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HomeMy WebLinkAboutCUP 260C; PALOMAR TRANSFER STATION; WETLAND DELINEATION REPORT; 2004-01-01I I I I I I I I I I I I I I I I I I I WETLAND DELINEATION REPORT PALOMAR TRANSFER STATION SITE EXPANSION Prepared for: City of Carlsbad 1635 Faraday Avenue Carlsbad, CA 92008-7314 Prepared By: Greystone Environmental Consultants, Inc. 104 70 Old Placerville Road, Suite 110 Sacramento, California 95827 9474 Kearny Villa Road, Suite 103 San Diego, California 92126 January 2004 I I I I I I I I I I I I I I I I I I I WETLAND DELINEATION REPORT PALOMAR TRANSFER STATION SITE EXPANSION Prepared for: City of Carlsbad 1635 Faraday Avenue Carlsbad, CA 92008-7314 Prepared by: Greystone Environmental Consultants, Inc. 10470 Old Placerville Road, Suite 110 Sacramento, California 95827 9474 Kearny Villa Road, Suite 103 San Diego, California 92126 January 2004 I I I I I I I I I I I I I I I I I I I WETLAND DELINEATION REPORT • INTRODUCTION On behalf of the City of Carlsbad, Greystone Environmental Consultants, fuc. (Greystone) conducted a wetland delineation on the site of a proposed 3.9 acre expansion site of the Palomar Transfer Station expansion site (project site). The project site is located east of Orion Street, north of Palomar Airport Road and south of Faraday Avenue in the City of Carlsbad, California. This location corresponds to a portion of the southeastern quadrant (Agua Hedionda Grant), Township 12S, Range 4W of the "San Luis Rey" U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle (Figure 1 ). PROJECT DESCRIPTION The proposed project would be an amendment to the approved Conditional Use Permit (CUP) for the existing solid waste transfer facility (Palomar Transfer Station). The proposed amendment would include modifications to current operating conditions, physical modifications to the existing facility/structures, and expansion of the use into an area not previously within the transfer station boundaries. The project site is located at the southeast comer of the Faraday Avenue/Orion Street intersection. The proposed expansion area consists of 3.9 acres at the northern edge of the property immediately adjacent to the roadway intersection. The expansion area would be graded and used for storage of empty containers and parking. ENVIRONMENTAL SETTING The proposed project site is located in the central part of the City of Carlsbad, in northwestern San Diego County, California (Figure 1 ). Topography is relatively flat, with the site elevation at approximately 320 feet above mean sea level. The site includes 0.7 acre of disturbed annual grassland, 0.3 acre of coastal sage scrub (which will be avoided), 0.4 acre of ornamental plantings, 2.5 acre of bare ground and 0.05 acre of ephemeral drainage with herbaceous seasonal wetland vegetation. Characteristic natural habitats in the project region include annual grassland, coastal sage scrub, and chaparral. The climate of the project region is characterized by mild, dry summers and mild, dry winters (WRCC, 2001). The mean annual precipitation is between 10 and 13 inches and the mean annual air temperature between 60 degrees and 62 degrees Fahrenheit. The frost-free season is 300 to 340 days annually. The winter growing season has only light frost. DELINEATION METHODOLOGY Greystone performed the USACE jurisdictional wetland delineation in accordance with the 1987 U.S. Army Corps of Engineers Wetland Delineation Manual (USACE 1987). Greystone biologists Gary Halsey and Julia Dumars conducted the wetland delineation on December 9, 2003. Data collection points were chosen at representative locations along the drainage swale, including transition zones between potential wetland and upland areas, and detailed information on vegetation, soils, and hydrology characteristics were taken for each data point. Munsell Soil 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I I Pacific Ocean ypit ~ ~-::=r::::-- ~::~"'~~ Sources: USGS 7.5' Quadrangles, San Luis Rey and San Marcos, California Legend D Project Boundary 0 500 1,000 2,000 ;. , - -"'"""'=""-~~~--: r ~. "n 3,000 _, ' ' 4,000 Feet PALOMAR TRANSFER STATION EXPANSION FIGURE 1 VICINITY MAP ANALYSIS AREA: CARLSBAD, CALIFORNIA Date: 02/03104 File: X:\1613\ .. \regional.mxd Drawn By. JR I I I I I I I I I I I I I I I I I I I Wetland Delineation Report Color Charts were used to determine soil chroma and value. Mapped soil types were determined from United States Geological Service (USGS) 1973 soil survey of the San Diego area (USGS 1973). The indicator status of dominant plant species was determined by using the U.S. Fish and Wildlife Service National List of Vascular Plant Species that Occur in Wetlands: 1996 National Summary (USFWS 1996) and the USACE Wetland Plants List in San Diego County (USACE 2003). Determination of the jurisdiction of California Department of Fish and Game in accordance with the California Fish and Game Code was based on presence of one of the three wetland criteria listed above in association with a natural stream channel, lake or other waterbody. Data sheets documenting the basis for determining the presence or absence of jurisdictional wetlands or other Waters of the U.S. were completed for representative locations and are included with this report. The boundaries of the man-made ephemeral drainage, including the portion which supported seasonal herbaceous wetland vegetation, were mapped using a Trimble GPS unit and overlain on an aerial photograph. The acreage of the ephemeral drainage was calculated digitally, and compared favorably to paced dimensions in the field. This information is provided on the attached Wetland Delineation Map, Figure 2. RESULTS One ephemeral drainage was mapped in the central portion of the project area, at the southern edge of the expansion area. See Figure 2, Wetland Delineation Map, for location and acreage detail. Figure 3 provides a key to photograph locations, indicating where photos in Figures 4 through 10 were taken) Water enters the graded drainage swale as runoff from a paved portion of the existing developed Transfer Station and is diverted in a curb cut under the fence (see Figure 4). The drainage water has developed a swale flowing west, approximately 2.5 feet wide and 22 feet long, which widens to 4 to 5 feet where it doglegs south-southwest, then west and continues another 30 feet (see Figure 5). This portion of the drainage supports no vegetation. The top one to two inches of soil have a low chroma ( dark color) and a high volume of decomposed organic matter accumulated over high chroma (light color), clayey sand or sandy clay loam. This is an indication of recent hydric development in the top layer. Just downstream is a eucalyptus copse with no wetland vegetation or soils. The swale then extends to a more depressed channel, bordered by non-native plants including pampas grass and eucalyptus (see Figure 6). This upper portion of the man-made runoff swale is not jurisdictional. The low, flat central portion of the swale is dominated by dubius rush (Juncus dubius), with a small population of nutsedge (Cyperus eragrostis) at the downstream end (see Figure 7). There are also scattered stands of arroyo willow (Salix lasiolepis), tamarisk (Tamarix parviflora), and curly dock (Rumex crispus). These are wetland indicator species, but do not exclude the classification of a seasonal or ephemeral drainage. Hydrologic indicators include: a well defined swale, <0.2% gradient, some silt stained/water deposited leaves and moist (but not saturated) soil early in the rainy season. This suggests that the drainage may be saturated or ponded between 14 days and 30 days during the rainy season in most years. When the site was visited four weeks later on January 7, 2004, following several rain storms, the wetland was ponded, confirming this seasonal saturation or ponding. The soil in this area has been disturbed, and possibly graded. In soil profiles some angular gravel, asphalt rock, trash and concrete were encountered. Soils indicators are not decisive, but include chromas between two and three in the upper layer 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station 3 January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I ~-Pacific Ocean I ;'1 ,'ll.'/"'~ Notes: Field Delineation conducted December 9, 2003. I Legend Project Boundary I -Ephemeral Drainage 0 Curb Cut 0 50 100 E3 E3 200 300 EC::::==:::E:==31 Feet I ~ Culvert PALOMAR TRANSFER STATION EXPANSION F/GURE2 WETLAND DELINEATION MAP ANALYSIS AREA: PALOMAR TRANSFER STATION Date: 01/09/04 File: X:\16131 ... I1442_1ocal1on_phot.mxd Drawn By: JR I I I I I I I I I I I I I I ,, . I 'I Pacific Ocean Notes: Field Delineation conducted December 9, 2003. I Legend I Project Boundary Ephemeral Drainage Photo Figure Location efJ' 0 50 100 200 300 EE33::J:E33:===i===31 Feet PALOMAR TRANSFER STATION EXPANSION FIGURE3 PHOTO FIGURE LOCATION KEY ANALYSIS AREA: PALOMAR TRANSFER STATION I l ______________________________ J~Dajtei· 0~1/~09/~04iiii:=::::~Fi~1le;: X~:11~61~31~ ... 11:44:2-:lo:cat:ion:_p:ho:t.m:xd] Drawn By: JR I I I I I I I I I I I I I I I I I I I Wetland Delineation Report Figure 4 Photo facing SE. View of curbcut inlet and upper end of swale. Drainage-caused channel clearly visible (Non-wetland). Photo taken January 7, 2004. Figure 5 Photo facing SE. Continued view of curbcut inlet and upper end of swale (Non­ wetland). Photo taken January 2, 2004. 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station 6 January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I I Wetland Delineation Report Figure 6 ' . , ., . .,- • "',.ii"-~""·'~ ~ft,. Photo facing SE. View of upper end of wetland/upland transition below eucalyptus copse. Tall fennel plant is on transition line. Slope to upland visible on left side of photo, and transition to wetland at right side. Photo taken January 7, 2004. Figure 7 -~I. .~ ... ~~ Photo facing SE. View across seasonal herbaceous wetland portion of the ephemeral drainage. Rushes and tamarisk visible in foreground, with ornamental plantings along fenceline in background. Photo taken January 7, 2004. 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station 7 January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I I Wetland Delineation Report (associated with increased organic matter), and some migration of clays with a low concentration of high contrast mottling, and occasional gleying in a limited depth range. These factors suggest that the existing disturbed and possibly filled soil is developing into a hydric soil over time from the existing Transfer Station directed runoff. Adjacent upland is distinguishable from the isolated herbaceous seasonal wetland drainage swale due to the following factors: a) There is a vegetation shift to facultative upland and upland species, including Italian ryegrass, bristly ox tongue, burdock, and sweet fennel on the west side and landscaped plants (geranium sp., fountain grass, pampas grass, ice plant, oleander) on the east side (see Figures 8 and 9); b) Upland soils have high chromas ( 4 and above), few or no mottles, no gleying, less organic matter, less moisture, more sand, and less clay; Upland hydrology is marked by a slight but distinct topographic grade break from a flat channel bottom to a side slope. The upland has no water stained leaves and there is no evidence of sustained seasonal ponding or saturation. The disturbed, isolated, seasonal wetland portion of the drainage swale as mapped is an oblong shape beginning at the downstream end of the stand of eucalyptus trees described in the discussion on the northern portion of the drainage, and ending at an American sycamore tree (approximately 15-20 years old) and an arroyo willow (see Figure -9). Downstream of the sycamore, there is a slight rise in elevation of the swale and a layer of non-decomposed leaf litter that is not water deposited or stained. The soil has less organic matter in the upper layer, less clay, less moisture, higher chroma (4) and few or no mottles and no gleying. The facultative wetland vegetation (Juncus, Cyperus, Rumex, etc.) gives way to rye grass, bristly ox-tongue and field grasses such as barley, fescue and slender oat. The swale continues without hydric soils, wetland vegetation, or distinct hydrologic indicators through another copse of eucalyptus trees to an 18-inch culvert that is installed under the entrance road to the Transfer Station (Orion Street). Water does locally pond in a small area at the inlet to this culvert on occasion, as evidenced by a small area of deep soil cracking and occasional oxidized rhizospheres (see Figure 10). However, hydrologic indicators were used to determine that this ponding is infrequent and rarely flows through the perched culvert inlet. Ponding that does occur is from localized Transfer Station runoff from the lower curb cut shown on Figure 3. Soils at the inlet are high chroma (6), sandy soils, with no mottles or gleying. There is no wetland vegetation at this location. At the time of survey, there was no evidence of flow through the culvert in the last runoff season and little or no evidence of flow in recent years into the unvegetated man-made ditch that drains off-site. The culvert itself is partially blocked by leaf litter and other debris. The culvert inlet area and man-made ditch downstream of this culvert do not support hydric soils or vegetation and lack hydrologic indicators, and therefore are not wetlands or other jurisdictional waters of the U.S. 1613-Wetland Delineation Report(0Z.05.04)-MTD.doc Palomar Transfer Station 8 January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I Wetland Delineation Report Figure 8 Facing NEE. View from upland (bristly ox-tongue and fennel in foreground) across narrow seasonal wetland, to upland ornamental vegetation (oleander and pampas grass). Photo taken January 2, 2004. Figure 9 Facing NE. View of lower end of wetland (background)/upland (foreground) transition at sycamore tree. Looking toward drainage. Photo taken January 2, 2004. 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station 9 January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I Wetland Delineation Report Figure 10 Photo facing NE. View of dried, infrequently ponded area at lower end of swale and culvert outlet under PTS access road. (Non-wetland) Photo taken January 2, 2003. The 0.048 acre area of seasonal herbaceous wetland mapped by Greystone using the three­ parameter approach (including hydric vegetation assessment, soil pits, hydrological indicator assessment and data forms) is considerably shorter downstream and narrower than the 0.1 acre herbaceous wetland previously mapped by DUDEK biologists. The original (DUDEK) vegetation mapping appeared to conservatively map all areas which currently support facultative and facultative upland species, predominantly bristly ox-tongue and ryegrass, as wetland, without supporting wetland soils or hydrology indicators. These are F AC species that can be either wetland or upland, depending on soils and hydrology indicators. In this letter report we have clearly shown that these species border the small man-made drainage channel which supports seasonal wetland plants, but have soils and hydrological characteristics that do not meet the criteria for jurisdictional wetlands. DETERMINATION OF IMPACT TO WATERS OF THE U.S./THE STATE The disturbed ephemeral drainage swale on the project site which supports some seasonal wetland vegetation, is smaller than 0.05 acres, hydrologically isolated from surrounding waters and wetlands, and is artificially supported by stormwater runoff from the main area of the Transfer Station. Therefore, it is not within the jurisdiction of the Army Corps of Engineers 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I I Wetland Delineation Report under Section 404 of the Clean Water Act. fu the absence of directed runoff from the transfer station, the drainage would revert to upland. It is not tributary to any lake, river or stream. Removal of the wetland will not substantially divert or obstruct the natural flow or substantially change the bed, channel, or bank of any river, stream, or lake or use materials from a streambed, and therefore does not require a Fish and Game Code 1603 Streambed Alternation agreement. Direct impacts to plant communities are not considered significant because the plant communities that would be impacted are not considered to be sensitive. Removal of the 0.048- acre drainage swale seasonal herbaceous wetland may require a Clean Water Act Section 401 Water Quality Certification, and potentially some offsetting mitigation, from the Regional Water Quality Control Board (Baczkowski 2003). SUMMARY This man-made ephemeral drainage swale in graded soils is fed by Palomar Transfer Station roof and pavement runoff. The central portion supports some seasonal herbaceous wetland vegetation and is developing some hydric soil characteristics. There are no obligate wetland plant species present in the drainage. It is conservatively an isolated and disturbed seasonal wetland that is not under the jurisdiction of the USACE because it is less than 0.1 acre and is not connected or adjacent to wetlands or other waters of the U.S. It is smaller than 0.05 acres, isolated, and the water is supplied by transfer station roof and pavement runoff, as opposed to natural runoff. This ephemeral drainage is of limited functional value as it is seasonal, disturbed, small, isolated, and surrounded by ornamental vegetation and solid waste management (industrial) activities. Therefore, it also has very limited wildlife value. It is created by stormwater runoff local to the Transfer Station, but does provide the functional value of absorption (percolation) and evapotranspiration of this localized urban runoff. 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station 11 January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I I Wetland Delineation Report REFERENCES Baczkowski, Stacey. San Diego Regional Water Quality Control Board (SD-RWQCB). Personal conversation with Julia Dumars. December 18, 2003. Bryant, Shannon. San Diego Field Office, U.S. Army Corps of Engineers. (SD-USA CE). Personal conversation with Julia Dumars. December 18, 2003. U.S. Army Corps of Engineers. (USACE). 2003. Website (http://www.spl.usace.army.mil/regulatory/plants/sdg.htm. Wetlands Plants List in San Diego County (under the jurisdiction of the Regulatory Branch of United States Army Corps of Engineers--Los Angeles District -downloaded from the USFWS I Cal Flora 1996 database) U.S. Army Corps of Engineers. (USACE). 1987. Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1. U.S. Army Environmental Laboratory Waterways Experiment Station. Vicksburg, Mississippi. United States Fish and Wildlife Services. (USFWS). 1996. U.S. Fish and Wildlife Service National List of Vascular Plant Species that Occur in Wetlands: 1996 National Summary United States Geological Service (USGS). 1973. Soil Survey, San Diego Area, California, Part 1. United States Department of the Agriculture. Bowman, R.H. Western Regional Climate Center (WRCC). 2001. Website: http://www.wrcc.dri.edu/, accessed 2003. 1613-Wetland Delineation Report(02.05.04)-MTD.doc Palomar Transfer Station 12 January 2004 Greystone Environmental Consultants, Inc. I I I I I I I I I I I I I I I I I I I Routine Wetland Delineation Forms Palomar Transfer Station Wetland Delineation December 9, 2003 IATAFORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) I I I Project/Site: Palomar Transfer Station Applicant / Owner Allied Waste Investigators: Gary Halsey and Julia Dumars Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? (If needed, explain on reverse) lEGETATION I I I Dominant Plant Species 1 Plantanus racemosa 2 Picris echioides 3 Dipsacus fullonum 4 Avena barbata 5 Lolium multiflorum 6 7 8 Stratum Indicator Tree FACW 9 Herb FAC 10 Herb FACW-11 Herb UPL 12 Herb FAC* 13 14 15 16 Date 12-09-03 County San Diego State CA YES [fill Community ID Expansion site wetland frESI NO Transect ID frEsl NO Plot ID SOIL1 Dominant Plant Species Stratum Indicator I I Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 60% Remarks I Point taken at base of sycamore tree at SW end of drainage swale. I I I I HYDROLOGY 0 Recorded Data (Describe in Remarks) D Stream, Lake, or Tide Gauge 0 Aerial Photographs D Other D No Recorded Data Available I FIELD OBSERVATIONS 1 Depth of Surface Water Depth to Free Water in Pit 0 (in) 18+ (in) 11>-----------+-----------i Depth to Saturated Soil 18+(in) I WETLAND HYDROLOGY INDICATORS Primary Indicators: D Inundated D Saturated in Upper 12 Inches D Water Marks D Drift Lines D Sediment Deposits D Drainage Patterns in Wetlands Secondary Indicators (2 or more Required): D Oxidized Root Channels in Upper 12 Inches D Water-Stained Leaves D Local Soil Survey Data 0 F AC-Neutral Test D Other (Explain in Remarks) SOILS Map Unit Name (Series and Phase): Las Flores Loamy Fine Sand Drainage Class: MWD Taxonomy (Subgroup) 5 to 9 percent, eroded Field Observations Confirm Mapped Type? YES HQ! PROFILE DESCRIPTION Depth Horizon Matrix Color Mottle Colors Mottle Texture, Concretions, {inches) (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc. 3 B? 2.5 YR4/4 None None Sandy clay loam 6 B? 2.5YR4/4 None N/a Sandy clay loam 12 B? 10YR 4/4 None None Sandy clay loam HYDRIC SOIL INDICATORS: D Histosol D Concretions D Histic Epipedon D High Organic Content in Surface Layer in Sandy Soils □ Sulfidic Odor D Organic Streaking in Sandy Soils D Aquic Moisture Regime D Listed on Local Hydric Soils List D Reducing Conditions D Listed on National Hydric Soils List D Gleyed or Low-Chroma Colors D Other (Explain in Remarks) Remarks: Looks like fine compacted fill soil. Coarse fragments of what appears to be gravel. Rust colored specks-probably from rust/spider mites on tree. Mapped soil type has 14 inches of loamy fine sand-missing here. Top layers in this profile consistent with 14-22 inch description from mapped type. WETLAND DETERMINATION Hydrophytic Vegetation Present? IYESI NO Wetland Hydrology Present? YES HQ! Is this Sampling Point Within a Wetland? YES HQ! ---------------+--------I Hydric Soils Present? YES !NOi Remarks This is just outside the SW end of the drainage swale, under a sycamore tree. Soils appear to be moving towards hydric soils, but are clearly disturbed and probably fill. Entire drainage swale is artificially irrigated from storm runoff from transfer station and would likely revert to upland if the irrigation ceased. I I I I I I I I I I I I I I I I: I: Ii DATA FORM-ROUTINE WETLAND DETERMINATION Page2 I IATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) I I I Project/Site: Palomar Transfer Station Applicant/ Owner Allied Waste Investigators: Gary Halsey and Julia Dumars Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? (If needed, explain on reverse) l,EGETATION I Dominant Plant Species Stratum Indicator 1 Plantanus racemosa Tree FACW 9 2 Picris echioides Herb FAC 10 I 3 Dipsacus fullonum Herb FACW-11 4 Avena barbata Herb UPL 12 I 5 Lolium multiflorum Herb FAC* 13 6 14 7 15 8 16 Date 12-09-03 County San Diego State CA YES [@ Community ID Expansion site IYESI NO Transect ID IYESI NO Plot ID SOIL2 Dominant Plant Species Stratum Indicator I I Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 70% Remarks I I I I I Point taken at base of sycamore tree at SW end of drainage swale, NE of SOIL 1. HYDROLOGY @Recorded Data (Describe in Remarks) D Stream, Lake, or Tide Gauge @ Aerial Photographs @ Other D No Recorded Data Available I 1f--______ F_1E_L_D_o_s_s_E_R_Vr--A_T_1o_N_s _____ ----1 1 Depth of Surface Water 0 (in) 18+ (in) Depth to Free Water in Pit llf---------+--------; Depth to Saturated Soil 18+ (in) I WETLAND HYDROLOGY INDICATORS Primary Indicators: D Inundated D Saturated in Upper 12 Inches D Water Marks D Drift Lines D Sediment Deposits D Drainage Patterns in Wetlands Secondary Indicators (2 or more Required): D Oxidized Root Channels in Upper 12 Inches D Water-Stained Leaves D Local Soil Survey Data D F AC-Neutral Test D Other (Explain in Remarks) SOILS Map Unit Name (Series and Phase): Las Flores Loamy Fine Sand • Drainage Class: MWD Taxonomy (Subgroup) 5 to 9 percent, eroded Field Observations Confirm Mapped Type? YES 00 PROFILE DESCRIPTION Depth Horizon Matrix Color Mottle Colors Mottle Texture, Concretions, (inches) (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc. 0-3 0/A? (fill) 10YR 3/3 None None Organic loam 6 A?-fill 10YR 3/4 7.5YR5/8 Few Fine sandy clay 12 A 10YR 3/3 None None Fine sandy clay HYDRIC SOIL INDICATORS: D Histosol D Concretions D Histic Epipedon D High Organic Content in Surface Layer in Sandy Soils □ Sulfidic Odor D Organic Streaking in Sandy Soils D Aquic Moisture Regime D Listed on Local Hydric Soils List D Reducing Conditions D Listed on National Hydric Soils List D Gleyed or Low-Chroma Colors D Other (Explain in Remarks) Remarks: Soils and hydrology are problematic. Soil is darker than soil at pit SOIL 1. Disturbed graded soil, some evidence of hydric soil forming due to increased OM, clay, dark surface horizon, some mottling. Mapped soil type has 14 inches of loamy fine sand-missing here. Top layers in this profile consistent with 14-22 inch description from mapped type. Surface layer is covered in leaves-not quickly decaying. Mottles are borderline low chroma in the 3-6" layer. May pond 5-14 days. WETLAND DETERMINATION Hydrophytic Vegetation Present? IYESI NO Wetland Hydrology Present? YES till] Is this Sampling Point Within a Wetland? YES @ Hydric Soils Present? YES [&Q] Remarks This is just outside the SW end of the drainage swale, under a sycamore tree. Soils appear to be moving towards hydric soils, but are clearly disturbed and probably fill. Soils and hydrology are problematic. Entire drainage swale is artificially irrigated from storm runoff from transfer station and would likely revert to upland if the irrigation ceased. I I I I I I I I I I I I I I I I DATA FORM -ROUTINE WETLAND DETERMINATION Page2I IATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) I I I Project/Site: Palomar Transfer Station Applicant/ Owner Allied Waste Investigators: Gary Halsey and Julia Dumars Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? (If needed, explain on reverse) YES [YES! [YES! Date 12-09-03 County San Diego State CA [ill Community ID Expansion site NO Transect ID NO Plot ID SOIL3 l,EGETATION I I I I I I I I I I Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1 Juncus dubius Herb FACW* 9 2 Cyperus eragrostis Herb FACW 10 3 Dipsacus fullonum Herb FACW-11 4 Rumex crispus Herb FACW-12 Cortaderia jubata Shrub NI 5 Lolium multiflorum Herb FAC* 13 Aizoaceae g.s. (landscaping) Ground NI 6Picris echioides Herb FAC 14 Lactuca serriola Herb NI 7 15 8 16 Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 95% Remarks Point taken in front of pampas grass stand. Disturbed, problematic site. HYDROLOGY 0 Recorded Data (Describe in Remarks) D Stream, Lake, or Tide Gauge WETLAND HYDROLOGY INDICATORS 0 Aerial Photographs D Other D No Recorded Data Available Primary Indicators: 0 Inundated (117/04 see Figure 7) 0 Saturated in Upper 12 Inches ... ? 0 Water Marks (weak) 0 Drift Lines ( weak) I FIELD OBSERVATIONS 11--------.---- 0 Sediment Deposits( weak) D Drainage Patterns in Wetlands I Depth of Surface Water Depth to Free Water in Pit I Depth to Saturated Soil I O (in) 18+ (in) 18+ (in) Secondary Indicators (2 or more Required): D Oxidized Root Channels in Upper 12 Inches 0 Water-Stained Leaves D Local Soil Survey Data □ F AC-Neutral Test D Other (Explain in Remarks) SOILS Map Unit Name (Series and Phase): Las Flores Loamy Fine Sand Drainage Class: MWD Taxonomy (Subgroup): 5 to 9 percent, eroded Field Observations Confirm Mapped Type? YES I@ PROFILE DESCRIPTION Depth Horizon Matrix Color Mottle Colors Mottle Texture, Concretions, (inches) (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc. 0-3 B 10YR 3/2 7 .5 YR 5/8 and 5/6 Common-prominent Fine sandy clay 6 B 10YR 4/2 10yR 7/1 None Fine sandy clay 12 B 10YR 5/5 None None Loamy fine sand HYDRIC SOIL INDICATORS: D Histosol D Concretions D i-listic Epipedon 0 High Organic Content in Surface Layer in Sandy Soils D Sulfidic Odor D Organic Streaking in Sandy Soils D Aquic Moisture Regime D Listed on Local Hydric Soils List D Reducing Conditions D Listed on National Hydric Soils List @ Gleyed or Low-Chroma Colors (few, weak) D Other (Explain in Remarks) Remarks: Soils and hydrology are problematic. Water stained leaves, .increased soil moisture, and subsequent inundation of the depressed central area on 1/7/04 indicate wetland hydrology is present. Hydric soil layer is shallow, perched on sandy layer, very friable. Organic matter on surface layer is not well decomposed. Low chroma colors and slight gleying is very isolated in the 3-6" layer. Mapped soil type has 14 inches of loamy fine sand- missing or misplaced here. Top layers in this profile consistent with 14-22 inch description from mapped type. WETLAND DETERMINATION Hydrophytic Vegetation Present? IYES! NO Wetland Hydrology Present? IYESI NO Is this Sampling Point Within a Wetland? ~ NO But not jurisdictional due to isolation, small size Hydric Soils Present? IY§] NO Remarks Isolated, small seasonal herbaceous wetland within a highly disturbed drainage swale that may pond for short periods, up to 14 days or more. Entire drainage swale is artificially irrigated from storm runoff from transfer station and would likely revert to upland if the irrigation ceased. I I I I I I I I I I I I I IATA FORM ROUTINE WETLAND DETERMINATION {1987 COE Wetlands Delineation Manual) I Project/Site: Palomar Transfer Station Date 12-09-03 I Applicant / Owner Allied Waste County San Diego Investigators: Gary Halsey and Julia Dumars State CA Do Normal Circumstances exist on the site? YES [@ Community ID Expansion site I Is the site significantly disturbed (Atypical Situation)? f{ESJ NO Transect ID Is the area a potential Problem Area? (If needed, explain on reverse) fiESI NO Plot ID SOIL4 (,EGETATION I I I I I I I I I I Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1 Juncus dubius Herb FACW* 9 2 Cyperus eragrostis Herb FACW 1 O Cortaderia jubata Herb UPL 3 Dipsacus fullonum Herb FACW-11 Lactuca serrio/a Herb UPL 4 Picris echioides Herb FAC 12 5 T amarix parviflora Herb FAC 13 6 Sa/ix /asiolepis Tree FACW 14 7 15 8 16 Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-): 71% Remarks Point taken in NE of pampas grass stand. Nutsedge present. Geranium(?) also present-large shrub with purple lobed flowers{landscaped?) Wetland vegetation present. Distinct drainage soil. Moist soil. May be saturated for brief periods after heavy rains. Slope 0-2% HYDROLOGY @ Recorded Data (Describe in Remarks) D Stream, Lake, or Tide Gauge 0 Aerial Photographs D Other D No Recorded Data Available WETLAND HYDROLOGY INDICATORS Primary Indicators: 0 Inundated (on 1/7/04) 0 Saturated in Upper 12 Inches 0 Water Marks (weak) 0 Drift Lines ( weak) I FIELD OBSERVATIONS 11--------~-- 0 Sediment Deposits (weak) D Drainage Patterns in Wetlands I Depth of Surface Water Depth to Free Water in Pit I Depth to Saturated Soil I 0 (in) 18+ (in) 18+(in) Secondary Indicators (2 or more Required): D Oxidized Root Channels in Upper 12 Inches @ Water-Stained Leaves (some) D Local Soil Survey Data D FAG-Neutral Test D Other (Explain in Remarks) SOILS Map Unit Name (Series and Phase): Las Flores Loamy Fine Sand Drainage Class: MWD Taxonomy (Subgroup): 5 to 9 percent, eroded Field Observations Confirm Mapped Type? YES • [@ PROFILE DESCRIPTION Depth Horizon Matrix Color Mottle Colors Mottle Texture, Concretions, (inches) (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc. 0-3 B 10YR 3/2 7.5 YR 5/8 and 5/6 Common-prominent Fine sandy clay 6 B 10YR4/2 10yR 7/1 None Fine sandy clay 12 B 10YR 5/5 None None Loamy fine sand HYDRIC SOIL INDICATORS: D Histosol D Concretions D Histic Epipedon 0 High Organic Content in Surface Layer in Sandy Soils □ Sulfidic Odor D Organic Streaking in Sandy Soils D Aquic Moisture Regime D Listed on Local Hydric Soils List D Reducing Conditions D Listed on National Hydric Soils List @ Gleyed or Low-Chroma Colors D Other (Explain in Remarks) Remarks: Hydric soil layer is shallow, perched on sandy layer, very friable. Organic matter on surface layer is not well decomposed. Low chroma colors and slight gleying is very isolated in the 3-6" layer. Mapped soil type has 14 inches of loamy fine sand- missing or misplaced here. Top layers in this profile consistent with 14-22 inch description from mapped type. Chunks of concrete present. Probable fill site. WETLAND DETERMINATION Hydrophytic Vegetation Present? !YESI NO Wetland Hydrology Present? !YESI NO Is this Sampling Point Within a Wetland? !Yill NO But not jurisdictional Hydric Soils Present? !YESI NO Remarks Isolated, small seasonal herbaceous wetland within a highly disturbed drainage swale that may pond for short periods, up to 14 days or more. Soils appear to be altered-probably filled/dumped. Entire drainage swale is artificially irrigated from storm runoff from transfer station and would likely revert to upland if the irrigation ceased. DATA FORM -ROUTINE WETLAND DETERMINATION I I I I I I I I I I I I I IATAFORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) I I I Project/Site: Palomar Transfer Station Applicant / Owner Allied Waste Investigators: Gary Halsey and Julia Dumars Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? (If needed, explain on reverse) YES [ill [YES! NO [YEsl NO Date 12-09-03 County San Diego State CA Community ID Expansion site Transect ID Plot ID SOILS lvEGETATION I I I I I I I I I I Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1 Juncus dubius Herb FACW* 9 2 Picris echioides Herb FAC 10 Lolium mu/tiflorum Herb FAC* 3 Rumex crispus Herb FACW-11 Foeniculum vu/gare Herb FACU- 4 12 5 13 6 14 7 15 8 16 Percent of Dominant Species that are OBL, FACW, or FAC (excluding FAC-) 95% Remarks Point taken at NE end of distinct drainage swale, north of eucalyptus tree that marks boundary. Disturbed, problematic site. Wetland vegetation present. Not saturated 12/9/03, but near field capacity, may be saturated after heavy rains 7-14 days. Slope is 0-2%. Flooding probably occurs once or twice each year. May pond shallowly and briefly. HYDROLOGY 0 Recorded Data (Describe in Remarks) D Stream, Lake, or Tide Gauge 0 Aerial Photographs D Other D No Recorded Data Available WETLAND HYDROLOGY INDICATORS Primary Indicators: D Inundated D Saturated in Upper 12 Inches D Water Marks D Drift Lines D Sediment Deposits I FIELD OBSERVATIONS 11-------------.---- D Drainage Patterns in Wetlands 1 Depth of Surface Water 0 (in) 18+ (in) Depth to Free Water in Pit 1,1---------- Depth to Saturated Soil 18+(in) Secondary Indicators (2 or more Required): D Oxidized Root Channels in Upper 12 Inches 0 Water-Stained Leaves (some) D Local Soil Survey Data D FAG-Neutral Test D Other (Explain in Remarks) 1~======h===~=====' SOILS I Map Unit Name (Series and Phase): Las Flores Loamy Fine Sand Drainage Class: MWD Taxonomy (Subgroup): 5 to 9 percent, eroded Field Observations Confirm Mapped Type? YES till I PROFILE DESCRIPTION Depth Horizon Matrix Color Mottle Colors Mottle Texture, Concretions, I (inches} (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc. I 0-3 B 10YR 3/2 None NA Organic fine sandy clay loam I 6 B 10YR 4/3 None NA Fine sandy clay 12 B 10YR 4/4 None NA Fine silty clay I I HYDRIC SOIL INDICATORS: I D Histosol D Concretions D Histic Epipedon 0 High Organic Content in Surface Layer in Sandy Soils I D Sulfidic Odor D Organic Streaking in Sandy Soils D Aquic Moisture Regime D Listed on Local Hydric Soils List D Reducing Conditions D Listed on National Hydric Soils List I @ Gleyed or Low-Chroma Colors D Other (Explain in Remarks) Remarks: I Disturbed/graded site with thin layer of low chroma, minor gleying and concretions at depth. Increased clay content. $oils I may pond for short periods. Hydric soil layer is shallow, perched on sandy layer, very friable. Organic matter on surface layer is not well decomposed. Low chroma colors and slight gleying is very isolated in the 3-6" layer. Mapped soil type has 14 inches of loamy fine sand-missing or misplaced here. Top layers in this profile consistent with 14-22 inch description from mapped type. I I WETLAND DETERMINATION Hydrophytic Vegetation Present? !YESI NO 1: Wetland Hydrology Present? YES ~ Is this Sampling Point Within a Wetland? YES ~ Hydric Soils Present? !YESI NO I, Remarks This is within a highly disturbed drainage swale that may pond for short periods, up to 14 days. 1· I. I DATA FORM -ROUTINE WETLAND DETERMINATION Page2li I I I I I I I I I I I I I I I I I I I Palomar Transfer Station Wetland Delineation Plant List I I I I I I I I I I 1-- 1 I I I I I I I Family AIZOACEAE APIACEAE ASTERACEAE ASTERACEAE ASTERACEAE CHENOPODIACEAE CYPERACEAE DIPSACACEAE JUNCACEAE PLATANACEAE POACEAE POACEAE POACEAE POACEAE POLYGONACEAE POLYGONACEAE SALICACEAE TAMARICACEAE Palomar Transfer Station Wetland Delineation Plant List Scientific Name Common Name Aizoaceae f!.S. Ice Plant Foeniculum vul~are Sweet fennel Arctium laova Greater burdock Lactuca serriola Milk thistle Picris echioides Bristly ox-tongue Atriplex semibaccata Australian saltbush Cyperus erawostis Nut sedge Dipsacus fullonum Fuller's teasel Juncus dubius Dubius rush Plantanus racemosa American sycamore Avena barbata Slender oat Cortaderia _jubata Pampas grass Lolium multiflorum English ryegrass Pennisetum setaceum Fountain grass Erio~onum fasciculatum California buckwheat Rumex crisvus Curly dock Salix lasiolepis var bracelinae Arroyo willow Tamar&; parviflora tamarisk Indicator NI-PAC FACU- UPL UPL PAC FAC FACW FACW- FACW* FACW UPL UPL PAC* NI UPL FACW- FACW FAC