In BWAM/stayCALM: Stay Calm when Applying a Consolidated Assessment Listing Methodology (CALM)

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

Water Quality Standards and Guidance Values

Water quality standards (WQSs) and guidance values (GVs) are narrative or numeric criteria for determining the condition of a waterbody. New York State’s (NYS’s) WQSs and GVs are defined in Title 6 NYCRR, Part 703 and TOGS 1.1.1, respectively. WQSs and GVs are applicable to three water types, fresh surface water, saline surface water, and groundwater, as determined by the relationship among WQSs/GVs, WQS/GV-type, best usages, and waterbody class; this chapter will elucidate this relationship as it pertains to numeric-WQSs/GVs used to assess fresh and saline surface waters in NYS.

Waterbody Class

Fresh and saline surface water classes generally conform to a descending alphabetical hierarchy (Figure \@ref(fig:wqs-general)). Class D represents the most upstream class of the fresh surface waters, while the various A-classes represent the most downstream classes (Figure \@ref(fig:wqs-general)A). Similar to the fresh surface water classes, class SD represents the most upstream class of the saline surface waters, while class SA represents the most downstream class (Figure \@ref(fig:wqs-general)B). Class I, within saline surface waters, is downstream of class SC and upstream of class SB, which creates a discrepancy in the descending alphabetical hierarchy of saline surface water classes.

knitr::include_graphics('images/wqs_logic/wqs-logic_general_v3.png',
                        dpi = 300)

WQSs and GVs assigned to upstream classes are inherited by all downstream classes. The most upstream class associated with a WQS or GV will be referred to as the "root" class for a given standard. For example, WQSs and GVs with root D or SD classes will be applicable to all downstream fresh surface water classes (i.e., C, B, A-classes, and their associated Trout (T) and Trout Spawning (TS) variants) and saline surface water classes (i.e., I, SC, SB, and SA), respectively. D and SD represent the most upstream classes in fresh and saline surface waters, respectively, and therefore influence all other classes. However, D and SD classes do not always represent the root class; the root is determined by the designated type of a WQS or GV and best usage supported.

Designated Best Uses and Standard Types

Waterbodies in NYS are assigned designated best use(s) determined by the waterbody class:

• Fishing
• Secondary Contact Recreation
• Primary Contact Recreation
• Source Water Supply
• Shellfishing)

Fishing, Primary Contact Recreation, and Secoundary Contact Recreation uses are applicable to fresh and saline surface waters, while the Source Water Supply and Shellfishing uses are only applicable to fresh and saline surface waters, respectively. Figure \@ref(fig:wqs-general-use) overlays the class hierarchy depicted in Figure \@ref(fig:wqs-general) on the designated best uses the classes support. For example, all fresh surface water class support the Fishing use, while only class A waters (A, A-Special, AA, and AA-Special) support the Source Water Supply use (Figure \@ref(fig:wqs-general-use)A). Furthermore, class A waters support all fresh surface water uses (i.e., Fishing, Secondary Contact Recreation, Primary Contact Recreation, Source Water Supply), while classes C and D only support the fresh surface water Fishing use. To determine the best use supported by a WQS or GV, the WQS- or GV-type must be used as a cross-walk.

knitr::include_graphics('images/wqs_logic/wqs-logic_general-uses_v3.png',
                        dpi = 300)

Title 6 NYCRR, Part 702 defines eight WQS/GV-types that provide a link between a WQS or GV and the best use the standard supports (Table \@ref(tab:use-type-table), Figure \@ref(fig:wqs-general-use)). WQS/GV-types are measurements that are representatitive of a specific aspect of a best usage. For example, Aesthetic (Water Source) standards assess aspects of a source water supply that would be offputting but not harmful (i.e., taste, odor, and discoloration), while Health (Water Source) standards assess the presence of substances harmful to human health in a source water supply. Both types support the source water supply use but represent different components necessary for protecting the use.

use.df <- data.frame(
  'Best Use' = c(rep("Fishing", 5),
          "Secondary Contact Recreation",
          "Primary Contact Recreation",
          rep("Source Water Supply", 2),
          "Shellfishing"),
  Type = c(
           "Aquatic (Acute)",
           "Aquatic (Chronic)",
           "Health (Fish Consumption)",
           "Wildlife",
           "Aesthetic (Food Source)",
           "Recreation",
           "Recreation",
           "Health (Water Source)",
           "Aesthetic (Water Source)",
           "Not Applicable"),
  Source = c(
    "Title 6 NYCRR, Part 702.9",
    "Title 6 NYCRR, Part 702.9",
    "Title 6 NYCRR, Part 702.8",
    "Title 6 NYCRR, Part 702.13",
    "Title 6 NYCRR, Part 702.14",
    "Title 6 NYCRR, Part 702.12",
    "Title 6 NYCRR, Part 702.12",
    "Title 6 NYCRR, Part 702.2",
    "Title 6 NYCRR, Part 702.14",
    "Title 6 NYCRR, Part 47"
  )
)
knitr::kable(use.df,
              caption = "The relationship between the best usage and the standard-type.")
  # flextable::flextable() %>% 
  # flextable::autofit() %>% 
  # flextable::merge_v(j = c("Use")) %>% 
  # flextable::color(~Type == "Not Applicable", color = "darkgray", j = "Type") %>% 
  # flextable::italic(i = ~Type == "Not Applicable", j = "Type") %>% 
  # flextable::theme_zebra() %>% 
  # flextable::set_caption("Testing")

In practice, the types specified in the WQS or GV documents in Title 6 NYCRR, Part 703 and TOGS 1.1.1 must be utilized to cross-walk the WQSs and GVs in these tables to the best use(s) supported. When multiple WQS-types are listed for a single parameter, Title 6 NYCRR, Part 703.5 specifies that the most stringent standard will be applied. For example, in Title 6 NYCRR, Part 703.5 the WQSs for dissolved mercury differ between four fishing types types: 1) Health (Fish Consumption), 2) Aquatic (Chronic), 3) Aquatic (Acute), and 4) Wildlife. Therefore, there are four standards for assessing the fishing use (i.e., Health (Fish Consumption), Aquatic (Chronic), Aquatic (Acute), and Wildlife types). For all fresh and saline surface water classes the Health (Fish Consumption) standard is the most stringent, superceding the remaining types. WQS/GV-types provide a link between most WQSs/GVs and the use supported, but not all standards are assigned a type.

Many of the WQSs defined outside of Title 6 NYCRR, Part 703.5 do not have defined WQS/GV-types, and therefore support all designated best uses associated with a given class. For example, the dissolved oxygen (DO) WQS defined in Title 6 NYCRR, Part 703.3 has no defined type for fresh surface water classes. If DO is used to assess a class C waterbody, the assessment will only support the Fishing use. While, if DO is used to assess a class A waterbody, the assessment will support Fishing, Secondary Contact Recreation, Primary Contact Recreation, and Source Water Supply uses. The generic application of WQSs or GVs to best usages when types are absent provides no direct relationship between the standard and the best usage.

Although most WQSs and GVs adhere to the logic represented in Figure \@ref(fig:wqs-general-use), there are multiple discrepancies in Title 6 NYCRR, Part 703 and TOGS 1.1.1.

Discrepancies

The following WQS do not follow the logic depicted in Figure \@ref(fig:wqs-general-use). It is important to specifically document all discrepancies as these instances will require special attention during the development of an automated assessment process.

Class I

In TOGS 1.1.1 Part 1A-Section 3. Water Classes and Type, WQSs for the saline surface water class I are associated with types Health (Consumption of Fish), Aquatic (Chronic), Aquatic (Acute), Wildlife Protection, and Aesthetic-- "Aesthetic" should most likely represent "Aesthetic (Food Source)" to align with the types defined in Title 6 NYCRR, Part 703.5). However, in Table 1 of TOGS 1.1.1 and in Title 6 NYCRR, Part 703.5, class I water's are frequently and inconsistently excluded from the above mentioned types. This creates a class hierarchy that follows the logic in Figure \@ref(fig:wqs-class-i) rather than the logic in Figure \@ref(fig:wqs-general).

knitr::include_graphics('images/wqs_logic/wqs-logic_class-i_v2.png',
                        dpi = 300)

# The following parameters are not applicable to class I waters, which deviates from the logic presented in [TOGS 1.1.1](https://www.dec.ny.gov/docs/water_pdf/togs111.pdf) Part 1A-Section 3:
# 
# 1. Aldrin (309-00-2; Human Fish Consumption)
# 2. Aldrin and Dieldrin (309-00-2; 60-57-1; Human Fish Consumption)
# 3. Arsenic (NA; Aquatic Chronic)
# 4. Boron (NA; Aquatic Chronic)
# 
# 6. Cyanide (NA; Aquatic Chronic)
# 7. Hexavalent Chromium (NA; Aquatic Chronic)
# 8. Demeton (8065-48-3; 298-03-3; 126-75-0; Aquatic Chronic)
# 5. Endosulfan (115-29-7; Aquatic Chronic)
# 6. Endrin (72-20-8; Human Fish Consumption)
# 7. Hexachlorocyclopentadiene (77-47-4)
# 8. Trichlorobenzenes (87-61-6, 120-82-1, 108-70-3, 12002-48-1)
# 9. Azinphosmethyl (86-50-0)
# 10. Demeton (8065-48-3, 298-03-3, 126-75-0)
# 11. Hydrogen sulfide (7783-06-4)
# 12. Malathion (121-75-5)
# 13. Methoxychlor (72-43-5)
# 14. Mirex (2385-85-5)
# 15. Toxaphene (8001-35-2; A(C))
# 
# The following parameters are applicable to class I waters, which is consistent with the logic presented in [TOGS 1.1.1](https://www.dec.ny.gov/docs/water_pdf/togs111.pdf) Part 1A-Section 3:
# 
# 1. Acenaphthene (83-32-9; GV Aquatic Acute; GV Aquatic Chronic)
# 1. Ammonia and Ammonium (7664-41-7)
# 2. Benzene (71-43-2; Human Fish Consumption; GV Aquatic Acute; GV Aquatic Chronic)
# 3. Benzo(a)pyrene (50-32-8; GV Human Fish Consumption)
# 4. Cadmium (NA; Aquatic Chronic; GV Human Fish Consumption)
# 5. Chlordane (57-74-9; Human Fish Consumption)
# 6. Chlorinated dibenzo-p-dioxins and Chlorinated dibenzofurans (NA; Human Fish Consumption; Wildlife)
# 7. Total Residual Chlorine (NA; Aquatic Chronic)
# 8. Chlorobenzene (108-90-7; Aquatic Chronic; Human Fish Consumption)
# 9. Copper (NA; Aquatic Acute; Aquatic Chronic)
# 10. Cyanide (NA; Human Fish Consumption)
# 11. p,p′-DDD (72-54-8; Human Fish Consumption; Wildlife)
# 12. p,p′-DDE (72-55-9; Human Fish Consumption; Wildlife)
# 13. p,p′-DDT (50-29-3; Human Fish Consumption; Wildlife)
# 14. Dieldrin (60-57-1; Human Fish Consumption)
# 15. 2,4-Dimethylphenol (105-67-9; Human fish Consumption)
# 16. 2,4-Dinitrophenol (51-28-5; Human Fish Consumption)
# 17. Ethylbenzene (100-41-4; GV Aquatic Acute, GV Aquatic Chronic)
# 17. Heptachlor (76-44-8)
# 18. Heptachlor expoxide (1024-57-3)
# 19. Hexachlorobenzene (118-74-1)
# 20. Hexachlorobutadiene (87-68-3)
# 21. alpha-Hexachlorocyclohexane (319-84-6)
# 22. beta-Hexachlorocyclohexane (319-85-7)
# 23. delta-Hexachlorocyclohexane (319-86-8)
# 24. epsilon-Hexachlorocyclohexane (6108-10-7)
# 25. gamma-Hexachlorocyclohexane (58-89-9)
# 26. Hexachloroethane (67-72-1)
# 27. Lead (NA)
# 28. Mercury (NA)
# 29. Methylene chloride (75-09-2)
# 30. Nickel (NA)
# 31. Octachlorostyrene (29082-74-4)
# 32. Polychlorinated biphenyls (NA)
# 33. Toluene (108-88-3)
# 34. Toxaphene (8001-35-2)
# 35. Trichloroethene (79-01-6)
# 36. Zinc (NA)
# 37. pH
# 38. total coliforms
# 39. fecal coliforms
# 
# 
# Additionally, the class I WQS for dissolved oxygen is "Shall not be less than 4.0 mg/L at any time", while the acute WQS for classes SD, SC, SB, and SA is "Shall not be less than 3.0 mg/L at any time." This deviates from the general logic presented in (Figure \@ref(fig:wqs-general)B), which places class I in between classes SC and SB in the saline surface water hierarchy.

Aquatic (Acute)

Aquatic (Acute) designates a type of WQS or GV. Title 6 NYCRR, Part 702.9d states: "Where the waters are to be suitable for fish, shellfish and wildlife propagation and survival, both Aquatic (Chronic) and Aquatic (Acute) standards or guidance values shall apply." However, the class hierarchy associated with Aquatic (Acute) WQSs are treated inconsistently in Title 6 NYCRR, Part 703.5 and TOGS 1.1.1. In many instances, the class hierarchy follows the rules depicted in Figure \@ref(fig:wqs-general), but there are multiple instances where Aquatic (Acute) WQSs and GVs are only applicable to fresh and saline surface water classes D and SD, respectively (Figure \@ref(fig:wqs-aa)).

knitr::include_graphics('images/wqs_logic/wqs-logic_aquatic_acute_v2.png',
                        dpi = 300)

Table \@ref(tab:table-acute) is a modified version of the table in Title 6 NYCRR, Part 703.5 subset to only include parameters associated with type Aquatic Acute; Aquatic Chronic types were also retained when they corresponded with an Aquatic Acute standard for a given parameter. In fresh surface waters the Aquatic Acute WQSs for un-ionized ammonia as NH~3~, benzidine, and carbofuran are only applicable to class D waters. While in saline surface waters arsenic, cadmium, hexavalent chromium, and cyanide are only applicable to class SD waters. Endosulfan and total residual chlorine were only applicable to classes D and SD within fresh and saline surface waters, respectively. In all instances described, the Aquatic Acute standards are superseded by more stringent Aquatic Chronic standards for all classes downstream in the hierarchy-- except when class I's are missing (see [Class I]). There are also instances in Table \@ref(tab:table-acute) where the entire class hierarchy is specified for the Aquatic Acute type (e.g., fresh surface water arsenic and saline surface water Copper). This creates an odd discrepancy for assessments. For example, the arsenic fresh surface water Aquatic Acute and Aquatic Chronic standards are applicable to classes C, B, A, A-Special, AA, and AA-Special. Conversely, the arsenic saline surface water Aquatic Acute standard is only applicable to class SD waters, while the Aquatic Chronic standard is applicable to classes SC, SB, and SA. Thus, a class A waterbody would be assessed for both Aquatic Acute and Aquatic Chronic standards, while the most downstream saline class, class SA, would only be assessed by the Aquatic Chronic standard.

acute.df <- stayCALM::aquatic_acute 
acute.sub <- subset(acute.df, select = c("parameter",
                                      "cas_no",
                                      "class",
                                      "standard",
                                      "units",
                                      "type",
                                      "remark"))

knitr::kable(acute.sub,
             caption = "All Aquatic (Acute) water quality standards in Title 6 NYCRR, Part 703.5. Aquatic (Chronic) water quality standards were included, if they were present for any of the same parameters that also had an Aquatic (Acute) standard.")

Chlorobenzene

Chlorobenzene (108-90-7)...

Trout and Trout Spawning Waters

Fresh surface water classes C, B, A, A-Special, AA, and AA-Special have variants designating Trout (T) and Trout Spawning (TS) waterbodies (e.g., C(T) and C(TS)). For the majority of parameters, these variants have the same WQS as the non-T/TS waterbody classes (Figure \@ref(fig:wqs-general)). Dissolved oxygen and ammonia as NH~3~ WQS differ between non-T/TS, T, and TS waterbody class variants (Figure \@ref(fig:wqs-do-ammonia)); non-T/TS variants have the least stringent standards, while TS variants have the most stringent standards.

knitr::include_graphics('images/wqs_logic/wqs-logic_do-ammonia_v2.png',
                        dpi = 300)

Class A Variants

Most fresh surface water class A variants have the same WQSs or GVs, but there are several instances where not all class A variants have defined standards or the standard deviates from the standard for the rest of the A variants.

Dissolved Solids

The dissolved solids A-Special WQS (200 mg/L) is more stringent than the other A variants (500 mg/L; Title 6 NYCRR, Part 703.3).

Total and Fecal Coliforms

The WQSs for total and fecal coliforms in fresh surface waters follow the logic dictated in Figure \@ref(fig:wqs-general), except there is no total coliform standard applicable to class AA-Special and there are no fecal coliform standards applicable to class AA or AA-Special Title 6 NYCRR, Part 703.4.

Appendix A

Appendix A appends together sections of 6 CRR-NY Parts 701-703 that are most applicable to the application of surface and saline surface water water quality standards (WQSs) and guidance values (GVs). The majority of this appendix represents the exact language, demarcated by the block quotes, from the section referenced. The text from each section may NOT represent all of the text from the section because text was specifically extracted if it was deemed to be absolutely necessary to understand the relationship between WQSs/GVs, classes, types, and best usages.

Part 701 Classifications: Surface Waters and Groundwaters

Fresh Surface Water Classes

Class D

The best usage of Class D waters is fishing. Due to such natural conditions as intermittency of flow, water conditions not conducive to propagation of game fishery, or stream bed conditions, the waters will not support fish propagation. These waters shall be suitable for fish, shellfish and wildlife survival. The water quality shall be suitable for primary and secondary contact recreation, although other factors may limit the use for these purposes. – 6 CRR-NY 701.9

Class C

The best usage of Class C waters is fishing. These waters shall be suitable for fish, shellfish and wildlife propagation and survival. The water quality shall be suitable for primary and secondary contact recreation, although other factors may limit the use for these purposes. - 6 CRR-NY 701.8

Class B

The best usages of Class B waters are primary and secondary contact recreation and fishing. These waters shall be suitable for fish, shellfish and wildlife propagation and survival. - 6 CRR-NY 701.7

Class A

(a) The best usages of Class A waters are: a source of water supply for drinking, culinary or food processing purposes; primary and secondary contact recreation; and fishing. The waters shall be suitable for fish, shellfish and wildlife propagation and survival. - 6 CRR-NY 701.6

Class A-Special

(a) The best usages of Class A-S waters are: a source of water supply for drinking, culinary or food processing purposes; primary and secondary contact recreation; and fishing. The waters shall be suitable for fish, shellfish and wildlife propagation and survival. - 6 CRR-NY 701.4

Class AA

(a) The best usages of Class AA waters are: a source of water supply for drinking, culinary or food processing purposes; primary and secondary contact recreation; and fishing. The waters shall be suitable for fish, shellfish and wildlife propagation and survival. - 6 CRR-NY 701.5

Class AA-Special

(a) The best usages of Class AA-S waters are: a source of water supply for drinking, culinary or food processing purposes; primary and secondary contact recreation; and fishing. The waters shall be suitable for fish, shellfish and wildlife propagation and survival. - 6 CRR-NY 701.3

Class N

~~(a) The best usages of Class N waters are the enjoyment of water in its natural condition and, where compatible, as a source of water for drinking or culinary purposes, bathing, fishing, fish propagation, and recreation. The waters shall be suitable for shellfish and wildlife propagation and survival and fish survival.~~ - 6 CRR-NY 701.2

Saline Surface Water Classes

Class SD

The best usage of Class SD waters is fishing. These waters shall be suitable for fish, shellfish and wildlife survival. In addition, the water quality shall be suitable for primary and secondary contact recreation, although other factors may limit the use for these purposes. This classification may be given to those waters that, because of natural or man-made conditions, cannot meet the requirements for fish propagation. - 6 CRR-NY 701.14

Class SC

The best usage of Class SC waters is fishing. These waters shall be suitable for fish, shellfish and wildlife propagation and survival. The water quality shall be suitable for primary and secondary contact recreation, although other factors may limit the use for these purposes. - 6 CRR-NY 701.12

Class I

The best usages of Class I waters are secondary contact recreation and fishing. These waters shall be suitable for fish, shellfish, and wildlife propagation and survival. In addition, the water quality shall be suitable for primary contact recreation, although other factors may limit the use for this purpose. - 6 CRR-NY 701.13

Class SB

The best usages of Class SB waters are primary and secondary contact recreation and fishing. These waters shall be suitable for fish, shellfish and wildlife propagation and survival. - 6 CRR-NY 701.11

Class SA

The best usages of Class SA waters are shellfishing for market purposes, primary and secondary contact recreation and fishing. These waters shall be suitable for fish, shellfish and wildlife propagation and survival. - 6 CRR-NY 701.10

Part 702 Derivation and Use of Standards and Guidance Values

702.1 Basis for derivation of water quality standards and guidance values

(a) The control of taste-, color- and odor-producing, toxic and other deleterious substances is implemented through the use of standards and guidance values. Standards and guidance values for such substances shall be derived according to the procedures set forth in this Part. (b) The derivation of standards and guidance values will consider, to the extent possible, variations in natural or background conditions of waters, including but not limited to alkalinity, temperature, hardness and pH. (c) Standards and guidance values shall be of the following Types to protect the best usages of the waters as described in Part 701 of this Title: (1) Health (Water Source) or H(WS); (2) Health (Fish Consumption) or H(FC); (3) Aquatic (Chronic) or A(C); (4) Aquatic (Acute) or A(A); (5) Wildlife or W; (6) Aesthetic (Water Source) or E(WS); (7) Aesthetic (Food Source) or E(FS); and (8) Recreation or R. - 6 CRR-NY 702.1

702.2 Standards and guidance values for protection of human health and sources of potable water supplies

(a) Standards and guidance values for protection of the best usage as a source of potable water supply shall protect human health and drinking water sources and are referred to as Health (Water Source) values. - 6 CRR-NY 702.2

702.8 Procedures for deriving standards and guidance values for protection of human health from consumption of fish

Standards and guidance values for the protection of the best usage of fishing shall protect the health of human consumers of fish and, for Class SA waters, human consumers of shellfish from chemicals that may bioaccumulate and are referred to as Health (Fish Consumption) values. - 6 CRR-NY 702.8

702.9 Standards and guidance values for protection of aquatic life

(a) Protection of the best usage of fishing shall include standards and guidance values for the protection of aquatic life. (b) Standards and guidance values for the protection of propagation of aquatic life are referred to as Aquatic (Chronic) values. (c) Standards and guidance values for the protection of survival of aquatic life are referred to as Aquatic (Acute) values. (d) Where the waters are to be suitable for fish, shellfish and wildlife propagation and survival, both Aquatic (Chronic) and Aquatic (Acute) standards or guidance values shall apply. (e) Where the waters are to be suitable for fish, shellfish and wildlife survival, Aquatic (Acute) standards and guidance values shall apply.

702.12 Procedures for deriving standards and guidance values for protection of recreation

(a) Protection of the best usage of recreation shall include standards and guidance values to protect the quality of the water for primary and secondary contact recreation, including aesthetic conditions. Such values are referred to as recreation values and derived based on an evaluation of reported levels of the pollutant (such as pathogens or pathogen indicators, nutrients or vegetation) that affect the quality of the water and its suitability for primary and secondary contact recreation. - 6 CRR-NY 702.12

702.13 Procedures for deriving standards and guidance values for protection of wildlife

(a) Protection of the best usage of fishing shall include standards and guidance values for protection of the health of wildlife consumers of aquatic life and water. Such values are referred to as Wildlife values. - 6 CRR-NY 702.13

702.14 Procedures for deriving standards and guidance values for protection of aesthetic quality

(a) Protection of the best usage as a source of potable water supply shall include standards and guidance values to protect the aesthetic quality of the water, including but not limited to taste, odor, and discoloration, both as a source of potable water and for other human uses such as clothes washing and showering. Such values are referred to as Aesthetic (Water Source) values and shall be derived based on an evaluation of reported levels of the substance that affect the aesthetic quality of the water. Values derived shall not exceed the value of a Specific MCL that is based on aesthetic considerations. (b) Protection of the best usage of fishing shall include standards and guidance values to prevent tainting of aquatic food, including but not limited to taste, odor, and discoloration. Such values are referred to as Aesthetic (Food Source) values and derived based on an evaluation of reported levels of the substance that affect the aesthetic quality of the fish flesh, aquatic life, wildlife, or livestock that are consumed by humans and that acquire such flavor, odor, or color because of habitation in, passage through, or ingestion of waters. - 6 CRR-NY 702.14

702.15 Derivation of guidance values

(a) For those substances that do not have an applicable Health (Water Source) standard in section 703.5 of this Title and that the department determines may pose a threat to human health if discharged to the waters of the State, a guidance value may be derived and shall be the most stringent of the following: (1) the values derived by applying the procedures from sections 702.3 through 702.7 of this Part; (2) a “general organic guidance value” of 50 ug/L for an individual organic substance. This paragraph does not apply if adequate and sufficient data are available to justify values greater than 50 ug/L using procedures from both sections 702.4 and 702.5 of this Part. The general organic guidance value applies only to those substances specified by the department; or (3) a "specific organic mixture guidance value" of 100 ug/L for a commercially available mixture of individual organic substances. This paragraph does not apply if adequate and sufficient data are available to justify values greater than 100 ug/L using procedures from both sections 702.4 and 702.5 of this Part. The derivation of this value for any specified mixture does not preclude the existence or derivation of a Health (Water Source) standard or guidance value for any individual organic substance in the mixture. The specific organic mixture guidance value applies only to those mixtures specified by the department. (b) For those substances that do not have an applicable Health (Fish Consumption) standard in section 703.5 of this Title and that the department determines may pose a threat to human health if discharged to the waters of the State, a guidance value may be derived by applying the procedures from section 702.8 of this Part. (c) (1) For those substances that do not have an applicable Aquatic (Chronic) standard in section 703.5 of this Title and that the department determines may pose a threat to aquatic life or the environment if discharged to the waters of the State, a guidance value may be derived by applying the appropriate procedure from section 702.9 of this Part. (2) For those substances that have an identified applicable Aquatic (Chronic) standard in section 703.5 of this Title, a guidance value shall be substituted where the procedures in section 702.9 of this Part yield a more stringent value. Remarks in Table 1 of section 703.5(f) of this Title identify the standards to which this paragraph applies. This paragraph applies only to the waters of the Great Lakes System. (d) (1) For those substances that do not have an applicable Aquatic (Acute) standard in section 703.5 of this Title and that the department determines may pose a threat to aquatic life or the environment if discharged to the waters of the State, a guidance value may be derived by applying the appropriate procedure from section 702.9 of this Part. (2) For those substances that have an identified applicable Aquatic (Acute) standard in section 703.5 of this Title, a guidance value shall be substituted where the procedures in section 702.9 of this Part yield a more stringent value. Remarks in Table 1 of section 703.5(f) of this Title identify the standards to which this paragraph applies. This paragraph applies only to the waters of the Great Lakes System. (e) For those substances that do not have an applicable Wildlife standard in section 703.5 of this Title and that the department determines may pose a threat to wildlife if discharged to the waters of the State, a guidance value may be derived by applying the appropriate procedure from section 702.13 of this Part. (f) For those substances that do not have an applicable Aesthetic (Water Source) standard in section 703.5 of this Title and that the department determines may pose a threat to the aesthetic quality of sources of potable water if discharged to the waters of the State, a guidance value may be derived by applying the appropriate procedure from section 702.14 of this Part. (g) For those substances that do not have an applicable Aesthetic (Food Source) standard in section 703.5 of this Title and that the department determines may pose a threat to the aesthetic quality of food for human consumption if discharged to the waters of the State, a guidance value may be derived by applying the appropriate procedure from section 702.14 of this Part. (h) For those parameters that do not have an applicable Recreation standard in section 703.5 of this Title and that the department determines may pose a threat to the quality of the water for recreation if discharged to the waters of the State, a guidance value may be derived by applying the appropriate procedure from section 702.12 of this Part. - 6 CRR-NY 702.15

Part 703 Surface Water and Groundwater Quality Standards and Groundwater Effluent Limitations

703.5 Water quality standards for taste-, color- and odor-producing, toxic and other deleterious substances

(b) Standards are Health (Water Source), Health (Fish Consumption), Aquatic (Chronic), Aquatic (Acute), Wildlife, Aesthetic (Water Source), Aesthetic (Food Source), or Recreation based and are respectively designated as H(WS), H(FC), A(C), A(A), W, E(WS), E(FS), or R in the column headed “Type.” Where more than one Type of standard is listed for a water class, the most stringent applies. - 6 CRR-NY 703.5

BWAM/stayCALM documentation built on May 21, 2020, 3:24 p.m.