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Home My WebLink About22262_Cores New Pond Location_SIGNEDTRIANGLE TESTING LAB, Inc. FL REG. #31012 4750 Royal Palm Beach Boulevard West Palm Beach, Florida 33411 (561) 790-3049 e-mail: triangle2992@gmail.com Date: October 22, 2019 To: Saint Lucie County Building Department Re: PRELIMINARY SUBSURFACE SOIL INVESTIGATION - SYNERGY HOMES SUITABILITY OF EXCAVATED SOILS FROM PROPOSED POND LOCATION 3000 SEMINOLE ROAD, FORT PIERCE, FL Dear Sirs: The subsurface soils at the above-referenced site have been investigated and we have determined that soils excavated from the proposed pond location are suitable for use as-is for compacted fill in residential building pads and are capable of supporting the structural foundation design load of 2500 psf. One ten-foot auger hole was investigated and found to contain soils consistent with those in the surrounding area, which are capable of supporting loads not to exceed 2500 pounds per square foot. One fifteen-foot probe penetration test was performed to determine the density of the existing soil. These tests, performed in compliance of Section R401.4 of the 2017 Florida Building Code, Residential, provided sufficient evidence that the underlying soils will support the proposed structure. Per the attached SCS Soil Survey information, the soils are consistent with and classified as Winder Loamy Sand. and are not expansive, compressive or otherwise of qu estionable characteristics. Therefore, per Section R401.4, additional soil tests in accordance with FBC 1803.6 beyond this preliminary report are not necessary. Respectfully submitted, Richard Boyette, FL PE #42485 Vice President Attachments: Log of Borings SCS Map & Soil Description DATE: July 28, 2020 File # 22262 This document has been digitally signed by Richard Boyette, FL PE 42485 on 7/28/2020 using an SHA-1 authentication code. Printed copies of this document are not considered signed and sealed and the SHA-1 authentication code must be verified on any electronic copies. LOG OF TEST BORINGS - 07/27/20 Depth Auger Hole 1 Pen Hole 2 Depth N Remarks 1 DARK BROWNISHGRAY SANDY LOAM ____________________________________ LIGHT GRAY SANDY LOAM ____________________________________ GRAY SAND ____________________________________ LIGHT GRAY SAND WITH SOME SHELL FLECKS DARK BROWNISHGRAY SANDY LOAM ________________________________ LIGHT GRAY SANDY LOAM ________________________________ GRAY SAND ________________________________ LIGHT GRAY SAND WITH SOME SHELL FLECKS 1 5-4 5-4 5-5 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 LIGHT GRAY SAND WITH SHELL 11 12 Water Table: 8” Below Grade 13 14 15 TERRAIN NOTES Site Elevation: NOT GIVEN: NGVD Drainage Status: Natural Vegetation: Grasses Construction Status: Cleared Hole Status: () Hole remained open (X) Hole closed SCS Soil Classification: Winder Loamy Sand File #22262 SPECIFICATION REFERENCES 1.ASTM D1452: Standard Practice for Soil Investigation & Sampling by Auger Borings 2.ASTM D2922: Standard Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth) 3.ASTM D1586: Standard Test Method for Penetration Test and Split-Barrel Sampling of Soils. 4.ASTM D2974-13: Standard Test Method for Moisture, Ash, and Organic Matter of Peat and Other Organic Soils Soil Map—St. Lucie County, Florida Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 6/8/2020 Page 1 of 330402003040300304040030405003040600304070030408003040900304100030411003040200304030030404003040500304060030407003040800304090030410003041100558400558500558600558700558800558900559000 558400 558500 558600 558700 558800 558900 559000 27° 29' 34'' N 80° 24' 33'' W27° 29' 34'' N80° 24' 6'' W27° 29' 2'' N 80° 24' 33'' W27° 29' 2'' N 80° 24' 6'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 17N WGS84 0 200 400 800 1200 Feet 0 50 100 200 300 Meters Map Scale: 1:4,750 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. SITE Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 11 Chobee loamy sand, frequently ponded, 0 to 1 percent slopes 31.3 31.5% 16 Hilolo loamy sand 9.3 9.4% 38 Riviera fine sand, 0 to 2 percent slopes 1.0 1.0% 55 Winder loamy sand 57.9 58.2% Totals for Area of Interest 99.5 100.0% Soil Map—St. Lucie County, Florida Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 6/8/2020 Page 3 of 3 St. Lucie County, Florida 55—Winder loamy sand Map Unit Setting National map unit symbol: 1jpwk Elevation: 0 to 30 feet Mean annual precipitation: 49 to 58 inches Mean annual air temperature: 70 to 77 degrees F Frost-free period: 350 to 365 days Farmland classification: Farmland of unique importance Map Unit Composition Winder, drained and bedded, and similar soils: 67 percent Winder, hydric, and similar soils: 15 percent Minor components: 18 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Winder, Drained And Bedded Setting Landform: Flats on marine terraces Landform position (three-dimensional): Talf Down-slope shape: Concave, convex Across-slope shape: Linear Parent material: Sandy and loamy marine deposits Typical profile A - 0 to 6 inches: loamy sand E - 6 to 12 inches: sand Btg1 - 12 to 33 inches: sandy clay loam Btg2 - 33 to 49 inches: sandy loam Cg1 - 49 to 61 inches: loamy sand Cg2 - 61 to 80 inches: sand Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 12 to 18 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 4.0 Available water storage in profile: Low (about 5.8 inches) Map Unit Description: Winder loamy sand---St. Lucie County, Florida Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/28/2020 Page 1 of 4 Landform: Drainageways on marine terraces, flats on marine terraces Landform position (three-dimensional): Dip Down-slope shape: Linear Across-slope shape: Concave Hydric soil rating: Yes Hallandale Percent of map unit: 3 percent Landform: Flats on marine terraces Landform position (three-dimensional): Interfluve, talf Down-slope shape: Convex Across-slope shape: Linear Hydric soil rating: No Riviera Percent of map unit: 3 percent Landform: Flats on marine terraces Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear Hydric soil rating: Yes Floridana Percent of map unit: 3 percent Landform: Depressions on marine terraces Landform position (three-dimensional): Dip Down-slope shape: Concave Across-slope shape: Concave Hydric soil rating: Yes Wabasso Percent of map unit: 2 percent Landform: Flats on marine terraces Landform position (three-dimensional): Talf Down-slope shape: Convex Across-slope shape: Linear Hydric soil rating: No Winder, shell substratum, hydric Percent of map unit: 2 percent Landform: Flats on marine terraces Landform position (three-dimensional): Talf Down-slope shape: Concave, linear Across-slope shape: Linear Hydric soil rating: Yes Wabasso, gravelly substratum Percent of map unit: 2 percent Landform: Flats on marine terraces Landform position (three-dimensional): Talf Down-slope shape: Convex Across-slope shape: Linear Map Unit Description: Winder loamy sand---St. Lucie County, Florida Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/28/2020 Page 3 of 4