habitat quality of disturbed areas on the site. 3. Areas offered as mitigation are linked to existing or planned open space or conserved areas to provide an overall open space system. • The portion of the DFIS-1 floodplain that will be seeded with a native drain field mix for mitigation will be within the floodplain or adjacent to the floodplain. 4. Development is arranged for maximizing access and utilization of the environmentally sensitive areas by citizens. • The development consists of an active distribution center where public access would be restricted due to safety and security concerns. The development would be arranged for access and utilization by employees located at the development. 5. Areas offered as mitigation are placed either in a lot or lots that incorporate a permanent conservation easement, restrictive covenants, or such other legal mechanism to allow for the long-term conservation of said areas. Such legal mechanism shall limit any future land disturbing activity or construction within the environmentally sensitive areas and shall run with the land and be binding upon all successors and assigns of the current owner. Fisher59 Distribution Center ■ Masch Branch Road and US 380, Denton, TX Revised February 12, 2020 ■ Grimes Project No. 3005 10 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l • A portion of the Floodplain ESA seeded with a native drain field mix would be placed in an easement to limit future land disturbing activity. 6. The Alternative Environmentally Sensitive Area Plan shall demonstrate that the developer's alternative proposal results in a high-quality development meeting the intent of the standards in the Denton Development Code. • The proposed mitigation activities described in this plan provide enhancements to water quality and habitat diversity and function above the base requirements mandated by the City for the development. The proposed water quality enhancements would result in a reduction of WQv to levels below the pre-project conditions. The 6.28 acres of areas established in enhanced native drain field mix would provide diverse habitat to compensate for the disturbance of 5.51 acres of low diversity mostly non-native species habitat. These water quality and habitat improvements are presented as mitigation to impacts to the floodplain ESA and are above and beyond the requirements of a typical development. Mitigation activities located in easement areas will be protected against future disturbance further promoting long term environmental quality on the development. 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 1 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l APPENDIX A Exhibits PH. (214) 630-1010 terracon.com 8901 John W. Carpenter Freeway, Suite 100Dallas, Texas 75247 Ex hibit94177808 Jan 2019 NRM TVC Project No.: Date: Drawn By: Reviewed By: E:\GIS\2017\94177808\Maps\94177808_EX_1_0_Vicinity.mxd0 1,000 2,000500Feet³ Vicinity Map Fisher59 Distribution CenterDenton, Denton County, Texas33.23311 4°, -9 7.200684° (GCS NAD83)1.0 DATA SOURCES: MOD-gen Inc and/or AssignsESRI WMS - World Aerial Imagery, OpenStreetMap Legend Study Area PH. (214) 630-1010 terracon.com 8901 John W. Carpenter Freeway, Suite 100Dallas, Texas 75247 Ex hibit94177808 Mar 2019 NRM TVC Project No.: Date: Drawn By: Reviewed By: \\DALLAS1\Data\GIS\2017\94177808\Maps\94177808_EX_2_0_project.mxd0 300 600150Feet³ Proposed Project Fisher59 Distribution CenterDenton, De nto n C ounty, Texas33.23311 4°, -9 7.20068 4° (GC S NAD83 )2.0 DATA SOURCES: MOD-gen Inc and/or Assigns, USGSTopographic Map: Denton West Quadrangle, 1974ESRI WMS - World Aerial Imagery, OpenStreetMap Leg end Study Are aConstructio n LimitsExisting 1' C ontours Existin g 5' C onto ursProposed D eve lop men tProposed 1' ContoursProposed 5' Contours !(!( !( !( !( !(!( !. !. !.!. !. !. !. DP-4 DP-3 DP-5EW-1 DFES-1 DP-2 RPP-2 DP-6 RPP-4 OW-1 RPP-1 DP-1 DFIS-1 DFIS-1 RPP-5DP-7 RPP-7 RPP-6DFIS-1 DFIS-1 RPP-3 PH. (214) 630-1010 terracon.com 8901 John W. Carpenter Freeway, Suite 100Dallas, Texas 75247 Ex hibit94177808 Jan 2019 NRM TVC Project No.: Date: Drawn By: Reviewed By: E:\GIS\2017\94177808\Maps\94177808_EX_3_0_AqFe.mxd0 300 600150Feet³ Existing Aquatic Features Fisher59 Distribution CenterDenton, Denton County, Texas33.23311 4°, -9 7.200684° (GCS NAD83)3.0 DATA SOURCES: MOD-gen Inc and/or Assigns,ESRI WMS - World Aerial Imagery, OpenStreetMap Legend Study AreaDelineated Feature TypeWetlandStreamOpen WaterTransect Data P oint/Photo Point Community Type !.Eme rge nt W etland !.Gra ssland !.Gra ssla nd Drainage !.Wo od ed Patch X X AE AE X X A AE AE A AE AE AE A PH. (214) 630-1010 terracon.com 8901 John W. Carpenter Freeway, Suite 100Dallas, Texas 75247 Ex hibit94177808 Jan 2019 NRM TVC Project No.: Date: Drawn By: Reviewed By: E:\GIS\2017\94177808\Maps\94177808_EX_4_0_FEMA.mxd0 300 600150Feet³ FEMA Floodplain Map Fisher59 Distribution CenterDenton, Denton County, Texas33.23311 4°, -9 7.200684° (GCS NAD83)4.0 DATA SOURCES: MOD-gen Inc and/or Assigns, FEMANFHL 48ESRI WMS - World Aerial Imagery, OpenStreetMap Legend Study Area Flood Zone A AE; AH ; AO X PH. (214) 630-1010 terracon.com 8901 John W. Carpenter Freeway, Suite 100Dallas, Texas 75247 Ex hibit94177808 Jun 2019 NRM TVC Project No.: Date: Drawn By: Reviewed By: C:\Users\tvcapps\OneDrive - Terracon Consultants Inc\Desktop\MAESA\TerraData\94177808_EX_5_0_ESA_ALT.mxd0 300 600150Feet³ Environmental Sensitive Area Altera tion Fisher59 Distribution CenterDenton, De nto n C ounty, Texas33.23311 4°, -9 7.20068 4° (GC S NAD83 )5.0 DATA SOURCES: MOD-gen Inc and/or Assigns, FEMANFHL 48ESRI WMS - World Aerial Imagery, OpenStreetMap Legend Study Are a Constru ctio n L imits Existing 100-Year Floodplain Prop osed 100-Year Floodplain 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 12 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l APPENDIX B Data Point Sheets and Site Photographs Version 2, J. Dailey, January 2009 Owner: A & A Denton Properties LP Address or Location: NWC University Dr & N. Masch Branch Rd Stream Name: tributary of Dry Fork Cr. TrakIt #: ESA18-0008 Floodplain Information Is there an approved LOMR, CLOMR or LOMA for the site? Yes / No 48121C_44, effective 11/20/2013 Is there a pending LOMR, CLOMR or LOMA for the site? Yes / No Floodplain zone(s): 100-yr / 500-yr / both 100-yr & 500-yr Is floodway present? Yes / No If yes, is Riparian ESA assessment needed? Yes / No – previously completed, ESA09-0007 General Land Use Forest Commercial / Industrial Agricultural (fallow) Recreational Residential (low intensity / high intensity) Other: ________________ Soil Deposition and Erosion Does the floodplain slope to waterway or is natural levee present? Levee is present on east side, both sides slope to stream If natural levee is present, are wetlands located behind it? Yes / No If yes, is Water-Related Habitat assessment needed? Yes / No Soil Map Unit Names(s): Sanger clay, 1-3% slopes Sanger clay, 3-5% slopes Slidell clay, 1-3% slopes Active erosion: slight / moderate / severe Is evidence of sheet flow present? No______________ Is evidence of concentrated flow present? No Floodplain ESA Assessment Form Version 1 Vegetation Cover type: cement / bare / grass / shrub / forest young / forest old Plant cover on existing land: little –none / moderate / well vegetated Briefly describe dominant vegetation: early successional grass and forbs with honey locust and sugar berry trees. Along stream is quality habitat dominated by water willow, flatstem spikerush,rush, switchgrass and black willow. Invasive exotics present? Yes / No Invasive specie(s): Sorghum halepense (Johnson grass) Approximate area of infestation: 10% Trees Are tree(s) present > 6” DBH? Yes / No Are any trees to be removed? Yes / No Are any trees > 6” DBH to be removed? Yes / No Required Attachments: Site map Site photographs Comments: Area is previously pastureland which is now fallow. It is in a predominately natural state of grasses and trees such as sugarberry and honey locust. Area is undeveloped floodplain. See DDC 35.17.7.B for permitted uses and activities. Area to the east of floodplain has been filled with rubble and is dominated by invasive Johnsongrass. Area of fill is located outside of floodplain. Stream is located with proposed crossing which was determined by applicant’s consultant to likely be Waters of the U.S. Any proposed fill in stream would require approval from USACE. Conclusions Based upon the site inspection by the City of Denton, the area in question is NOT an ESA and therefore is not subjected to the ESA requirements outlined in the Denton Development Code. All other appropriate aspects of the Denton Development Code, however, still apply. The official city ESA map will be updated to remove the area from ESA status Based upon the site inspection by the City of Denton, the area in question IS an ESA and is subject to the requirment set forth in Section 17 of the Denton Development Code. Based upon the site inspection by the City of Denton, insufficient information is available to determine the ESA status of the area in question. A more extensive inspection is required from either the City of Denton or the property owner. The determination of the ESA status is permanently valid and may only be revisited if significant new information that necessitates a major change in the determination becomes available. A request for reconsideration of the determination may be submitted in writing by the applicant, landowner, or agent within 30 days of the date below. Signature of field investigator: Date: 5/30/2018_________________________ Approval: ______________ Date: __5/30/2018_________________________ Site map Site photographs Area of proposed stream crossing South end of proposed stream crossing North of proposed crossing Fill east of floodplain Fill near proposed road, east of floodplain Stream at existing driveway, looking at floodplain northwest of stream Stream and floodplain east of driveway crossing Stream and floodplain west of driveway Fill east of floodplain Honey locust canopy WETLAND DETERMINATION DATA FORM – Great Plains Region SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Is the Sampled Area within a Wetland? Yes No VEGETATION – Use scientific names of plants. Dominance Test worksheet: Prevalence Index worksheet: Hydrophytic Vegetation Indicators: Hydrophytic Vegetation Present? Yes No 94177808 Denton / Denton 3/13/18 MOD-gen, INC and/or Assigns TX DP-1 Cobb, Marshall NA basin concave 1-2 J 33.23142448358°N -97.1989588825°W NAD 83 Lindale clay loam, 1 to 3% slopes NA DAREM Score: 13 COMMUNITY: grassland drainage, disturbed 30' 0 15' 0 5' Amphiachyris amoena 5 N UPL Panicum virgatum 15 N FACU Cynodon dactylon 80 Y FACU 100 00 0 1 0% 0 0 0 0 15 45 80 320 5 25 100 390 3.9 30' SOIL Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: LRR I, J LRR F, G, H LRR G LRR F LRR H outside of MLRA 72 & 73 LRR F, G, H LRR G, H LRR F MLRA 72 & 73 of LRR H Restrictive Layer (if present): Hydric Soil Present? Yes No HYDROLOGY Wetland Hydrology Indicators: where tilled where not tilled LRR F Field Observations: Wetland Hydrology Present? Yes No DP-1 0"-6"10YR 4/4 95 clay 0"-6"7.5YR 5/8 5 clay Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 1 DP-1 Facing North Photo 2 DP-1 Facing East Photo 3 DP-1 Facing South Photo 4 DP-1 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 5 DP-1 Soil Profile WETLAND DETERMINATION DATA FORM – Great Plains Region SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Is the Sampled Area within a Wetland? Yes No VEGETATION – Use scientific names of plants. Dominance Test worksheet: Prevalence Index worksheet: Hydrophytic Vegetation Indicators: Hydrophytic Vegetation Present? Yes No 94177808 Denton / Denton 3/13/18 MOD-gen, INC and/or Assigns TX DP-2 Cobb, Marshall NA hillslope none 0-5 J 33.231607705889°N -97.2027345027°W NAD 83 Slidell clay 1 to 3% slopes R4SBC DAREM Score: 13 COMMUNITY: grassland; bermudagrass 30' 0 15' 0 5' Cynodon dactylon 30 Y FACU Croton texensis 20 Y UPL Nassella leucotricha 20 Y UPL Xanthium strumarium 20 Y FAC Solanum elaegnifolium 10 N UPL 100 00 0 4 0% 0 0 0 0 20 60 30 120 50 250 100 430 4.3 30' SOIL Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: LRR I, J LRR F, G, H LRR G LRR F LRR H outside of MLRA 72 & 73 LRR F, G, H LRR G, H LRR F MLRA 72 & 73 of LRR H Restrictive Layer (if present): Hydric Soil Present? Yes No HYDROLOGY Wetland Hydrology Indicators: where tilled where not tilled LRR F Field Observations: Wetland Hydrology Present? Yes No DP-2 0"-3"10YR 5/3 40 clay 0"-3"2.5YR 5/6 60 clay 3"-8"10YR 4/3 85 clay 3"-8"2.5YR 5/8 15 clay Rock 9" Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 9 DP-2 Facing North Photo 10 DP-2 Facing East Photo 11 DP-2 Facing South Photo 12 DP-2 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 13 DP-2 Soil Profile US Army Corps of Engineers Great Plains – Version 2.0 WETLAND DETERMINATION DATA FORM – Great Plains Region Project/Site: City/County: Sampling Date: Applicant/Owner: State: Sampling Point: Investigator(s): Section, Township, Range: Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%): Subregion (LRR): Lat: Long: Datum: Soil Map Unit Name: NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Hydric Soil Present? Yes No Wetland Hydrology Present? Yes No Is the Sampled Area within a Wetland? Yes No Remarks: VEGETATION – Use scientific names of plants. Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC−): (A) Total Number of Dominant Species Across All Strata: (B) Percent of Dominant Species That Are OBL, FACW, or FAC: (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species x 1 = FACW species x 2 = FAC species x 3 = FACU species x 4 = UPL species x 5 = Column Totals: (A) (B) Prevalence Index = B/A = Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation1 (Explain) 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Absolute Dominant Indicator Tree Stratum (Plot size: ) % Cover Species? Status 1. 2. 3. 4. = Total Cover Sapling/Shrub Stratum (Plot size: ) 1. 2. 3. 4. 5. = Total Cover Herb Stratum (Plot size: ) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. = Total Cover Woody Vine Stratum (Plot size: ) 1. 2. = Total Cover % Bare Ground in Herb Stratum Hydrophytic Vegetation Present? Yes No Remarks: 94177808 Denton / Denton 3/13/18 MOD-gen, INC and/or Assigns TX DP-3 Cobb, Marshall NA hillslope none 0-5 J 33.234493165513°N -97.2037594141°W NAD 83 Slidell clay 1 to 3% slopes R4SBC 4 4 4 4 4 4 DAREM Score: 13 COMMUNITY: mesquite patch 30' Prosopis glandulosa 60 Y FACU 60 15' Opuntia engelmannii var. lindeheimeri 10 Y UPL 10 5' Cynodon dactylon 80 Y FACU Amphiachyris amoena 20 Y UPL 100 0 0 0 4 0% 0 0 0 0 0 0 140 560 30 150 170 710 4.17 30' 4 US Army Corps of Engineers Great Plains – Version 2.0 SOIL Sampling Point: Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Gleyed Matrix (S4) 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) Sandy Redox (S5) Coast Prairie Redox (A16) (LRR F, G, H) Black Histic (A3) Stripped Matrix (S6) Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) High Plains Depressions (F16) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) (LRR H outside of MLRA 72 & 73) 1 cm Muck (A9) (LRR F, G, H) Depleted Matrix (F3) Reduced Vertic (F18) Depleted Below Dark Surface (A11) Redox Dark Surface (F6) Red Parent Material (TF2) Thick Dark Surface (A12) Depleted Dark Surface (F7) Very Shallow Dark Surface (TF12) Sandy Mucky Mineral (S1) Redox Depressions (F8) Other (Explain in Remarks) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) 3Indicators of hydrophytic vegetation and 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soil Present? Yes No Remarks: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (minimum of two required) Surface Water (A1) Salt Crust (B11) Surface Soil Cracks (B6) High Water Table (A2) Aquatic Invertebrates (B13) Sparsely Vegetated Concave Surface (B8) Saturation (A3) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Water Marks (B1) Dry-Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (B3) (where not tilled) Crayfish Burrows (C8) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Saturation Visible on Aerial Imagery (C9) Iron Deposits (B5) Thin Muck Surface (C7) Geomorphic Position (D2) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) FAC-Neutral Test (D5) Water-Stained Leaves (B9) Frost-Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): (includes capillary fringe) Wetland Hydrology Present? Yes No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: DP-3 0"-12"10YR 3/2 100 sandy silt 12"-20"10YR 5/2 100 sandy silt 4 4 4 4 4 Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 14 DP-3 Facing North Photo 15 DP-3 Facing East Photo 16 DP-3 Facing South Photo 17 DP-3 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 15 DP-3 Soil Profile US Army Corps of Engineers Great Plains – Version 2.0 WETLAND DETERMINATION DATA FORM – Great Plains Region Project/Site: City/County: Sampling Date: Applicant/Owner: State: Sampling Point: Investigator(s): Section, Township, Range: Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%): Subregion (LRR): Lat: Long: Datum: Soil Map Unit Name: NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Hydric Soil Present? Yes No Wetland Hydrology Present? Yes No Is the Sampled Area within a Wetland? Yes No Remarks: VEGETATION – Use scientific names of plants. Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC−): (A) Total Number of Dominant Species Across All Strata: (B) Percent of Dominant Species That Are OBL, FACW, or FAC: (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species x 1 = FACW species x 2 = FAC species x 3 = FACU species x 4 = UPL species x 5 = Column Totals: (A) (B) Prevalence Index = B/A = Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation1 (Explain) 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Absolute Dominant Indicator Tree Stratum (Plot size: ) % Cover Species? Status 1. 2. 3. 4. = Total Cover Sapling/Shrub Stratum (Plot size: ) 1. 2. 3. 4. 5. = Total Cover Herb Stratum (Plot size: ) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. = Total Cover Woody Vine Stratum (Plot size: ) 1. 2. = Total Cover % Bare Ground in Herb Stratum Hydrophytic Vegetation Present? Yes No Remarks: 94177808 Denton / Denton 3/13/18 MOD-gen, INC and/or Assigns TX DP-4 Cobb, Marshall NA hillslope concave 0-5 J 33.234600260427°N -97.2039030623°W NAD 83 Slidell clay 1 to 3% slopes R4SBC 4 4 4 4 4 4 DAREM Score: 13 COMMUNITY: drainage swale, fully vegetated 30' Prosopis glandulosa 20 Y FACU 20 15' Gleditsia triacanthos 10 Y FACU 10 5' Cynodon dactylon 60 Y FACU Rumex dentatus 5 N FACU Xanthium strumarium 15 N FAC Carex austrina 5 N FACU Symphyotrichum divarticatum 10 N OBL Helianthus tuberosus 5 N FACU Galium aparine 5 N FACU 105 0 0 0 3 0% 10 10 0 0 15 45 110 440 0 0 135 495 3.66 30' 4 US Army Corps of Engineers Great Plains – Version 2.0 SOIL Sampling Point: Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Gleyed Matrix (S4) 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) Sandy Redox (S5) Coast Prairie Redox (A16) (LRR F, G, H) Black Histic (A3) Stripped Matrix (S6) Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) High Plains Depressions (F16) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) (LRR H outside of MLRA 72 & 73) 1 cm Muck (A9) (LRR F, G, H) Depleted Matrix (F3) Reduced Vertic (F18) Depleted Below Dark Surface (A11) Redox Dark Surface (F6) Red Parent Material (TF2) Thick Dark Surface (A12) Depleted Dark Surface (F7) Very Shallow Dark Surface (TF12) Sandy Mucky Mineral (S1) Redox Depressions (F8) Other (Explain in Remarks) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) 3Indicators of hydrophytic vegetation and 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soil Present? Yes No Remarks: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (minimum of two required) Surface Water (A1) Salt Crust (B11) Surface Soil Cracks (B6) High Water Table (A2) Aquatic Invertebrates (B13) Sparsely Vegetated Concave Surface (B8) Saturation (A3) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Water Marks (B1) Dry-Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (B3) (where not tilled) Crayfish Burrows (C8) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Saturation Visible on Aerial Imagery (C9) Iron Deposits (B5) Thin Muck Surface (C7) Geomorphic Position (D2) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) FAC-Neutral Test (D5) Water-Stained Leaves (B9) Frost-Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): (includes capillary fringe) Wetland Hydrology Present? Yes No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: DP-4 0"-20"10YR 3/2 100 clay 4 4 4 4 4 4 4 Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 22 DP-4 Facing North Photo 23 DP-4 Facing East Photo 24 DP-4 Facing South Photo 25 DP-4 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 20 DP-4 Soil Profile WETLAND DETERMINATION DATA FORM – Great Plains Region SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Is the Sampled Area within a Wetland? Yes No VEGETATION – Use scientific names of plants. Dominance Test worksheet: Prevalence Index worksheet: Hydrophytic Vegetation Indicators: Hydrophytic Vegetation Present? Yes No 94177808 Denton / Denton 3/13/18 MOD-gen, INC and/or Assigns TX DP-5 Cobb, Marshall NA hillslope concave 0-5 J 33.234215320886°N -97.2033333687°W NAD 83 Slidell clay 1 to 3% slopes NA DAREM Score: 13 COMMUNITY: emergent wetland; spike rush 30' 0 15' Gleditsia triacanthos 10 Y FACU Prosopis glandulosa 10 Y FACU 20 5' Eleocharis lanceolata 35 Y FACW Schizachyrium scoparium 30 Y FACU Symphyotrichum divaricatum 35 Y OBL 100 00 2 6 33% 35 35 35 70 0 0 50 200 0 0 160 305 1.91 30' plant community dominated by Symphotrichum divarticatum is distinct, crawfish burrows, standing water, and algal mat present SOIL Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: LRR I, J LRR F, G, H LRR G LRR F LRR H outside of MLRA 72 & 73 LRR F, G, H LRR G, H LRR F MLRA 72 & 73 of LRR H Restrictive Layer (if present): Hydric Soil Present? Yes No HYDROLOGY Wetland Hydrology Indicators: where tilled where not tilled LRR F Field Observations: Wetland Hydrology Present? Yes No DP-5 0"-1"organic matter 1"-15"10YR 5/2 90 7.5YR 4/6 10 C PL clay 15"-20"10YR 3/1 80 10YR 5/8 20 C PL clay 1" 15" 15" Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 29 DP-5 Facing North Photo 30 DP-5 Facing East Photo 31 DP-5 Facing South Photo 32 DP-5 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 33 DP-5 Soil Profile US Army Corps of Engineers Great Plains – Version 2.0 WETLAND DETERMINATION DATA FORM – Great Plains Region Project/Site: City/County: Sampling Date: Applicant/Owner: State: Sampling Point: Investigator(s): Section, Township, Range: Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%): Subregion (LRR): Lat: Long: Datum: Soil Map Unit Name: NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are “Normal Circumstances” present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Hydric Soil Present? Yes No Wetland Hydrology Present? Yes No Is the Sampled Area within a Wetland? Yes No Remarks: VEGETATION – Use scientific names of plants. Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC (excluding FAC−): (A) Total Number of Dominant Species Across All Strata: (B) Percent of Dominant Species That Are OBL, FACW, or FAC: (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species x 1 = FACW species x 2 = FAC species x 3 = FACU species x 4 = UPL species x 5 = Column Totals: (A) (B) Prevalence Index = B/A = Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation1 (Explain) 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Absolute Dominant Indicator Tree Stratum (Plot size: ) % Cover Species? Status 1. 2. 3. 4. = Total Cover Sapling/Shrub Stratum (Plot size: ) 1. 2. 3. 4. 5. = Total Cover Herb Stratum (Plot size: ) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. = Total Cover Woody Vine Stratum (Plot size: ) 1. 2. = Total Cover % Bare Ground in Herb Stratum Hydrophytic Vegetation Present? Yes No Remarks: 94177808 Denton / Denton 3/13/18 MOD-gen, INC and/or Assigns TX DP-6 Cobb, Marshall NA hillslope none 0-5 J 33.233185398659°N -97.2009108218°W NAD 83 Sanger clay, 3 to 5% slopes NA 4 4 4 4 4 4 DAREM Score: 13 COMMUNITY: grassland 30' 0 15' 0 5' Eleocharis lanceolata 10 N FACW Cynodon dactylon 30 Y FACU Symphotrichum divaricatum 20 N OBL Rumex dentatus 10 N FACU Panicum virgatum 30 Y FAC Helianthus tuberosus 10 N FACU 110 0 0 1 3 33% 20 20 10 20 30 90 70 280 0 0 130 410 3.15 30' 4 US Army Corps of Engineers Great Plains – Version 2.0 SOIL Sampling Point: Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Gleyed Matrix (S4) 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) Sandy Redox (S5) Coast Prairie Redox (A16) (LRR F, G, H) Black Histic (A3) Stripped Matrix (S6) Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) High Plains Depressions (F16) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) (LRR H outside of MLRA 72 & 73) 1 cm Muck (A9) (LRR F, G, H) Depleted Matrix (F3) Reduced Vertic (F18) Depleted Below Dark Surface (A11) Redox Dark Surface (F6) Red Parent Material (TF2) Thick Dark Surface (A12) Depleted Dark Surface (F7) Very Shallow Dark Surface (TF12) Sandy Mucky Mineral (S1) Redox Depressions (F8) Other (Explain in Remarks) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) 3Indicators of hydrophytic vegetation and 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soil Present? Yes No Remarks: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (minimum of two required) Surface Water (A1) Salt Crust (B11) Surface Soil Cracks (B6) High Water Table (A2) Aquatic Invertebrates (B13) Sparsely Vegetated Concave Surface (B8) Saturation (A3) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Water Marks (B1) Dry-Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Drift Deposits (B3) (where not tilled) Crayfish Burrows (C8) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Saturation Visible on Aerial Imagery (C9) Iron Deposits (B5) Thin Muck Surface (C7) Geomorphic Position (D2) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) FAC-Neutral Test (D5) Water-Stained Leaves (B9) Frost-Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): (includes capillary fringe) Wetland Hydrology Present? Yes No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: DP-6 0"-8"10YR 3/2 85 7.5YR 5/8 15 C PL clay 8"-20"10YR 3/1 70 10YR 5/4 30 C M clay 4 4 4 4 4 Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 34 DP-6 Facing North Photo 35 DP-6 Facing East Photo 36 DP-6 Facing South Photo 37 DP-6 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 38 DP-6 Soil Profile WETLAND DETERMINATION DATA FORM – Great Plains Region SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Is the Sampled Area within a Wetland? Yes No VEGETATION – Use scientific names of plants. Dominance Test worksheet: Prevalence Index worksheet: Hydrophytic Vegetation Indicators: Hydrophytic Vegetation Present? Yes No 94177808 Denton / Denton 3/13/18 MOD-gen, INC and/or Assigns TX DP-7 Cobb, Marshall NA hillslope concave 0-5 J 33.233773775923°N -97.199359986°W NAD 83 Sanger clay 1 to 3% slopes NA DAREM Score: 13 COMMUNITY: Grassland drainage, Rumex dentatus 30' Prosopis glandulosa 30 Y FACU 30 15' Gleditsia triacanthos 10 Y FACU Prosopis glandulosa 20 Y FACU 30 5' Cynodon dactylon 40 Y FACU Rumex altissimus 20 Y FAC Symphotrichum divaricatum 20 Y OBL Eragrotis pectinacea 10 N FAC 90 010 1 6 17% 20 20 0 0 30 90 100 400 0 0 150 510 3.4 30' SOIL Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: LRR I, J LRR F, G, H LRR G LRR F LRR H outside of MLRA 72 & 73 LRR F, G, H LRR G, H LRR F MLRA 72 & 73 of LRR H Restrictive Layer (if present): Hydric Soil Present? Yes No HYDROLOGY Wetland Hydrology Indicators: where tilled where not tilled LRR F Field Observations: Wetland Hydrology Present? Yes No DP-7 0"-20"10YR 2/2 100 clay 1" 6" Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 39 DP-7 Facing North Photo 40 DP-7 Facing East Photo 41 DP-7 Facing South Photo 42 DP-7 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 35 DP-7 Soil Profile Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 1 RPP-1 Facing North Photo 2 RPP-1 Facing East Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 3 RPP-1 Facing South Photo 4 RPP-1 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 5 RPP-2 Facing North Photo 6 RPP-2 Facing East Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 7 RPP-2 Facing South Photo 8 RPP-2 Facing West Photo 9 RPP-8 (ditch) Facing southwest. Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 9 RPP-3 Facing North Photo 10 RPP-3 Facing East Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 11 RPP-3 Facing South Photo 12 RPP-11 (Grassland) Facing north. Photo 12 RPP-3 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 13 RPP-4 Facing North Photo 14 RPP-4 Facing East Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 15 RPP-4 Facing South Photo 16 RPP-4 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 17 RPP-5 Facing North Photo 18 RPP-5 Facing East Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 15 RPP-5 Facing South Photo 16 RPP-5 Facing West Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 17 RPP-6 Facing North Photo 18 RPP-6 Facing East Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 19 RPP-6 Facing South Photo 20 RPP-6 Facing West Photo 21 RPP-20 facing south Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 21 RPP-7 Facing North Photo 22 RPP-7 Facing East Photo 23 RPP-22. WEST Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 23 RPP-7 Facing South Photo 24 RPP-7 Facing West Photo 25 RPP-24 Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 1 DFES-1 Facing upstream, southern portion of study area Photo 2 DFES-1 Facing downstream, southern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 3 DFES-1 Facing downstream, southern portion of study area Photo 4 DFES-1 Facing upstream, southwestern portion of study area Photo 5 Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 5 DFES-1 Facing downstream, southwestern portion of study area Photo 6 DFES-1 Facing downstream, southwestern portion of study area Photo 7 Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 7 DFES-1 at the bend Photo 8 DFES-1 Facing downstream, southwestern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 9 DFES-1 Facing downstream, western portion of study area Photo 10 DFES-1 Facing downstream, western portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 11 DFES-1 western portion of the study area Photo 12 DFES-1 western portion of the study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 13 Emergent Wetland-1 Photo 14 Open Water-1 Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 15 DFIS-1 Facing upstream, northeastern portion of the study area Photo 16 DFIS-1 Facing downstream, northeastern portion of the study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 17 DFIS-1 Facing downstream, northeastern portion of the study area Photo 18 DFIS-1 Facing downstream, northeastern portion of the study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 19 DFIS-1 eastern portion of the study area Photo 20 DFIS-1 Facing upstream, eastern portion of the study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 21 DFIS-1 Facing downstream, northeastern portion of the study area Photo 22 DFIS-1 Facing downstream, northeastern portion of the study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 23 DFIS-1 Facing upstream, northeastern portion of the study area Photo 24 DFIS-1 Facing downstream, northeastern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 25 DFIS-1 Facing upstream, northeastern portion of study area Photo 26 DFIS-1, eastern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 27 DFIS-1, eastern portion of study area Photo 28 DFIS-1 facing downstream, eastern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 29 DFIS-1 facing upstream, southeastern portion of study area Photo 30 DFIS-1 facing downstream, southeastern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 31 DFIS-1 facing upstream, eastern portion of study area Photo 32 DFIS-1 facing downstream, southeastern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 33 DFIS-1 facing downstream, southeastern portion of study area Photo 34 DFIS-1 facing downstream, southeastern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 35 DFIS-1 facing upstream, southeastern portion of study area Photo 36 DFIS-1 facing downstream, southeastern portion of study area Project No. 94177808 Date Photos Taken: March 13, 2018 Masch Branch Road ■ Denton, Denton County, Texas Photo 37 DFIS-1 facing downstream, southeastern portion of study area 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 13 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l APPENDIX C Site Layout 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 14 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l APPENDIX D Site Design Sheets and Calculations GRIMES CONSULTING, INC.CALCULATION SHEET Project Name:Fisher 59 Project Number:3005 Computed By:JRB Date:10-Apr-19 Checked By:JLW Rev Date:29-Apr-19 PRE-PROJECT ESA FLOODPLAIN WATER QUALITY VOLUME Site Area =16.60 % Impervious 0.96 Impervious Area =0.16 CN=98 Rv(Calc) = 0.009(I)+0.05 0.059 Pervious Area =16.44 CN=80 P =1.5 Gravel Area =0.00 CN=91 (80% Imp) Wqv= 0.122 Ac-ft Wqv=5,303 CF POST-PROJECT ESA FLOODPLAIN WATER QUALITY VOLUME Site Area =17.35 % Impervious 1.56 Impervious Area =0.27 CN=98 Rv(Calc) = 0.009(I)+0.05 0.064 Pervious Area =17.08 CN=80 P =1.5 Gravel Area =0.00 CN=91 (80% Imp) Wqv= 0.139 Ac-ft Wqv=6,047 CF UPSTREAM AREATREATED BY BIORETENTION WATER QUALITY VOLUME Site Area =1.60 % Impervious 35 Impervious Area =0.56 CN=98 Rv(Calc) = 0.009(I)+0.05 0.365 Pervious Area =1.04 CN=80 P =1.5 Gravel Area =0.00 CN=91 (80% Imp) Wqv= 0.073 Ac-ft Wqv=3,180 CF WQv Pre-Project 0.122 Ac-Ft =5,303 CF WQv before reduction 0.139 Ac-Ft =6,047 CF WQv with reduction 0.066 Ac-Ft =2,867 CF Table 5 – Pre and Post-project WQv Amounts with and without Bioretention WQv Conditions Without Bioretention WQv Conditions With Bioretention WQv Area WQv (CF)WQv Area WQv (CF) DFIS-1 Floodplain ESA Pre- Project 5,303 DFIS-1 Floodplain ESA Pre- Project 5,303 DFIS-1 Floodplain ESA Post- Project without Bioretention 6,047 DFIS-1 Floodplain ESA Post- Project with Bioretention 2,867 Pre Post-project Difference 744 CF Increase Pre Post-project Difference -2,436 CF Decrease 6,047 cf post-driveway WQv – 3,180 cf bio-retention WQv = 2,867 cf final WQv GRIMES CONSULTING, INC.CALCULATION SHEET Project Name:Fisher 59 Project Number:3005 Computed By:JRB Date:2-May-18 Checked By:JLW Rev Date: BIORETENTION BB-1 WATER QUALITY VOLUME (F-6 BIO-RETENTION) Site Area =0.86 % Impervious 19 Impervious Area =0.16 CN=98 Rv(Calc) = 0.009(I)+0.05 0.217 Rv(Design) =0.217 Pervious Area =0.70 CN=80 P =1.5 Gravel Area =0.00 CN=91 (80% Imp) df =2.50 ft Filter bed depth (NOT INCLUDING SAND LAYER)Af= Filter Bed Area k =0.5 ft/day Coefficient of Permeability (Per iSWM Section 2.6)Wqv= (P*Rv*A)/12 Af = (WQv)*(df) / [(k)*(hf + df)*(tf)] hf = 0.36 ft Average Height of Water Wqv= 0.023 Ac-ft Af 'A' =891 tf =2.00 days Filter Bed Drain Time Wqv=1,018 CF Af Provided =950 CALCULATED BASIN VOLUME ELEVATION AREA SQ. FOOT VOLUME CUBIC-FOOT TOTAL VOLUME SUM CUBIC- FOOT Top of Basin =662.00 2465 2177.50 3598 661.00 1890 1420.00 1420 Top of Mulch =660.00 950 0.00 0 Top of Soil =659.75 950 0.00 0 Bottom of Soil =657.25 950 0.00 0 Maximum Allow. Pond Depth =18 inches = Elev.661.50 Filter Bed Depth =2.50 feet Calculated Water Depth(WQv)=8.60 inches Required WQv (Calculated) =1018 cf WQv Provided =1018 at Elev 660.72 Area of Filter Bed =950 sq. ft.Structure Top =660.75 Berm Elevation =662.00 GRIMES CONSULTING, INC.CALCULATION SHEET Project Name:Fisher 59 Project Number:3005 Computed By:JRB Date:2-May-18 Checked By:JLW Rev Date: BIORETENTION BB-2 WATER QUALITY VOLUME (F-6 BIO-RETENTION) Site Area =0.74 % Impervious 54 Impervious Area =0.40 CN=98 Rv(Calc) = 0.009(I)+0.05 0.536 Rv(Design) =0.536 Pervious Area =0.34 CN=80 P =1.5 Gravel Area =0.00 CN=91 (80% Imp) df =2.50 ft Filter bed depth (NOT INCLUDING SAND LAYER)Af= Filter Bed Area k =0.5 ft/day Coefficient of Permeability (Per iSWM Section 2.6)Wqv= (P*Rv*A)/12 Af = (WQv)*(df) / [(k)*(hf + df)*(tf)] hf = 0.40 ft Average Height of Water Wqv= 0.050 Ac-ft Af 'A' =1862 tf =2.00 days Filter Bed Drain Time Wqv=2,162 CF Af Provided =1925 CALCULATED BASIN VOLUME ELEVATION AREA SQ. FOOT VOLUME CUBIC-FOOT TOTAL VOLUME SUM CUBIC- FOOT Top of Basin =668.00 5350 4400.00 7088 667.00 3450 2687.50 2688 Top of Mulch =666.00 1925 0.00 0 Top of Soil =665.75 1925 0.00 0 (20% Volume) Bottom of Soil =663.25 1925 0.00 0 Maximum Allow. Pond Depth =18 inches = Elev.667.50 Filter Bed Depth =2.50 feet Calculated Water Depth(WQv)=9.65 inches Required WQv (Calculated) =2162 cf WQv Provided =2162 at Elev 666.80 Area of Filter Bed =1925 sq. ft.Structure Top =666.80 Berm Elevation =668.00 ZONE "AE" NON-SHADED ZONE X 1 3 2 7 18B J O 6 G H I K L 4 9B 5A 5 18C 18D 18E 20A 20B CO2 23 25 24 J:\3005\3005\Drawings\Engineering\Construction Plans\3005 SDP.dwg\6/28/2019 7:27 AM\James Whisler16150 Main Circle Drive, Suite 100 St. Louis, MO 63017 (636) 449-1175 / fax (636) 449-1176FISCHER 59CITY PROJECT: SP18-0013PART OF A TRACT OF LANDIN THE SEFERINO A. HUIZARSURVEY, ABSTRACT # 51449.99 ACRESPREPARER'S SEAL 5050 W. UNIVERSITY DRIVECITY OF DENTON,DENTON COUNTY TXSEFERINO A. HUIZARSURVEY, ABSTRACT # 51404.16.186/28/19 EXHIBIT J2 - UTILITY PLAN J:\3005\3005\Drawings\Engineering\Construction Plans\3005 SDP.dwg\6/28/2019 7:28 AM\James Whisler16150 Main Circle Drive, Suite 100 St. Louis, MO 63017 (636) 449-1175 / fax (636) 449-1176FISCHER 59CITY PROJECT: SP18-0013PART OF A TRACT OF LANDIN THE SEFERINO A. HUIZARSURVEY, ABSTRACT # 51449.99 ACRESPREPARER'S SEAL 5050 W. UNIVERSITY DRIVECITY OF DENTON,DENTON COUNTY TXSEFERINO A. HUIZARSURVEY, ABSTRACT # 51404.16.186/28/19 EXHIBIT K6 - BMP DETAILS THE RAIN GARDEN IS DESIGNED TO HOLD STORM WATER RUNOFF SO IT CAN FILTER POLLUTANTS. THERE ARE SPECIAL PLANTS IN THE BEDS WHICH ACTUALLY ASSIST IN THE PROCESS OF ABSORBING THE POLLUTANTS. THE PLANTS ARE ALSO USED TO FEED AND ATTRACT BIRDS AND BUTTERFLIES. BIO-RETENTION 29 CO4 27 J:\3005\3005\Drawings\Engineering\Construction Plans\3005 site.dwg\6/28/2019 7:32 AM\James Whisler16150 Main Circle Drive, Suite 100 St. Louis, MO 63017 (636) 449-1175 / fax (636) 449-1176FISCHER 59CITY PROJECT: TBDPART OF A TRACT OF LANDIN THE SEFERINO A. HUIZARSURVEY, ABSTRACT # 51449.99 ACRESPREPARER'S SEAL 5050 W. UNIVERSITY DRIVECITY OF DENTON,DENTON COUNTY TXSEFERINO A. HUIZARSURVEY, ABSTRACT # 51404.16.186/28/19 EXHIBIT K3 - BMP DETAIL THE RAIN GARDEN IS DESIGNED TO HOLD STORM WATER RUNOFF SO IT CAN FILTER POLLUTANTS. THERE ARE SPECIAL PLANTS IN THE BEDS WHICH ACTUALLY ASSIST IN THE PROCESS OF ABSORBING THE POLLUTANTS. THE PLANTS ARE ALSO USED TO FEED AND ATTRACT BIRDS AND BUTTERFLIES. BIO-RETENTION ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" NON-SHADED ZONE X NON-SHADED ZONE X NON-SHADED ZONE X NON-SHADED ZONE X NON-SHADED ZONE X J:\3005\3005\Drawings\Engineering\Construction Plans\3005 site.dwg\6/28/2019 7:35 AM\James Whisler16150 Main Circle Drive, Suite 100 St. Louis, MO 63017 (636) 449-1175 / fax (636) 449-1176FISCHER 59CITY PROJECT: TBDPART OF A TRACT OF LANDIN THE SEFERINO A. HUIZARSURVEY, ABSTRACT # 51449.99 ACRESPREPARER'S SEAL 5050 W. UNIVERSITY DRIVECITY OF DENTON,DENTON COUNTY TXSEFERINO A. HUIZARSURVEY, ABSTRACT # 51404.16.186/28/19 EXHIBIT H1 - EXISTING DRAINAGE AREA MAP ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" ZONE "AE" NON-SHADED ZONE X NON-SHADED ZONE X NON-SHADED ZONE X NON-SHADED ZONE X NON-SHADED ZONE X J:\3005\3005\Drawings\Engineering\Construction Plans\3005 site.dwg\6/28/2019 7:32 AM\James Whisler16150 Main Circle Drive, Suite 100 St. Louis, MO 63017 (636) 449-1175 / fax (636) 449-1176FISCHER 59CITY PROJECT: TBDPART OF A TRACT OF LANDIN THE SEFERINO A. HUIZARSURVEY, ABSTRACT # 51449.99 ACRESPREPARER'S SEAL 5050 W. UNIVERSITY DRIVECITY OF DENTON,DENTON COUNTY TXSEFERINO A. HUIZARSURVEY, ABSTRACT # 51404.16.186/28/19 EXHIBIT H3 - DETENTION DRAINAGE AREA MAP COOPERAGEW110TAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBeeeebbbbbeeebbbbbbDbbbbeeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaEEeeefff fffcccccccccceeefffffffeeeeeefffffffffffffffccccc BDDDCCCCCEEEDDedddddddddddddddeeeeeeeeeBBBBAAFFFFFFFFFFGMGMGMGMGMGMGMGMGMGMGMGMGMGMGGGMGGGHHJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJAAAAHHAkkkkkhhhhhhhhhhhf ff f ff f f ff fffjkjjjjjkkkkkkkkkfff f ff f f f f f jkfjjjjjkkkkkkkkkfff ff ff f fff f f fkkkkkhhhh hff fffffffffhhh kjjjjjkkkkkffffffffff fffffff ffffkkkkkhhhhhhhhf fDDfBBBBBBBKMKMKMKMKMKMGGGGGGGGGMGMGMGMGMGMGMGMGMGMGMGMGMGMBBBBGMGMGMKKKKKKKKKHHHHHHHHHAAAGMGMJJJJJJFor Construction 1/13/2020 16150 Main Circle Drive, Suite 100St. Louis, MO 63017(636) 449-1175 / fax (636) 449-1176FISCHER 59 3005 PART OF A TRACT OF LAND IN THE SEFERINO A. HUIZAR SURVEY, ABSTRACT # 514 49.99 ACRES Civil Engineering & Surveying Services PREPARER'S SEALCITY OF DENTON, DENTON COUNTY TX SEFERINO A. HUIZAR SURVEY, ABSTRACT # 514 03.19.18 EXHIBIT M-LANDSCAPE PLAN e e e e bb b b bb a a a a a e e e f f f f f fcccccccccc e e e f f f f ff f e e e e e e f f f f f f f ff fff f ff c cc c c DECIDUOUS TREE PLANTING Prune only broken branches Stakes to be even with lowest branches 1/2" rubber/plastic hose @ trunk Top of ball to be raised 3" above grade min. Backfill per spec. Remove rope, burlap, and wire basket from top half of root ball. 3" bark mulch do not cover trunk flair 4" earth saucer beyond excavation 2"x2" hardwood stakes with galvanized wire * 1:1 side slope on planting hole. 2x root ball dia. * Staking should be done only when: ·Planting in soft, loose soils ·Root balls with sandy soil, or wet clay ·Trees located in an extremely windy location Place root ball on unexcavated or tamped soil.x"1/2 x" 1/2 x" x" Till bed per spec with amendments PLAN VIEW SECTION VIEW Perennial/ annuals Subgrade per spec For spacing see planting schedule x"TYPICAL PERENNIAL PLANTING 2" Mulch bb b e e e b b b b b b b b b e e Grade Top of ball 2" above grade Remove burlap from 1/3 of Root Ball 3" mulch 4" earth saucer. If planted indivdually. Eliminate if in a bed. backfill per spec. loosened subsoil 6" MIN. SCARIFY ROOT BALL OF ALL CONTAINER STOCK TYPICAL SHRUB PLANTING NTS c c c c c ALUMINUM LANDSCAPE BED EDGING1 L-1 16150 Main Circle Drive, Suite 100 St. Louis, MO 63017 (636) 449-1175 / fax (636) 449-1176FISCHER 593005PART OF A TRACT OF LANDIN THE SEFERINO A. HUIZARSURVEY, ABSTRACT # 51449.99 ACRESCivil Engineering & Surveying ServicesPREPARER'S SEAL CITY OF DENTON,DENTON COUNTY TXSEFERINO A. HUIZARSURVEY, ABSTRACT # 51403.19.18EXHIBIT M1-LANDSCAPE PLANFor Construction 1/13/2020 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 15 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l APPENDIX E Stormwater Management Facility Operation and Maintenance Plan STORMWATER MANAGEMENT FACILITY OPERATION AND MAINTENANCE PLAN FISHER 59 Prepared for: HDA Architects Contact: Josh Goodman 16150 Main Circle Drive Suite 100 Chesterfield, MO 63017 Prepared by: 12300 Old Tesson, Suite 300D St. Louis, MO 63128 314-849-6100 314-849-6010 jacob@grimesconsulting.com GRIMES PROJECT #3005 05/20/19 Leonard J. Meers Professional Engineer E-28288 1 Stormwater Management Facility Operation and maintenance (O&M) Plan Table of Contents An O&M Plan is required for this development project to provide guidance for the post construction stormwater best management practices (BMPs). The document should be used by the property owner to ensure adequate maintenance and function per design of the post construction BMPs on site. TABLE OF CONTENTS I. Stormwater Management Facilities Description ....................................................................................... 2 A. General Site Description ....................................................................................................................... 2 B. Stormwater Management Facilities ..................................................................................................... 2 I. Water Quality BMPs ........................................................................................................................... 2 II. Site Contacts ............................................................................................................................................. 2 III. Maintenance Procedures ......................................................................................................................... 3 A. Bioretention Areas ............................................................................................................................ 3 B. Native Prairie Area ............................................................................................................................ 4 C. Corrective Actions and Modifications ................................................................................................... 5 D. Maintenance Materials ........................................................................................................................ 5 E. Safety..................................................................................................................................................... 5 IV. Inspection Procedures ............................................................................................................................. 5 V. BMP Waste Disposal ................................................................................................................................. 5 VI. O&M Plan Revisions ................................................................................................................................. 6 Inspection Checklist(s) .............................................................................................................................. 7 2 I. STORMWATER MANAGEMENT FACILITIES DESCRIPTION A. GENERAL SITE DESCRIPTION The Fisher 59 site is located at 5050 W. University Drive at the intersection of U.S. Highway 380 and Masch Branch Road. The improvements planned for the development consist of the construction of a 189,800-sf warehouse and office building with surrounding parking. To provide runoff reduction there are three bio-retention basins designed for the WQv storm. Area West – The bio-retention on the southwest side of the parking lot is a depressed landscape feature which stores, filters, and infiltrates stormwater runoff. The stormwater will sheet drain across the parking lot into the bio-retention cell via curb cuts, then filter through the soil media to the sand and gravel underdrain. The outfall is via the 4” perforated underdrain and larger storms are passed by overflow structure #15. Area East – The bio-retention on the southeast side of the parking lot is a depressed landscape feature which stores, filters, and infiltrates stormwater runoff. The stormwater will sheet drain across the parking lot into the bio-retention cell via curb cuts, then filter through the soil media to the sand and gravel underdrain. The outfall is via the 4” perforated underdrain and larger storms are passed by overflow structure #3. Area Southeast – The bio-retention on the east side of the entrance from U.S. Highway 380 is a depressed landscape feature which stores, filters, and infiltrates stormwater runoff. The stormwater will sheet drain across the parking lot into the bio-retention cell via curb cuts, then filter through the soil media to the sand and gravel underdrain. The outfall is via the 4” perforated underdrain and larger storms are passed by overflow structure #28. All BMPs which have been installed in BMP reserve areas are to be perpetually located within this area. Inspection or maintenance personnel may utilize the site plan located in Appendix A containing the locations of the BMPs within this development. B. STORMWATER MANAGEMENT FACILITIES I. WATER QUALITY BMPS Area BB-1 – Bio-retention on the east side of the entrance from U.S. Highway 380 Area BB-2 – Bio-retention on the southeast side of the parking lot. II. SITE CONTACTS HDA Architects Contact: Josh Goodman 16150 Main Circle Drive Suite 100 Chesterfield, MO 63017 jgoodman@hdai.com 3 III. MAINTENANCE P ROCEDURES A. BIORETENTION AREAS Following the maintenance procedures outlined in this plan for the stormwater facilities is imperative to ensure the proper function of the systems. The first year of operation of the system is especially critical for establishing benchmarks for the specific system onsite. 1. Inspection should be conducted after rainstorms to check for surface ponding that might indicate possible clogging. 2. Do not store soil or other material capable of clogging the surface on or adjacent to porous pavement. Routine Maintenance Activities The majority of this work consists of mowing, weeding, debris removal and should be done on monthly as needed basis. · Remove litter and debris. · Remove sediment. · Remulch void areas. · Treat diseased trees and shrubs. · Mow turf areas around basin. These activities can be completed without any prior correspondence with the City of Denton or the engineering consultant. Non-Routine Maintenance Activities This work consist of item such as slope stabilization, removal and replacement of top layer of filter or sand media and should be performed annually as needed. · Repair erosion at inflow points. · Repair outflow structures. · Unclog underdrain. · Regulate soil pH regulation. · Remove and replace dead and diseased vegetation. · Add mulch. Typical Maintenance Activities for Bioretention Areas Activity Schedule · Pruning and weeding to maintain appearance. · Mulch replacement when erosion is evident. · Remove trash and debris. As needed · Inspect inflow points for clogging (off-line systems). Remove any sediment. · Inspect filter strip/grass channel for erosion or gullying. Re-seed or sod as necessary. · Trees and shrubs should be inspected to evaluate their health and remove any dead or severely diseased vegetation. Semi-annually · The planting soils should be tested for pH to establish acidic levels. If the pH is below 5.2, limestone should be applied. If the pH is above 7.0 to 8.0, then iron sulfate plus sulfur can be added to reduce the pH. Annually · Replace mulch over the entire area. · Replace pea gravel diaphragm if warranted (or when the voids are obviously filled with sediment and water is no longer infiltrating). 2 to 3 years 4 B. NATIVE PRAIRIE AREA Native prairie meadows are a low maintenance alternative to high maintenance lawns and traditional landscapes. They are not, however, no maintenance landscapes. Some simple, but essential, post-planting care is necessary for successful establishment and long-term performance Mowing Mowing is used for three purposes: 1) Control of annual and biennial weeds in the first two years after seeding 2) Controlling cool season grasses and weeds in the third year of establishment and beyond, similar in its effect to prescribed burning 3) Preventing invasion by trees and shrubs Mowing can be accomplished using a heavy duty riding lawnmower, a wheeled brush mower, a string trimmer (“weed whacker”), or a tractor-mounted mower. String trimmers are the best, especially for small areas, since they can mow at a variety of heights, they lay down the cut material gently without clumping, and can be used in situations where mowers cannot be used (steep slopes and low wet areas). First Year: Mow the prairie seeding at six inches in height to keep back fast-growing annual weeds in the first growing season. Most prairie plants are slow-growing perennials, and are easily out-competed by annual weeds in the first year if not controlled. Mowing weeds before they set seed also helps reduce problems in following years. Do not allow weeds to get taller than 16 inches before mowing them down to six inches. When taller vegetation is cut down, the large amount of cut material can bury the young prairie seedlings. Expect to mow three times in the first year. Second Year: Mow annual and biennial weeds to a height of twelve inches in mid to late June, when most biennial weeds are in full bloom. This will prevent them from forming seed and re-infesting the area, and can kill some biennial weeds outright. Most prairie flowers and grasses will not be taller than twelve inches at this time, and remain unharmed by the mowing. It is important to time the June mowing to coincide with the bloom period of biennial weeds. This single mowing in the second year can be critical to long term success by controlling these often aggressive weeds before they can become firmly established. Some biennial weeds will re-grow and flower a second time after the June mowing. They should then be either cut back to the ground using pruning shears or a string trimmer, or carefully pulled up by the roots when the soil is moist after a rain. If biennial weeds, especially White or Yellow Sweetclover (Melilotus spp.) appear in the third growing season, they should again be cut down when in full bloom, or pulled up by the roots. If the plants have completed flowering and are forming seed, they should be cut or pulled and immediately removed from the prairie. Never allow biennial weeds to complete the seed formation process and re-infest the prairie, as they can become a longterm management problem. Third Year and Beyond: Spring burning should be initiated at the beginning of the third growing season If burning is not an option, mowing and raking the cut material can be substituted for burning to remove dead plant growth from the previous year. Raking off the cut material after mowing helps to expose the soil and encourage more rapid soil warming, favoring the heat-loving prairie flowers and grasses. Mow as close to the ground as possible, right down to the soil surface if possible. This closely mimics the effects of burning, and is nearly as effective in favoring the prairie plants over cool season weeds and grasses. Selective Weeding Problem weeds, especially those with taproots, can be carefully pulled or dug beginning in the second growing season. Pulling and digging is not recommended in the first year of establishment, as the small prairie seedlings are not yet well-rooted, and are easily disturbed and killed. By the second year, both biennial and perennial weeds that have become established will be evident. Biennial weeds can be carefully pulled, or cut at the base during flowering to kill them. Make sure to remove the plants prior to setting seed, to prevent re-infested in future years. 5 Sometimes an aggressive perennial weed becomes a problem in a prairie meadow. Windblown seeds can enter from adjacent areas and become established. This usually occurs in the first three years of the planting, before the prairie has matured and developed the thick sod that helps to repel weeds. In such cases, it is sometimes necessary to utilize herbicides to eliminate unwanted aggressive plants. C. CORRECTIVE ACTIONS AND MODIFICATIONS Any corrective actions required that will modify the BMP(s) design components are considered design modifications and must be reviewed by the City of Denton. The owner must consult the City of Denton, and will likely need an approved plan from a professional engineering consultant. D. MAINTENANCE MATERIALS In the event that any of the media or other surface materials needed to be replaced during routine or non-routine maintenance, the following are the requirements for material replacement. E. SAFETY Safety considerations should be taken when conducting maintenance. Hazards should be anticipated and avoided. Confined spaces should not be entered without proper training, monitoring and equipment. IV. INSPECTION PROCEDURES Stormwater Management Facilities shall be inspected by a qualified individual familiar with the operation of the facilities. Inspections during the first year shall take place at a minimum quarterly, using the BMP inspection checklist in Appendix C. At least one of the inspections should be performed after a storm exceeding 1 inch of rainfall in a 24 hour period, ideally approximately 24 to 48 hours after the storm to determine if the facility is draining as desired. After the first year of operation, quarterly inspections should be completed. V. BMP WASTE DISPOSAL Landfill and solid waste facility requirements shall be followed for all BMP waste. The owner is responsible for determining all State and/or local regulations for special waste that may be applicable. All sediment removed from the system shall be disposed according to current erosion and sediment control regulations. When cleaning, standing water, “clear and unpolluted”, can be decanted and discharged to the storm system. Water that has become turbid during cleaning should be pumped and hauled to an acceptable wastewater disposal facility or treated by filtration, such as pumped through a bag filter and discharged to the sanitary sewer system. A special discharge permit from the City of Denton is not required for discharging to the sanitary system if the total volume is less than 10,000 gallons. The flow rate pumped into the sanitary system shall not exceed 50 gpm. The following definitions shall be used as reference: Clear water: Water that has settled its solids for 24 hours and can be pumped out of the BMP without re- suspending the solids. 6 Unpolluted water: Any water that may be discharged under NPDES regulations into waters of the State without having to be authorized by a NPDES permit and which will not cause any violations of State or Federal water quality standards. VI. O&M PLAN REVISIONS Property owner should reference the City of Denton website or contact the City of Denton for current guidance on procedures for O&M Plan revisions. 7 INSPECTION CHECKLIST(S) Location: ______________________________________ ________ Owner Change since last inspection? Yes No Owner Name:________________________________________________ Owner Address: _____________________________________________ INSPECTION RATING SYSTEM 0 = Good condition. Well maintained, no action required. Satisfactory Performance. 1 = Moderate condition. Should monitor. Satisfactory Performance. 2 = Degraded condition. Routine maintenance and repair needed. Unsatisfactory Performance. 3 = Serious condition. Immediate need for repair or replacement. Unsatisfactory Performance. INSPECTION ITEMS RATING COMMENTS Provide stable conveyance into facility?0 1 2 3 N/A Excessive trash/debris/sediment accumulation?0 1 2 3 N/A Signs of erosion?0 1 2 3 N/A Excessive trash/debris/sediment?0 1 2 3 N/A Evidence of standing water? (Ponding, Noticeable Odors, Water Stains, Algae)0 1 2 3 N/A Evidence of clogging?0 1 2 3 N/A Dead vegetation/exposed soil?0 1 2 3 N/A Evidence of erosion?0 1 2 3 N/A Excessive trash/debris/sediment?0 1 2 3 N/A Signs of erosion or movement of mulch (or pea gravel)?0 1 2 3 N/A Evidence of oil/chemical/accumulation?0 1 2 3 N/A Evidence of standing water? (Ponding, Noticeable Odors, Water Stains, Algae)0 1 2 3 N/A Underdrain system (if equipped) broken/clogged?0 1 2 3 N/A Adequate plant covering present?0 1 2 3 N/A Is vegetation overgrown?0 1 2 3 N/A Dead vegetation/exposed soil?0 1 2 3 N/A Signs of mulch layer thinning (or pea gravel)?0 1 2 3 N/A Stable conveyance out of facility provided?0 1 2 3 N/A Excessive trash/debris/sediment accumlation?0 1 2 3 N/A Evidence of erosion at/around ?0 1 2 3 N/A Complaints from local residents?0 1 2 3 N/A Any public hazards observed (desribe if any)0 1 2 3 N/A *If any 2-3 ratings are given in Sections A-E of this checklist, list corrective actions recommended or completed at the time of this inspection. CORRECTIVE ACTIONS RECOMMENDED TO OWNER COMPLETED AT TIME OF INSPECTION Please attach photographs, with descriptions, showing current condition of system and any defeciencies noted in this inspections B. PRETREATMENT D. OVERFLOW/OUTLET STRUCTURE E. HAZARDS STORMWATER MANAGEMENT FACILITY MAINTENANCE INSPECTION CHECKLIST F. CORRECTIVE ACTIONS* Overall Drainage Area Conditions: Inspector: ________________________________________________________________ Date of Inspection: _________________________________________________________ G. PHOTOGRAPHS BIORETENTION/RAIN GARDEN A. INLET (If not piped, identify as overland flow) C. TREATMENT AREA AND VEGETATION Site Conditions: ___________________________________________________________________________________________________________________________________________ Job Number: ____________________________________________________________ Owner Phone Number: ______________________________________________________ NOTE TO INSPECTOR: All personnel entering any confined spaces must take appropriate safety measures and follow applicable OSHA regulations. Location: ______________________________________ ________ Owner Change since last inspection? Yes No Owner Name:________________________________________________ Owner Address: _____________________________________________ INSPECTION RATING SYSTEM 0 = Good condition. Well maintained, no action required. Satisfactory Performance. 1 = Moderate condition. Should monitor. Satisfactory Performance. 2 = Degraded condition. Routine maintenance and repair needed. Unsatisfactory Performance. 3 = Serious condition. Immediate need for repair or replacement. Unsatisfactory Performance. INSPECTION ITEMS RATING COMMENTS Provide stable conveyance into facility?0 1 2 3 N/A Excessive trash/debris/sediment accumulation?0 1 2 3 N/A Signs of erosion?0 1 2 3 N/A Excessive trash/debris/sediment?0 1 2 3 N/A Evidence of standing water? (Ponding, Noticeable Odors, Water Stains, Algae)0 1 2 3 N/A Evidence of clogging?0 1 2 3 N/A Dead vegetation/exposed soil?0 1 2 3 N/A Evidence of erosion?0 1 2 3 N/A Excessive trash/debris/sediment?0 1 2 3 N/A Signs of erosion or movement of mulch (or pea gravel)?0 1 2 3 N/A Evidence of oil/chemical/accumulation?0 1 2 3 N/A Evidence of standing water? (Ponding, Noticeable Odors, Water Stains, Algae)0 1 2 3 N/A Underdrain system (if equipped) broken/clogged?0 1 2 3 N/A Adequate plant covering present?0 1 2 3 N/A Is vegetation overgrown?0 1 2 3 N/A Dead vegetation/exposed soil?0 1 2 3 N/A Signs of mulch layer thinning (or pea gravel)?0 1 2 3 N/A Stable conveyance out of facility provided?0 1 2 3 N/A Excessive trash/debris/sediment accumlation?0 1 2 3 N/A Evidence of erosion at/around ?0 1 2 3 N/A Complaints from local residents?0 1 2 3 N/A Any public hazards observed (desribe if any)0 1 2 3 N/A *If any 2-3 ratings are given in Sections A-E of this checklist, list corrective actions recommended or completed at the time of this inspection. CORRECTIVE ACTIONS RECOMMENDED TO OWNER COMPLETED AT TIME OF INSPECTION Please attach photographs, with descriptions, showing current condition of system and any defeciencies noted in this inspections B. PRETREATMENT D. OVERFLOW/OUTLET STRUCTURE E. HAZARDS STORMWATER MANAGEMENT FACILITY MAINTENANCE INSPECTION CHECKLIST F. CORRECTIVE ACTIONS* Overall Drainage Area Conditions: Inspector: ________________________________________________________________ Date of Inspection: _________________________________________________________ G. PHOTOGRAPHS BIORETENTION/RAIN GARDEN A. INLET (If not piped, identify as overland flow) C. TREATMENT AREA AND VEGETATION Site Conditions: ___________________________________________________________________________________________________________________________________________ Job Number: ____________________________________________________________ Owner Phone Number: ______________________________________________________ NOTE TO INSPECTOR: All personnel entering any confined spaces must take appropriate safety measures and follow applicable OSHA regulations. Location: ______________________________________ ________ Owner Change since last inspection? Yes No Owner Name:________________________________________________ Owner Address: _____________________________________________ INSPECTION RATING SYSTEM 0 = Good condition. Well maintained, no action required. Satisfactory Performance. 1 = Moderate condition. Should monitor. Satisfactory Performance. 2 = Degraded condition. Routine maintenance and repair needed. Unsatisfactory Performance. 3 = Serious condition. Immediate need for repair or replacement. Unsatisfactory Performance. INSPECTION ITEMS RATING COMMENTS Provide stable conveyance into facility?0 1 2 3 N/A Excessive trash/debris/sediment accumulation?0 1 2 3 N/A Signs of erosion?0 1 2 3 N/A Excessive trash/debris/sediment?0 1 2 3 N/A Evidence of standing water? (Ponding, Noticeable Odors, Water Stains, Algae)0 1 2 3 N/A Evidence of clogging?0 1 2 3 N/A Dead vegetation/exposed soil?0 1 2 3 N/A Evidence of erosion?0 1 2 3 N/A Excessive trash/debris/sediment?0 1 2 3 N/A Signs of erosion or movement of mulch (or pea gravel)?0 1 2 3 N/A Evidence of oil/chemical/accumulation?0 1 2 3 N/A Evidence of standing water? (Ponding, Noticeable Odors, Water Stains, Algae)0 1 2 3 N/A Underdrain system (if equipped) broken/clogged?0 1 2 3 N/A Adequate plant covering present?0 1 2 3 N/A Is vegetation overgrown?0 1 2 3 N/A Dead vegetation/exposed soil?0 1 2 3 N/A Signs of mulch layer thinning (or pea gravel)?0 1 2 3 N/A Stable conveyance out of facility provided?0 1 2 3 N/A Excessive trash/debris/sediment accumlation?0 1 2 3 N/A Evidence of erosion at/around ?0 1 2 3 N/A Complaints from local residents?0 1 2 3 N/A Any public hazards observed (desribe if any)0 1 2 3 N/A *If any 2-3 ratings are given in Sections A-E of this checklist, list corrective actions recommended or completed at the time of this inspection. CORRECTIVE ACTIONS RECOMMENDED TO OWNER COMPLETED AT TIME OF INSPECTION Please attach photographs, with descriptions, showing current condition of system and any defeciencies noted in this inspections B. PRETREATMENT D. OVERFLOW/OUTLET STRUCTURE E. HAZARDS STORMWATER MANAGEMENT FACILITY MAINTENANCE INSPECTION CHECKLIST F. CORRECTIVE ACTIONS* Overall Drainage Area Conditions: Inspector: ________________________________________________________________ Date of Inspection: _________________________________________________________ G. PHOTOGRAPHS BIORETENTION/RAIN GARDEN A. INLET (If not piped, identify as overland flow) C. TREATMENT AREA AND VEGETATION Site Conditions: ___________________________________________________________________________________________________________________________________________ Job Number: ____________________________________________________________ Owner Phone Number: ______________________________________________________ NOTE TO INSPECTOR: All personnel entering any confined spaces must take appropriate safety measures and follow applicable OSHA regulations. 12300 Old Tesson Road p. 314.849.6100 Suite 300D f. 314.849.6010 St. Louis, Missouri 63128 16 R e t a i l C o m m e r c i a l I n s t i t u t i o n a l I n d u s t r i a l R e s i d e n t i a l APPENDIX F AESA Area Metes and Bounds Description AESA AREA #1 BEING a 3.67 acre tract of land situated in the Seferino A. Huiar Survey, Abstract Number 514 in the City of Denton, Denton County, Texas and being a portion of a called 49.99 acre tract of land described in deed to Fisher59 Properties LLC., recorded in Document Number 2019-21899 of the Official Records of Denton County, Texas and being a portion of Lot 1, Block A of the Fisher 59 Addition, recorded in Document Number 2018-527 of the Plat Records of Denton County, Texas and being more particularly described by metes and bounds as follows: BEGINNING at a 1/2” iron rod with cap stamped “EAGLE SURVEYING” found at the Southeast corner of said Fisher59 Properties tract in the North Right-of-Way (R.O.W.) line U.S. Highway 380 (variable width R.O.W.); THENCE N 87°54'04" W, with the South line of said Fisher59 Properties tract, the South line of said Lot 1, Block A and the common North line of said U.S. Highway 380, passing a 1/2” iron rod with cap stamped “EAGLE SURVEYING” found at the Southeast corner of said Lot 1, Block A at a distance of 389.55 feet and continuing with the South line of said Lot 1, Block A, a total distance of 395.21 feet; THENCE over and across said Fisher59 Properties tract and said Lot 1, Block A the following courses and distances; N 55°44'50" W, a distance of 34.49 feet; N 05°48'48" E, a distance of 19.18 feet; N 39°51'19" W, a distance of 81.79 feet; N 04°16'26" E, a distance of 177.91 feet; N 08°41'55" E, a distance of 124.63 feet; N 04°17'02" W, a distance of 234.99 feet; N 01°10'27" W, a distance of 103.41 feet; With a curve to the right having a radius of 40.00 feet, a delta angle of 88°00'44", a chord bearing of N 42°49'55" E, a chord length of 55.58 feet, and an arc length of 61.44 feet; N 86°50'18" E, a distance of 240.82 feet; N 78°28'31" E, a distance of 78.73 feet to the East line of said Fisher59 Properties tract from which a 1/2” iron rod with cap stamped “EAGLE SURVEYING” found at an angle point in the East line of said Fisher59 Properties tract bears N 07°20'21" W, a distance of 26.12 feet; THENCE S 07°20'21" E, with the East line of said Fisher59 Properties tract, a distance of 67.63 feet; THENCE over and across said Fisher59 Properties tract and said Lot 1, Block A the following courses and distances; S 68°40'53" W, a distance of 286.59 feet; S 13°37'17" E, a distance of 97.87 feet; S 01°04'17" E, a distance of 175.01 feet; S 40°28'03" E, a distance of 227.58 feet; S 10°34'01" E, a distance of 113.09 feet; S 20°58'19" W, a distance of 33.13 feet; S 32°33'40" W, a distance of 29.66 feet; S 01°33'28" W, a distance of 15.01 feet; S 87°54'04" E, a distance of 195.46 feet to the East line of said Fisher59 Properties tract; THENCE S 07°20'21" E, with the East line of said Fisher59 Properties tract, a distance of 20.27 feet to the POINT OF BEGINNING and containing 3.67 acres of land more or less. AESA AREA #2 BEING a 2.33 acre tract of land situated in the Seferino A. Huiar Survey, Abstract Number 514 in the City of Denton, Denton County, Texas and being a portion of a called 49.99 acre tract of land described in deed to Fisher59 Properties LLC., recorded in Document Number 2019-21899 of the Official Records of Denton County, Texas and being a portion of Lot 1, Block A of the Fisher 59 Addition, recorded in Document Number 2018-527 of the Plat Records of Denton County, Texas and being more particularly described by metes and bounds as follows: COMMENCING at a 1/2” iron rod with cap stamped “EAGLE SURVEYING” found at the Northeast corner of said Fisher59 Properties tract; THENCE S 07°20'21" E, with the East line said Fisher59 Properties tract, a distance of 366.79 feet to the POINT OF BEGINNING THENCE S 07°20'21" E, continuing with the East line of said Fisher59 Properties tract, a distance of 151.14 feet to a 1/2” iron rod with cap stamped “EAGLE SURVEYING” found at an angle point in the East line of said Fisher59 Properties tract; THENCE over and across said Fisher59 Properties tract and said Lot 1, Block A the following courses and distances; N 56°36'02" W, a distance of 26.05 feet; S 88°44'09" W, a distance of 277.19 feet; N 78°45'55" W, a distance of 57.41 feet; With a curve to the right having a radius of 20.00 feet, a delta angle of 90°46'40", a chord bearing of N 33°22'35" W, a chord length of 28.48 feet, and an arc length of 31.69 feet; N 10°51'57" E, a distance of 77.12 feet; N 01°51'18" E, a distance of 53.10 feet; N 17°55'55" W, a distance of 78.19 feet; N 03°56'37" W, a distance of 136.68 feet; N 13°52'24" E, a distance of 52.52 feet; S 69°06'07" E, a distance of 28.50 feet; S 50°17'29" E, a distance of 428.35 feet to the POINT OF BEGINNING and containing 2.33 acres of land more or less.