WATER QUALITY IMPACT ASSESSMENT (WQIA) FORM

Transcription

1 WATER QUALITY IMPACT ASSESSMENT (WQIA) FORM Name: CCW Development Associates, L.L.C. Street Address: Telephone Number(s): 1209 Laskin Road, Virginia Beach, VA (757) Geographic Property Identification Number (GPIN): (Please call Dept. of Public Works for GPIN information at ) City Map Grid (determined by city staff): Letter Number Soil Series (determined by city staff): PLEASE DESCRIBE THE PROPOSED PROJECT: A WQIA shall be required for any proposed land disturbance, development or redevelopment within the Resource Protection Area (RPA). Construction of: Commercial building with associated parking, walkways and retaining wall Are you seeking or have you already obtained permits from other Local, State or Federal agencies in conjunction with this application? If yes, please describe: Yes, VMRC, DEQ, & Army Corps of Engineers, Regional General Permit for non-tidal wetlands impact Has there been a prior CBPA variance(s) granted for the subject parcel? YES X NO x If yes, please provide the date of the prior variance(s): N/A Are the conditions of the prior variance present and functioning as intended? YES NO If no, please explain: N/A

2 Please check all of the following items that apply to your project: 1. When was the lot or parcel recorded: X Prior to October 1, 1989 Between October 1, 1989 and January 1, 2004 After January 1, Location of Project: X a. Resource Management Area (RMA) X b. Resource Protection Area (RPA) X Seaward 50 Feet Portion of Buffer Area X Landward 50 Feet Portion of Buffer Area Slopes Exceeding 6% Grade (Highly Erodible Soils) Variable Width Buffer (landward of 50' landward buffer) 3. Amount of land disturbance associated with proposed improvements: X Less than 2,500 square feet. More than 2,500 square feet. 4. Description of proposed improvements: X a. Commercial development X g. Driveway, walks, paths or other b. Industrial development h. Deck c. Multi-family residential i. At-grade patio d. New construction j. Swimming pool e. Building addition X k. Other f. Geothermal well system see below If other, please provide a brief description: retaining wall, drive aisle, dumpster area, and parking for building Approximate square footage of proposed impervious cover: 22,263 sq. ft. Are the improvements identified with a violation of the CBPA Ordinance: X NO YES 5. Material to be used to cover land surface: X a. Wood h. Porous Paving b. Brick X i. Roof X c. Concrete j. Swimming pool X d. Asphalt X k. Retaining wall e. Paving Blocks height of wall: 4' width of footer: 3' f. Gravel l. Other g. Stone If other, please provide a brief description: 2

3 6. Will the project require any of the following: X a. Excavation Approximate amount: X b. Filling Approximate amount: X c. Grading Approximate area: 4,000 (foundation) 100 Cu. Yds. 25, Existing Site Conditions: X a. Heavily Wooded X h. Understory/Brush b. Sparsely Wooded i. Leaves/Needles c. No Trees j. Bare Soil X d. Marsh/Swamp k. Eroding Soils/shoreline e. Stream l. Waterfront Property f. Ravine or Ditch X m. Paved g. Grass X n. Other If other, please provide a brief description: 8. Impacts on existing vegetation (provide a number in the space provided below): a. Approximate square footage of tree canopy to be removed: b. Number of canopy trees to be removed: c. Number of understory canopy to be removed: d. Number of dead, diseased or dying trees removed: e. Number of trees to be pruned: f. Approximate square footage of forest floor/leaf litter to be removed: g. Approximate linear footage of shoreline to be managed: 24,000 sq. ft. 9. Proposed methods to minimize site impacts: a. Degradable erosion control matting X i. New structure situated on lot so as to minimize the encroachment into X b. Silt Fence RPA X c. Tree protection barrier X j. Multi-story building X d. Root protection zone k. Cluster development X e. Single construction entrance X l. Define limits of construction X f. Designated vehicle/contractor parking area X 10' outboard of X g. Limit construction activity to flat areas of site (as much as possible) improvements h. Hard surface stockpile and staging area 15' outboard of improvements Above top of bank m. Other: 0 24,000 sq. ft. 3

4 10. Proposed mitigation measures: a. Buffer restoration standard X Buffer restoration equal to two (2) times the proposed impervious cover. Amount required: 6,059 sq. ft. (RPA) Amount proposed: 7,159 sq. ft. Buffer restoration equal to one (1) times the area of redeveloped impervious cover. Amount required: Amount proposed: or X X A ten (10) percent reduction in pollutant removal load in-lieu of buffer restoration equal to one (1) times the area of redeveloped impervious cover. Ground Cover of Pine Needles Ground Cover of Mulch Ground Cover of Leaves b. Provide a number in the space provided: tbd a. Number of new canopy trees proposed tbd b. Number of new understory trees proposed tbd c. Number of new shrubs proposed A full complement of vegetation consisting of canopy trees, understory trees, shrubs, grasses and groundcovers shall be provided towards the buffer restoration requirements. Every restoration unit (400 sf) requires: One (1) canopy tree, two (2) understory trees and three (3) shrubs or One (1) canopy tree, one (1) understory tree, two (2) large shrubs and three (3) shrubs as per the restoration establishment table, Restoration / Establish Table A found in the Riparian Buffers Modification and Mitigation Guidance Manual. Plant material for the buffer restoration meeting the following standards: Canopy trees are to reach a height of thirty-five (35) feet or greater at maturity and are to be installed at 1½ to 2 caliper for deciduous plant material and at a height of 6 for evergreen plant material. Understory trees are to reach a height of twelve (12) feet to thirty-five (35) feet at maturity and are to be maturity and are to be installed at ¾ to 1½ caliper for deciduous plant material and at a height of 4 for evergreen plant material. Large shrubs are to reach a height of ten (10) feet or greater at maturity and are to be installed at a minimum height of 36 at the time of installation. Small shrubs may reach up to ten (10) feet at maturity and are to be installed at a minimum height of 15 at the time of installation. 4

5 11. Best Management Practices (BMP's) utilized: X a. Rooftop Disconnection j. Constructed Wetland X Gravel Drip Intercept k. Wet Pond Gravel Downspout Intercept l. Extended Detention Pond b. Grass Channel m. Living Shoreline c. Soil Amendments d. Vegetative Roof e. Rainwater Harvesting Lower tree limb removal at shoreline n. Sand and Gravel Underdeck Treatment f. Permeable Pavement/Pavers X o. Structural / Manufactured BMP g. Infiltration Bed Type: stormtech and Filterra units X h. Bioretention i. Dry Swale p. Other: 12. Can you avoid locating the improvements on the most sensitive portion of the site and is there a suitable area to do so? YES X NO Please specify means taken to avoid: majority of the site is within the RPA and only trying to building on the area connected to an improved public R/W 13. If an alternative location is not feasible please state why this project deserves special consideration: the proposed improvements are on a site with 14 previosly recorded lots and half of the lots and area will be preserved from development Please specify means to minimize the impacts of development for water quality protection: Silt Fence, Tree Protection/Barriers, Limit construction activity to flat areas of site, Single construction/access way, Stockpile construction materials and debris on hard surfaces, and Barriers to define limits of construction activity/land disturbance. 14. Please describe the construction sequencing for this project: Obtain permits, hold pre-construction meetings, install silt fence and tree protection, construct improvements, install buffer restoration and mitigation, BMP's, and immediately seed and mulch denuded areas upon completion of the project. Also see the attached construction sequence as described by the contractor 5

6 15. Please describe the topography of the site and the condition below that best depicts the area where the improvements are proposed. 6